61 results on '"Masafumi Nii"'
Search Results
2. Safety and efficacy of levonorgestrel‐releasing intrauterine device in the treatment of atypical endometrial hyperplasia and early endometrial cancer
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Toru Hirata, Eiji Kondo, Shoichi Magawa, Michiko Kubo‐Kaneda, Masafumi Nii, Kenta Yoshida, Tadashi Maezawa, Tsutomu Tabata, and Tomoaki Ikeda
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Adult ,Endometrial Hyperplasia ,Intrauterine Devices, Medicated ,Humans ,Fertility Preservation ,Obstetrics and Gynecology ,Female ,Levonorgestrel ,Endometrial Neoplasms - Abstract
To investigate the recurrence rate, live-birth rate, and treatment outcomes of levonorgestrel-releasing intrauterine device (LNG-IUD) for the management of atypical endometrial hyperplasia (AEH) or Grade-1 endometrial cancer (EC) in patients who desire fertility-sparing treatment and those seeking conservative treatment without fertility preservation.We prospectively enrolled nine patients from a single institution between April 2009 and September 2013 who were followed up for 60 months after LNG-IUD insertion.The median patient age was 35 (range: 29-39) years. The overall recurrence rate was 56% (5/9). The median interval between removal of the LNG-IUD and recurrence was 20.5 (range: 2-30) months. Three of the nine patients had Grade-1 EC, and six had AEH. The response rates to the LNG-IUD in patients with Grade-1 EC and AEH were 66% and 100%, respectively. Four patients (three with AEH, one with Grade-1 EC) experienced recurrence 6 months after MPA treatment and all 4 (100%) had complete response. Eight patients desired fertility preservation, of which 37% (3/8) conceived after receiving fertility treatment and 25% (2/8) had a live birth; the remaining three had previously received MPA for 6 months and had a recurrence; of these, 1 had a live birth.LNG-IUD is effective for the management of AEH and EC in young patients who desire fertility-sparing treatment, including those ineligible for MPA owing to the presence of comorbidities and those with recurrence after MPA treatment (6-month treatment), and patients seeking conservative treatment without fertility preservation.
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- 2022
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3. Comparative study of the usefulness of risk score assessment in the early stages of <scp>COVID</scp> ‐19 affected pregnancies: Omicron variant versus previous variants
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Shoichi Magawa, Masafumi Nii, Shintaro Maki, Naosuke Enomoto, Sho Takakura, Naoko Kusaka, Yuka Maegawa, Kazuhiro Osato, Hiroaki Tanaka, Eiji Kondo, and Tomoaki Ikeda
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Pregnancy ,SARS-CoV-2 ,Risk Factors ,Humans ,COVID-19 ,Obstetrics and Gynecology ,Female ,Pregnancy Complications, Infectious ,Risk Assessment - Abstract
To evaluate the utility of the risk score in assessing the current status and prognosis of COVID-19 in pregnancy.Seventy-seven cases affected before the Omicron variant epidemic and 50 pregnant cases affected by the Omicron variant were included. The risk score consists of maternal background, current condition, and examination findings. We determined the risk score in the early stages of disease onset.There were no significant differences in the maternal or gestational ages between the groups. The risk score was significantly lower in the After-Group patients (those affected during the Omicron epoch), while 14.3% of the Before-Group patients (those affected during the pre-Delta and Delta epochs), experienced a worsening of disease after the visit to the center, whereas none of the After-Group patients did. The Before Group's frequency of risk score items was higher among the two groups for "fever for ≥48 h," "mild pneumonia image," and "blood tests," whereas "disease onset 14 days after the second vaccination" was increased in After Group. The blood test parameters for platelet count, C-reactive protein, and D-dimer levels were not significantly different between the groups.The risk score system appeared superior in detecting deteriorating cases. There were no cases of post-illness deterioration in the After-Group, suggesting that cases of the Omicron variant in pregnancy may have had a less severe course compared to that of previous variants. However, there was no significant difference between the groups in terms of a specific blood test evaluation, suggesting the need for a combined evaluation of cases affected during pregnancy.
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- 2022
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4. Surgical technique for fertility preservation for placenta accreta spectrum without previa: Tourniquet, uterus inversion and placental dissection procedure
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Masafumi Nii, Naosuke Enomoto, Sho Takakura, Shintaro Maki, Hiroaki Tanaka, and Tomoaki Ikeda
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Obstetrics and Gynecology - Published
- 2023
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5. Efficacy of a portable interface pressure sensor for robotic surgery in preventing compartment syndrome
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Eiji Kondo, Michiko Kubo-Kaneda, Kotoko Mori, Kenta Yoshida, Masafumi Nii, Kuniaki Toriyabe, Shintaro Maki, Shoichi Magawa, Kota Okamoto, and Tomoaki Ikeda
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Surgery - Published
- 2023
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6. Peripartum Mid-Ventricular-Type Takotsubo Cardiomyopathy After Cesarean Delivery
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Masashi Tomida, Naoki Fujimoto, Keishi Moriwaki, Masafumi Nii, Masaki Ishida, Kyoko Imanaka-Yoshida, Tomoaki Ikeda, and Kaoru Dohi
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General Medicine ,Cardiology and Cardiovascular Medicine - Published
- 2022
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7. Accurate evaluation of the progress of delivery with Transperineal ultrasound may increase vaginal delivery: a single-center retrospective study
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Naosuke Enomoto, Shintaro Maki, Sho Takakura, Mizuki Yamaguchi, Yuya Tamaishi, Masafumi Nii, Kayo Tanaka, Hiroaki Tanaka, Eiji Kondo, Shinji Katsuragi, and Tomoaki Ikeda
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Although evaluation by digital examination of the cervix is the standard method used worldwide for evaluating the progress of delivery, it has a problem because it is subjective. Transperineal ultrasound (TPU) is used as an adjunct to digital evaluation for accurate assessment of the fetal descent and rotation of the advanced part of the fetus. This study aimed to clarify the impact of the introduction of TPU on perinatal outcomes at Mie university hospital. This retrospective study analyzed single pregnant women who underwent delivery management at our hospital between April 2020 and March 2021. Perinatal outcomes were compared between patients who were used TPU (TPU+ group) and those who were not used TPU (TPU- group). The angle of progression and head direction were measured. The rate of vaginal delivery was significantly increased, and the second stage of labor was significantly prolonged in the TPU+ group. There was a significant difference between termination in the latent phase occurred in 3/8 (38%) cases in the TPU+ group and 20/25 (80%) cases in the TPU- group. The rate of vaginal delivery may be increased by accurate evaluation of the progress of delivery with TPU.
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- 2023
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8. Balloon Trocar Is a Suitable Instrument for Retroperitoneal Para-aortic Lymphadenectomy in Gynecologic Malignant Diseases
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Eiji Kondo, Michiko Kubo-Kaneda, Masafumi Nii, Kenta Yoshida, Kota Okamoto, and Tomoaki Ikeda
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Obstetrics and Gynecology - Published
- 2023
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9. Laparoscopic retroperitoneal para‐aortic lymph node biopsy in advanced cervical cancer with pelvic lymph node metastases: A single‐center prospective study
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Tomoaki Ikeda, Michiko Kaneda, Tsuyoshi Matsumoto, Eiji Kondo, Masafumi Nii, Kenta Yoshida, Shintaro Maki, and Toru Hirata
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medicine.medical_specialty ,Biopsy ,medicine.medical_treatment ,Uterine Cervical Neoplasms ,Standardized uptake value ,Metastasis ,Positron Emission Tomography Computed Tomography ,medicine ,Humans ,Prospective Studies ,Stage (cooking) ,Prospective cohort study ,Lymph node ,Neoplasm Staging ,Retrospective Studies ,Cervical cancer ,medicine.diagnostic_test ,business.industry ,Obstetrics and Gynecology ,medicine.disease ,Radiation therapy ,medicine.anatomical_structure ,Lymphatic Metastasis ,Lymph Node Excision ,Female ,Laparoscopy ,Lymph Nodes ,Radiology ,business - Abstract
Aim Extended-field concurrent chemoradiation therapy (Ex-CCRT) has been widely used for para-aortic lymph node (PAN) metastases confirmed by radiographic assessment without surgical exploration. The objective of this prospective study was to evaluate the clinical value of laparoscopic retroperitoneal PAN biopsy in locally advanced cervical cancer (LACC) with pelvic lymph node (PLN) metastases. Methods From May 2017 to March 2020, stage IIB-IIIB cervical cancer patients who were diagnosed with PLN metastasis using positron emission tomography-computed tomography (PET-CT) with maximum standardized uptake value (SUVmax) ≥2.0 underwent laparoscopic retroperitoneal PAN biopsy. The radiation fields were extended to PAN areas with pathological metastases. Results Fourteen patients were diagnosed with cervical squamous cell carcinoma of the International Federation of Gynecology and Obstetrics (FIGO) stage IIB (n = 7) and IIIB (n = 7). The median operating time was 138 min (range, 104-184 min). The median number of harvested PANs was 19 (range, 6-36). Three patients were positive for PAN metastasis on histological analysis. In this study, the sensitivity and specificity of PET-CT were 66.7% and 90.9%, respectively. Conclusion Our study is characterized by the use of more appropriate eligibility criteria for LACC with PLN metastases. Our results revealed that laparoscopic retroperitoneal PAN biopsy may be a useful approach to determine the radiation field for PANs during standard radiotherapy planning.
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- 2021
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10. Maternal cardiopulmonary resuscitation
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Hiroaki Tanaka, Shigetaka Matsunaga, Marie Furuta, Rie Kato, Shinji Takahashi, Jun Takeda, Masahiro Nakao, Eishin Nakamura, Masafumi Nii, Tomoyuki Yamashita, Yoshihiro Yamahata, Naosuke Enomoto, Makoto Tsuji, Shiniji Baba, Yuki Hosokawa, Takahide Maenaka, and Atsushi Sakurai
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Obstetrics and Gynecology - Abstract
The perinatal resuscitation history in Japan is short, with the earliest efforts in the field of neonatology. In contrast, the standardization and dissemination of maternal resuscitation is lagging. With the establishment of the Maternal Death Reporting Project and the Maternal Death Case Review and Evaluation Committee in 2010, with the aim of reducing maternal deaths, the true situation of maternal deaths came to light. Subsequently, in 2015, the Japan Council for the Dissemination of Maternal Emergency Life Support Systems (J-CIMELS) was established to educate and disseminate simulations in maternal emergency care; training sessions on maternal resuscitation are now conducted in all prefectures. Since the launch of the project and council, the maternal mortality rate in Japan (especially due to obstetric critical hemorrhage) has gradually decreased. This has been probably achieved due to the tireless efforts of medical personnel involved in perinatal care, as well as the various activities conducted so far. However, there are no standardized guidelines for maternal resuscitation yet. Therefore, a committee was set up within the Japan Resuscitation Council to develop a maternal resuscitation protocol, and the Guidelines for Maternal Resuscitation 2020 was created in 2021. These guidelines are expected to make the use of high-quality resuscitation methods more widespread than ever before. This presentation will provide an overview of the Guidelines for Maternal Resuscitation 2020.
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- 2022
11. Laparoscopic Versus Robotic Hysterectomy in Obese Patients With Early-stage Endometrial Cancer: A Single-centre Analysis
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Shintaro Maki, Michiko Kaneda, Masafumi Nii, Tomoaki Ikeda, Ryo Nimura, Kenta Yoshida, and Eiji Kondo
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Adult ,Laparoscopic surgery ,Cancer Research ,medicine.medical_specialty ,medicine.medical_treatment ,Hysterectomy ,Pelvis ,Robotic Surgical Procedures ,Blood loss ,medicine ,Humans ,Robotic surgery ,Obesity ,Stage (cooking) ,Aged ,Retrospective Studies ,business.industry ,Endometrial cancer ,General Medicine ,Length of Stay ,Middle Aged ,medicine.disease ,Endometrial Neoplasms ,Surgery ,Robotic hysterectomy ,Single centre ,Oncology ,Lymph Node Excision ,Female ,Laparoscopy ,business ,Body mass index - Abstract
Background/aim To compare the surgical outcomes of robotic and laparoscopic hysterectomy with or without pelvic lymphadenectomy among obese patients [body mass index (BMI) >30 kg/m2] with early-stage endometrial cancer. Patients and methods We examined 42 obese patients with early-stage endometrial cancer who underwent laparoscopic (LH) or robotic hysterectomy (RH) between April 2014 and April 2020 in our institution. We analysed intraoperative and postoperative data for both procedures. Results Of the 42 women, 22 and 20 patients underwent RH and LH, respectively, with or without pelvic lymphadenectomy. The operation times, harvested lymph nodes, and BMI did not differ between the groups. In the subset of patients who underwent pelvic lymphadenectomy, those in the RH group had shorter hospital stays (p=0.001) and less intraoperative bleeding (p=0.006). Conclusion Obese patients with endometrial cancer who underwent robotic surgery had less blood loss and shorter hospital stays than those who underwent laparoscopic surgery.
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- 2021
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12. Fetal Biometric Assessment and Infant Developmental Prognosis of the Tadalafil Treatment for Fetal Growth Restriction
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Makoto Tsuji, Shintaro Maki, Naosuke Enomoto, Kota Okamoto, Asa Kitamura, Shoichi Magawa, Sho Takakura, Masafumi Nii, Kayo Tanaka, Noriko Yodoya, Hiroaki Tanaka, Hirofumi Sawada, Eiji Kondo, Masahiro Hirayama, and Tomoaki Ikeda
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General Medicine ,tadalafil ,fetal growth restriction ,fetal biometric assessment ,fetal head circumference ,brain-sparing effect - Abstract
Background and Objectives: Tadalafil is expected to treat fetal growth restriction (FGR), a risk factor for stillbirth and neonatal morbidity. This study aimed to evaluate the fetal biometric growth pattern of fetuses with FGR treated with tadalafil by ultrasonographic assessment. Materials and Methods: This was a retrospective study. Fifty fetuses diagnosed with FGR and treated by maternal administration of tadalafil and ten controls who received conventional treatment at Mie University Hospital from 2015 to 2019 were assessed. Fetal biparietal diameter (BPD), head circumference (HC), abdominal circumference (AC), femur length (FL), and estimated fetal weight (EFW) at the start of treatment and at two weeks and four weeks of treatment were mainly assessed by ultrasound examination. The Wilcoxon signed-rank test was used to assess the measures. The Kyoto Scale of Psychological Development (KSPD) was used to assess the developmental prognosis on tadalafil-treated children at 1.5 years of corrected age (CA) and 3 years old. Results: The median gestational age at the start of treatment was 30 and 31 weeks in the tadalafil and control groups, respectively, and the median gestational age at delivery was 37 weeks in both groups. The Z-score of HC was significantly increased at 4 weeks of treatment (p = 0.005), and the umbilical artery resistance index was significantly decreased (p = 0.049), while no significant difference was observed in the control group. The number of cases with an abnormal score of less than 70 on the KSPD test was 19% for P-M, 8% for C-A, 19% for L-S, and 11% for total area at 1.5 years CA. At 3 years old, the respective scores were 16%, 21%, 16%, and 16%. Conclusions: Tadalafil treatment for FGR may maintain fetal HC growth and infants’ neuro-developmental prognosis.
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- 2023
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13. Peripartum Mid-Ventricular-Type Takotsubo Cardiomyopathy After Cesarean Delivery
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Masashi, Tomida, Naoki, Fujimoto, Keishi, Moriwaki, Masafumi, Nii, Masaki, Ishida, Kyoko, Imanaka-Yoshida, Tomoaki, Ikeda, and Kaoru, Dohi
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Adult ,Heart Failure ,Pregnancy ,Takotsubo Cardiomyopathy ,Heart Ventricles ,Peripartum Period ,Humans ,Female ,Cardiomyopathies - Abstract
There are several causes of heart failure during pregnancy and the peripartum period, which include peripartum cardiomyopathy, Takotsubo cardiomyopathy or stress cardiomyopathy, exacerbation of a preexisting cardiomyopathy, and acute myocarditis. It is important to determine the cause of the heart failure as the medical treatment may be different based on the diagnosis. However, it has been sometimes challenging to diagnose the cause because of the limited diagnostic tools, especially in pregnant women. Cardiac MRI can characterize myocardial injury and can be used to track the changes in myocardial tissue. We herein report a 35-year-old woman diagnosed with peripartum mid-ventricular-type Takotsubo cardiomyopathy, who was referred to our hospital due to worsening dyspnea the day after cesarean delivery. On admission, electrocardiography showed sinus tachycardia and poor progression of R waves in the precordial leads. Bedside echocardiography revealed severe hypokinesis in the mid- and apical left ventricle (LV) with a LV ejection fraction of 20%. Cardiac catheterization showed normal coronary arteries, and myocardial biopsy revealed contraction band necrosis. On acute phase (Day 4), cardiac MRI showed prolonged native T1 and T2, and severe hypokinesis and decreased regional longitudinal peak strain in the mid-anterior LV wall. During the 1
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- 2022
14. Tadalafil treatment for fetuses with early-onset growth restriction: a protocol for a multicentre, randomised, placebo-controlled, double-blind phase II trial (TADAFER IIb)
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Shintaro Maki, Hiroaki Tanaka, Sho Takakura, Masafumi Nii, Kayo Tanaka, Toru Ogura, Mayumi Kotera, Yuki Nishimura, Satoshi Tamaru, Takafumi Ushida, Yasuhiro Tanaka, Norihiko Kikuchi, Tadatsugu Kinjo, Hiroshi Kawamura, Mayumi Takano, Koji Nakamura, Sachie Suga, Michi Kasai, Osamu Yasui, Kenji Nagao, Yuka Maegawa, Tomomi Kotani, Masayuki Endo, Ichiro Yasuhi, Shigeru Aoki, Yoichi Aoki, Yoshio Yoshida, Masahiko Nakata, Akihiko Sekizawa, and Tomoaki Ikeda
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Fetal Growth Retardation ,Infant, Newborn ,Gestational Age ,General Medicine ,Tadalafil ,Clinical Trials, Phase II as Topic ,Fetus ,Treatment Outcome ,Double-Blind Method ,Pregnancy ,Humans ,Multicenter Studies as Topic ,Female ,Randomized Controlled Trials as Topic - Abstract
IntroductionTheTADAlafil treatment for Fetuses with early-onset growth Restriction: multicentrer, randomizsed, phase II trial (TADAFER II) study showed the possibility of prolonging the pregnancy period in cases of early-onset fetal growth restriction; however, it was an open-label study. To establish further evidence for the efficacy of tadalafil in this setting, we planned a multicentre, randomised, placebo-controlled, double-blind trial.Methods and analysisThis trial will be conducted in 180 fetuses with fetal growth restriction enrolled from medical centres in Japan; their mothers will be randomised into three groups: arm A, receiving two times per day placebo; arm B, receiving one time per day 20 mg tadalafil and one time per day placebo and arm C, receiving 20 mg two times per day tadalafil. The primary endpoint is the prolongation of gestational age at birth, defined as days from the first day of the protocol-defined treatment to birth. To minimise bias in terms of fetal baseline conditions and timing of delivery, a fetal indication for delivery as in TADAFER II will be established in this trial. The investigator will evaluate fetal baseline conditions at enrolment and decide the timing of delivery based on this indication.Ethics and disseminationThis study has been approved by Mie University Hospital Clinical Research Review Board on 22 July 2019 (S2018-007). Written informed consent will be obtained from all mothers before recruitment. Our findings will be widely disseminated through peer-reviewed publications.Trial registrationjRCTs041190065.
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- 2022
15. Evaluation of the tolerability of monoclonal antibody therapy for pregnant patients with COVID-19
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Shoichi Magawa, Masafumi Nii, Shintaro Maki, Naosuke Enomoto, Sho Takakura, Yuka Maegawa, Kazuhiro Osato, Hiroaki Tanaka, Eiji Kondo, and Tomoaki Ikeda
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Pregnancy ,SARS-CoV-2 ,Infant, Newborn ,Obstetrics and Gynecology ,Antibodies, Monoclonal ,Humans ,Female ,Pregnancy Complications, Infectious ,Antibodies, Monoclonal, Humanized ,COVID-19 Drug Treatment - Abstract
To evaluate the tolerability of casirivimab and imdevimab (CAS/IMB) therapy in pregnant women with COVID-19 in Japan and its impact on the neonate and process of delivery.Eight cases of pregnancy complicated by COVID-19 and requiring hospitalization during the delta variant epidemic were included. Gestational age, initial symptoms, pregnancy complications and outcome, severity of illness, blood test findings at the time of treatment initiation and on days 3-5 after administration, body temperature at administration, and 8, 24, and 48 h post-administration, delivery outcome, and neonatal findings were recorded. Ten pregnant women who required hospitalization at the same time and did not receive CAS/IMB were used as controls.Of the eight cases, seven were mild, and one case was of moderate severity. Body temperature in the CAS/IMB group was significantly higher at 8 h post-administration than that at the time of administration. However, body temperature significantly reduced at 24 and 48 h post-administration in the CAS/IMB group compared with that in the control group. There were no apparent adverse events after CAS/IMB administration.Maternal administration of CAS/IMB was safe. Although it was difficult to evaluate the improvement in disease by blood test findings, the fever improved within 24 h, which suggests rapid improvement in patient condition.
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- 2022
16. Adverse Events Associated With Long-term Treatment of Epithelial Ovarian Cancer With Bevacizumab and Chemotherapy
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YUKA YOKOYAMA, MICHIKO KUBO-KANEDA, KIMI SUNADA, YASUHIRO TEISHIKATA, ASA KITAMURA, KOTA OKAMOTO, KUNIAKI TORIYABE, MASAFUMI NII, KENTA YOSHIDA, EIJI KONDO, and TOMOAKI IKEDA
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Bevacizumab ,Ovarian Neoplasms ,Cancer Research ,Proteinuria ,Oncology ,Antineoplastic Combined Chemotherapy Protocols ,Hypertension ,Humans ,Female ,General Medicine ,Carcinoma, Ovarian Epithelial ,Neoplasm Recurrence, Local ,Retrospective Studies - Abstract
Adverse events associated with long-term bevacizumab administration for ovarian cancer have been poorly documented in Japan. This study aimed to evaluate the adverse events of bevacizumab combined with chemotherapy for treating primary and recurrent epithelial ovarian cancer in Japan.In this single-center retrospective study, we analyzed data of patients with advanced and recurrent epithelial ovarian cancer treated with bevacizumab and chemotherapy between January 2013 and November 2019. Statistical analyses were performed using the Fisher's exact test and Kaplan-Meier method.A total of 46 patients were included and the follow-up time was 30 months. The median duration of bevacizumab treatment was 14 months, and the median total dose of bevacizumab was 247.5 mg/kg. The most common adverse events were hypertension (n=30; 65.2%) and proteinuria (n=24; 49%) in all grades. The onset of hypertension and proteinuria occurred at a median of 2 months and 14 months after treatment initiation in all grades, respectively. Gastrointestinal perforation occurred significantly more frequently in patients with a history of radiation therapy.This study included cases of primary advanced and recurrent epithelial ovarian cancer, and had a longer observation period and reported more adverse events of bevacizumab with chemotherapy than previous reports. The administration of bevacizumab therapy in patients with a history of radiation should be carefully considered due to increased chances of gastrointestinal perforation.
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- 2022
17. Evaluation of placental oxygenation index using blood oxygen level-dependent magnetic resonance imaging (BOLD-MRI) during normal late pregnancy
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Naosuke Enomoto, Tomoaki Ikeda, Eiji Kondo, Shinichi Takase, Masafumi Nii, Ryohei Nakayama, Hajime Sakuma, Hiroaki Tanaka, Shoichi Magawa, and Masaki Ishida
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0301 basic medicine ,medicine.medical_specialty ,Oxygenation index ,Placenta ,chemistry.chemical_element ,Hyperoxia ,Oxygen ,03 medical and health sciences ,0302 clinical medicine ,Pregnancy ,Internal medicine ,medicine ,Humans ,Birth Weight ,030219 obstetrics & reproductive medicine ,Blood-oxygen-level dependent ,medicine.diagnostic_test ,business.industry ,Infant, Newborn ,Obstetrics and Gynecology ,Magnetic resonance imaging ,Oxygenation ,Magnetic Resonance Imaging ,Late pregnancy ,030104 developmental biology ,chemistry ,Oxygen Saturation ,Pediatrics, Perinatology and Child Health ,Cardiology ,Female ,business - Abstract
Noninvasive blood oxygen level-dependent magnetic resonance imaging (BOLD-MRI) has recently been used to evaluate placental oxygenation. However, this method still has unresolved problems, such as long testing times and lack of normal values set. In the present study, we used a shorter protocol in BOLD-MRI and established normal values for placental oxygenation in late pregnancy.We recruited 18 healthy singleton pregnant women (32 weeks of gestation) who had a normal body size before pregnancy and a normal course of pregnancy. They underwent BOLD-MRI with three consecutive 4-min periods of different oxygenation: normoxia (21% OIn all cases, the BOLD signal was elevated by maternal oxygen administration, with the peak resolving within 4 min after the end of oxygen administration. Peak ΔR2* and time to peak ΔR2* during oxygenation were 7.99 ± 2.58, and 458.1 ± 73.9 s, respectively. There was a significant correlation between peak ΔR2* and neonatal birth weight (percentile) (In all cases, the BOLD signal increased with maternal hyperoxia using this protocol. So, 4 min observation following maternal oxygen administration is sufficient for peak ΔR2* evaluation. These reference values set in this study may be one of the indicators of BOLD signal changes in normal pregnancies after 32 weeks of gestation.
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- 2021
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18. The Activities for Energy Saving in Tomioka Mill
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Masafumi Nii
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Waste management ,Mechanical Engineering ,Media Technology ,Environmental science ,Mill ,General Materials Science ,General Chemistry ,Energy (signal processing) - Published
- 2021
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19. Cancer-associated gene analysis of cervical cytology samples and liquid-based cytology significantly improve endometrial cancer diagnosis sensitivity
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Ryo Nimura, Eiji Kondo, Kenta Yoshida, Michiko Kubo‑Kaneda, Masafumi Nii, Makoto Ikeijiri, Maki Nakamura, Hiroshi Imai, Yoshinaga Okugawa, Kaname Nakatani, and Tomoaki Ikeda
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Cancer Research ,Oncology - Abstract
To the best of our knowledge, there are no useful screening methods for early detection of endometrial cancer in asymptomatic individuals. The present study evaluated the usefulness of genetic analysis of liquid-based cytology (LBC) specimens by assessing whether pathological genetic mutations detected in cancer tissue sections were detected in LBC specimens from the cervix and uterus. The primary endpoint was genetic analysis of cervical cytology specimens and LBC for the detection of endometrial cancer. Endometrial thickening (11 mm) assessed using transvaginal ultrasonography was present in 60% of cases and adenocarcinoma assessed using cervical cytology was present in 50% of cases. In 70% of cases, pathogenic mutations detected in cancer tissue sections were also detected in cervical and/or endometrial LBC specimens. The pathogenic variants identified were
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- 2022
20. Benefits of Pelvic and Para-Aortic Lymphadenectomy after Neoadjuvant Chemotherapy for Advanced Epithelial Ovarian Cancer with Enlarged Lymph Nodes
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Tomoaki Ikeda, Kenta Yoshida, Masafumi Nii, Kuniaki Toriyabe, Kota Okamoto, Naosuke Enomoto, Eiji Kondo, and Michiko Kubo-Kaneda
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Reproductive Medicine ,Obstetrics and Gynecology - Published
- 2023
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21. Differences in the prevention and incidence of maternal venous thromboembolism according to the type of institution in Japan in 2018: A sub-analysis of national questionnaire surveillance
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Mamoru, Morikawa, Tomoko, Adachi, Atsuo, Itakura, Masafumi, Nii, Yasushi, Nakabayashi, and Takao, Kobayashi
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Japan ,Pregnancy ,Risk Factors ,Incidence ,Surveys and Questionnaires ,Pregnancy Complications, Cardiovascular ,Obstetrics and Gynecology ,Anticoagulants ,Humans ,Female ,Venous Thromboembolism - Abstract
To clarify the relation between institutions capacity to manage venous thromboembolism (VTE) and its incidence in pregnant women throughout Japan.Among the 2299 institutions that received the surveillance questionnaire, 666 (29.0%) responded, after which data from 295 961 women who gave birth at those institutions in 2018 were analyzed. Incidences and characteristics of antepartum and postpartum VTE in perinatal medical centers (PMCs), general hospital with obstetric facilities (GHs), and maternal clinic with beds (MCs) were then determined.The frequencies at which routine antepartum and postpartum thromboprophylaxis for high-risk women and routine transport to the more advanced medical institutions upon antepartum and postpartum pulmonary thromboembolism (PE) onset were performed differed significantly according to types of institution (PMCs: 92.4%, 96.2%, 23.8%, and 21.2%; GHs: 76.5%, 80.6%, 58.8%, and 54.1%; MCs: 29.2%, 41.7%, 96.5%, and 96.2%, respectively). Among the 295 961 women analyzed, 243 (0.082%) developed VTE. Incidences of antepartum VTE differed significantly according to institution types (PMCs: 106.4, GHs: 51.6, and MCs: 11.6 per 100 000 women). PMCs and GHs had significantly higher incidences of postpartum VTE compared to MCs (43.3 and 26.6 vs. 10.7 per 100 000 women, respectively), although PMCs and GHs had similar incidences. Among the four women (1.4%) who died due to VTE, three and one developed a PE in a PMC and MC, respectively.PMCs had higher incidences of VTE despite their more frequent performance of thromboprophylaxis. Several pregnant women with higher risk of VTE transported to PMCs.
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- 2021
22. Tadalafil treatment for preeclampsia (medication in preeclampsia; MIE): a multicenter phase II clinical trial
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Michiko Kaneda, Shintaro Maki, Tomomi Kotani, Hiroaki Tanaka, Toru Ogura, Tadashi Kimura, Masafumi Nii, Fumi Furuhashi, Kayo Tanaka, Shoichi Magawa, Makoto Tsuji, Akihiko Sekizawa, Tomoaki Ikeda, Masayuki Endoh, and Yuki Nishimura
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medicine.medical_specialty ,030204 cardiovascular system & hematology ,Hypertensive disorder ,Tadalafil ,Preeclampsia ,law.invention ,03 medical and health sciences ,0302 clinical medicine ,Pre-Eclampsia ,Randomized controlled trial ,Pregnancy ,law ,Internal medicine ,medicine ,Humans ,Fetal Growth Retardation ,030219 obstetrics & reproductive medicine ,business.industry ,Singleton ,Obstetrics and Gynecology ,Phosphodiesterase 5 Inhibitors ,medicine.disease ,Clinical trial ,Pediatrics, Perinatology and Child Health ,Female ,business ,medicine.drug - Abstract
To evaluate the effectiveness and safety of tadalafil treatment for hypertensive disorder of pregnancy (HDP).In an open-label, randomized clinical trial, singleton pregnancies with HDP between 20 and 33 weeks of gestation were randomized to take 20 mg oral tadalafil every day (tadalafil treatment group) or no drug (conventional treatment group). The primary outcome was prolongation of pregnancy from randomization to delivery. However, this article primarily focuses on the safety assessments performed in the tadalafil treatment for HDP population, because the safety of using PDE5 inhibitors as therapeutic agents for fetal growth restriction (FGR) has been a problem worldwide.From October 2016 to March 2018, 28 patients were randomized to each group and two cases were excluded (tadalafil treatment group: 12 cases; conventional treatment group: 14 cases). The significant adverse events related to tadalafil did not occur in the tadalafil treatment group. Among maternal adverse events, specifically with regard to headaches, there were significant differences between the two groups (0% in tadalafil group versus 43% in conventional treatment group;Tadalafil treatment is safe for pregnant women with HDP. Moreover, tadalafil did not prolong the gestational period in pregnant women with HDP.
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- 2019
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23. Phase-1 clinical study of tadalafil administered for selective fetal growth restriction in twin pregnancy
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Tomoaki Ikeda, Masafumi Nii, Fumi Furuhashi, Kayo Tanaka, Hiroaki Tanaka, Eiji Kondo, Michiko Kubo, Shintaro Maki, and Shoichi Magawa
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Placenta ,Physiology ,030204 cardiovascular system & hematology ,Tadalafil ,Clinical study ,03 medical and health sciences ,0302 clinical medicine ,Pregnancy ,Fetal growth ,Humans ,Medicine ,reproductive and urinary physiology ,Twin Pregnancy ,Fetus ,Fetal Growth Retardation ,030219 obstetrics & reproductive medicine ,business.industry ,Infant, Newborn ,Obstetrics and Gynecology ,Twins, Monozygotic ,embryonic structures ,Pediatrics, Perinatology and Child Health ,Pregnancy, Twin ,Normal growth ,Female ,business ,medicine.drug - Abstract
Selective fetal growth restriction (sFGR) is a condition of twin pregnancy in which the development of one fetus is restricted, despite normal growth of the other fetus. A method of intrauterine therapy for sFGR does not currently exist. The only treatment for sFGR is to terminate the pregnancy before the FGR worsens. In twin pregnancies, maternal and intrauterine environments are common in both fetuses, thus a placental factor is considered the cause of FGR in fetuses. Tadalafil is a phosphodiesterase (PDE)-5 inhibitor that induces an increase in uterine blood flow by dilatation of blood vessels in cases of FGR with placental dysfunction, which improves FGR.The aim of this study was to investigate the safety and maximum tolerated dose (MTD) of tadalafil administered for twin pregnancy (diamniotic-monochorionic twin or diamniotic-dichorionic twin).In this phase I, open-label, dose-escalation trial, sequential patient cohorts (3 + 3 dose-escalation design) for twin pregnancy received tadalafil (20 or 40 mg/d) as a single dose by oral administration from the day they were diagnosed with sFGR, defined as estimated fetal weight (EFW)3% tiles, that is, -1.8Six women with sFGR who were pregnant with twins were treated with tadalafil. There were no severe adverse events in either cohort, although the most common (≥3 patients) drug-related adverse events were headache and heart failure. The MTD of tadalafil among Japanese patients was 40 mg.Tadalafil has a manageable safety profile up to an MTD of 40 mg/d.
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- 2019
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24. A retrospective cohort study using a national surveillance questionnaire to investigate the characteristics of maternal venous thromboembolism in Japan in 2018
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Mamoru Morikawa, Masafumi Nii, Tomoko Adachi, Atsuo Itakura, Yasushi Nakabayashi, and Takao Kobayashi
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medicine.medical_specialty ,Antepartum ,Deep vein ,Pregnancy Complications, Cardiovascular ,Reproductive medicine ,Overweight ,Cohort Studies ,03 medical and health sciences ,0302 clinical medicine ,Japan ,Postpartum ,Pregnancy ,Surveys and Questionnaires ,Humans ,Medicine ,cardiovascular diseases ,Retrospective Studies ,030219 obstetrics & reproductive medicine ,Pulmonary thromboembolism ,business.industry ,Vaginal delivery ,Obstetrics ,Research ,Incidence (epidemiology) ,Postpartum Period ,Obstetrics and Gynecology ,Retrospective cohort study ,Gynecology and obstetrics ,Venous Thromboembolism ,equipment and supplies ,medicine.disease ,Thrombosis ,medicine.anatomical_structure ,030228 respiratory system ,RG1-991 ,Female ,Pregnant Women ,medicine.symptom ,business - Abstract
Background In Japan, the numbers of deliveries by women of older maternal age and women with overweight or obesity have recently increased. Since 2008, the guidelines and practices to prevent the maternal venous thromboembolism (VTE) have been recommended antepartum and postpartum thromboprophylaxis for each risk level of VTE. This study aimed to clarify the incidence and characteristics (type of VTE and thromboprophylaxis) of VTE in pregnant women in Japan to reduce the rate of mortality from VTE Methods Of 2299 institutions sent the surveillance questionnaire, 666 (29.0%) responded, and data from 295,961 women who gave birth in those institutions in 2018 were analyzed. We calculated the incidence and characteristics of VTE before and after the deliveries. Results At the responding institutions, 243 women (0.082%) had VTE in 2018. In 2018, deep vein thrombosis was significantly more common (0.0053%) than pulmonary thromboembolism (0.0019%; p p p Conclusions Among the women thought to have a low risk of VTE during the antepartum period, and especially women who had a vaginal delivery, the actual incidence of VTE might have increased in Japan.
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- 2021
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25. Prognostic Benefit of ≥6 Cycles of Neoadjuvant Chemotherapy for Advanced Ovarian, Tubal, and Peritoneal Cancers
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Kenta Yoshida, Ryo Nimura, Shintaro Maki, Michiko Kaneda, Masafumi Nii, Tomoaki Ikeda, Tsutomu Tabata, and Eiji Kondo
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Cancer Research ,medicine.medical_specialty ,Paclitaxel ,medicine.medical_treatment ,Urology ,Antineoplastic Agents ,Kaplan-Meier Estimate ,Lower risk ,Complete resection ,Resection ,Carboplatin ,Antineoplastic Combined Chemotherapy Protocols ,Overall survival ,Medicine ,Fallopian Tube Neoplasms ,Humans ,Peritoneal Neoplasms ,Aged ,Retrospective Studies ,Ovarian Neoplasms ,Chemotherapy ,business.industry ,General Medicine ,Middle Aged ,Debulking ,medicine.disease ,Prognosis ,Neoadjuvant Therapy ,Oncology ,Female ,business ,Ovarian cancer ,Progressive disease - Abstract
BACKGROUND/AIM A higher number of neoadjuvant chemotherapy (NACT) cycles translate to a lower risk of morbidity and mortality, but few studies have analyzed the prognostic impact of >4 cycles of NACT. PATIENTS AND METHODS Overall, 52 patients [31 patients, NACT plus interval debulking surgery (IDS); 21 patients, NACT alone owing to progressive disease] who underwent NACT between January 2008 and December 2014 were evaluated. RESULTS In total, 6, 7-10, and 11-18 cycles of NACT were performed in 52.3%, 27.3%, and 20.5% of the patients, respectively. The median overall survival was 76.0 months (range=36.0-94.0 months), and the median progression-free survival was 26.0 months (range=18.0-54.0 months) in the NACT plus IDS group. CONCLUSION At least six cycles of NACT plus IDS are associated with a lower rate of multi-organ resection and a high rate of complete resection or optimal (
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- 2021
26. Effectiveness of Laparoscopic Combined Retroperitoneal and Transperitoneal Approach in Para-aortic Lymphadenectomy for Endometrial Cancer
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Shintaro Maki, Eiji Kondo, Tomoaki Ikeda, Kenta Yoshida, Ryo Nimura, Michiko Kubo-Kaneda, and Masafumi Nii
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Cancer Research ,medicine.medical_specialty ,Transperitoneal approach ,Blood transfusion ,medicine.medical_treatment ,Kaplan-Meier Estimate ,Laparotomy ,medicine ,Humans ,Laparoscopy ,Aorta ,Aged ,Retrospective Studies ,medicine.diagnostic_test ,business.industry ,Endometrial cancer ,Medical record ,Retrospective cohort study ,General Medicine ,Middle Aged ,medicine.disease ,Surgery ,Endometrial Neoplasms ,Treatment Outcome ,Oncology ,Lymph Node Excision ,Lymphadenectomy ,Female ,business - Abstract
Background/aim This study aimed to compare laparoscopy with laparotomy and evaluate the effectiveness of a laparoscopic combined retroperitoneal and transperitoneal approach for para-aortic lymphadenectomy in patients with endometrial cancer. Patients and methods In this single-center retrospective study, patients with endometrial cancer who underwent para-aortic lymphadenectomy between December 2016 and November 2019 were analyzed. The patient's clinical and pathologic data were procured from medical records. Statistical analyses were performed using Fisher's exact and the Mann-Whitney U-tests. Results A total of 37 and 28 patients were included in the laparoscopic and laparotomy groups, respectively. The laparoscopic group had similar operative time, similar number of resected para-aortic and pelvic lymph nodes, less intraoperative blood loss and complications, lower rate of blood transfusion, and shorter postoperative stay than the laparotomy group. Conclusion Laparoscopic combined retroperitoneal and transperitoneal approach for endometrial cancer is safe and effective compared to laparotomy.
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- 2021
27. Capacity of Japanese institutions to manage obstetrical disseminated intravascular coagulation in 2018: A national surveillance questionnaire and retrospective cohort study
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Mamoru Morikawa, Masafumi Nii, Tomoko Adachi, Takao Kobayashi, Atsuo Itakura, and Yasushi Nakabayashi
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Disseminated intravascular coagulation ,medicine.medical_specialty ,Blood transfusion ,business.industry ,Obstetrics ,Incidence (epidemiology) ,medicine.medical_treatment ,Postpartum Hemorrhage ,Obstetrics and Gynecology ,Retrospective cohort study ,Disseminated Intravascular Coagulation ,Fibrinogen ,medicine.disease ,Fibrinogen levels ,Japan ,Pregnancy ,Surveys and Questionnaires ,Medicine ,Humans ,Female ,Fresh frozen plasma ,business ,medicine.drug ,Retrospective Studies - Abstract
Aim To investigate the management of obstetrical disseminated intravascular coagulation (DIC) in Japan. Methods We sent a surveillance questionnaire to 2299 institutions to collect details about the deliveries they performed in 2018. We investigated differences in the management of obstetrical DIC among three types of institutions: perinatal medical centers (PMCs), general hospitals with obstetrical facilities (GHs), and maternal clinics with beds (MCs). Results We received responses from 703 institutions (30.6% of the total mailed) with results of 306 799 women who gave birth in 2018. In Japan, the potential to treat postpartum hemorrhage and obstetrical DIC was high in the PMC group, moderate in the GH group, and low in the MC group. The incidence of obstetrical DIC in the PMC group (0.44%) was significantly higher than that in the GH (0.21%) and MC (0.06%) groups. The mortality of women with obstetrical DIC in PMCs (1.3%) was similar to that in GHs (0.6%) and MCs (0.0%). The percentages of PMCs that always or sometimes transfused fresh frozen plasma or fibrinogen concentrates (100% and 42.2%, respectively) were significantly higher than those in the GH (88.2% and 29.5%, respectively) and MC groups (29.4% and 5.3%, respectively). Furthermore, institutions whose internal protocols mandated that replacement therapy be always administered in women with obstetrical DIC scores of ≥8 had similar protocols to those for women with fibrinogen levels of ≤1.5 g/L. Conclusions The capacity to provide therapy for postpartum hemorrhage and obstetrical DIC varied widely among the three groups of institutions.
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- 2021
28. Characteristics of Maternal Venous Thromboembolism in Japan, 2018: A Retrospective Cohort Study with National Surveillance Questionnaire Conducted in Maternity Hospitals
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Mamoru Morikawa, Tomoko Adachi, Atsuo Itakura, Masafumi Nii, Yasushi Nakabayashi, and Takao Kobayashi
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cardiovascular diseases ,equipment and supplies - Abstract
Background: In Japan, deliveries by women of older maternal age and by women with overweight or obesity have recently increased. While, since 2008, the guidelines and practices to prevent the maternal VTE have been recommended. This study aims to clarify the incidence and characteristics of venous thromboembolism (VTE) in pregnant women in Japan to reduce the rate of mortality from VTE.Methods: Of 2299 institutions sent the surveillance questionnaire, 666 (29.0%) responded, and data from 295,961 women who gave birth in those institutions in 2018 were analyzed. We calculated the incidence and characteristics of VTE before and after the deliveries in the three types of institutions (perinatal medical centers, general hospital with obstetric facilities, and maternal clinic with beds). To clarify the incidence and characteristics of VTE, and to clarify the relationship between the incidence of the VTE and the types of institutions in 2018 in Japan.Results: At the responding institutions, 20 (0.0068%) died, and 243 women (0.082%) had VTE. Deep vein thrombosis was significantly more common (0.0053%) than pulmonary thromboembolism (0.0019%; p < 0.0001). The incidence of antepartum VTE (0.0055%) was significantly higher than that of postpartum VTE (0.0026%; p < 0.0001). Among the 165 women with antepartum VTE, perioperative pulmonary thromboembolism (30.0%) was more common than perioperative deep vein thrombosis (8.8%, p = 0.0150). The incidence of VTE after cesarean section (0.0074%) was significantly higher than that after vaginal delivery (0.0012%; p < 0.0001). After cesarean section, the incidence of pulmonary thromboembolism (46.4%) was significantly higher than that of deep vein thrombosis (10.8%; p < 0.0001). Of the women with VTE, four (1.6%) died.Conclusions: Obstetricians should be strongly encouraged to administer thromboprophylaxis to decrease the incidence of VTE because among women thought to have low risk of VTE, the incidence might have increased in Japan.
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- 2021
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29. Laparoscopic Retroperitoneal Para-aortic Lymph Node Biopsy in Advanced Cervical Cancer with Pelvic Lymph Node Metastases: A Single-centre Prospective Study
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Kenta Yoshida, Eiji Kondo, Tsuyoshi Matsumoto, Shintaro Maki, Michiko Kaneda, Masafumi Nii, Toru Hirata, and Tomoaki Ikeda
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Backgroud: Extended-field concurrent chemoradiation therapy (Ex-CCRT) is widely used for para-aortic lymph node (PAN) metastasis confirmed by radiographic assessment without surgical assessment. The objective of this prospective study was to evaluate the clinical value of laparoscopic retroperitoneal PAN biopsy in locally advanced cervical cancer (LACC) with pelvic lymph node metastases.Methods: From May 2017 to March 2020, patients with stage IIB-IIIB cervical cancer, who were diagnosed with pelvic node metastasis using positron emission tomography-computed tomography (PET-CT) with SUVmax ≥ 2.0, underwent laparoscopic retroperitoneal PAN biopsy. The radiation fields were extended to the PAN area with pathological metastases.Results: Fourteen patients were diagnosed with squamous cell carcinoma of the cervix at FIGO stage IIB (n=7) and IIIB (n=7). The median operating time was 138 (range, 104–184) minutes. The median number of harvested PANs was 19 (range, 6–36). Three patients were diagnosed as positive for PAN metastasis by histological analysis. In this study, the sensitivity and specificity of PET-CT were 66.7% and 90.9%, respectively.Conclisions: The results of this study revealed that laparoscopic retroperitoneal PAN should be the standard treatment method worldwide because it is not appropriate to determine the radiation field of PAN by image examination without performing a histological assessment.
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- 2020
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30. Effect of hypofibrinogenemia on obstetrical disseminated intravascular coagulation in Japan in 2018: a multicenter retrospective cohort study
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Atsuo Itakura, Shintaro Makino, Mamoru Morikawa, Yoshiharu Takeda, Mariko Serizawa, Takao Kobayashi, Shigetaka Matsunaga, Masafumi Nii, Tomoko Adachi, and Hironobu Hyoudo
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Adult ,medicine.medical_specialty ,Blood transfusion ,medicine.medical_treatment ,Fibrinogen ,Gastroenterology ,03 medical and health sciences ,0302 clinical medicine ,Japan ,Pregnancy ,Internal medicine ,Coagulopathy ,medicine ,Humans ,Blood Transfusion ,Retrospective Studies ,Disseminated intravascular coagulation ,Hematology ,business.industry ,Postpartum Hemorrhage ,Disease Management ,Retrospective cohort study ,Hypofibrinogenemia ,Disseminated Intravascular Coagulation ,medicine.disease ,Afibrinogenemia ,030220 oncology & carcinogenesis ,Case-Control Studies ,Maternal death ,Female ,business ,circulatory and respiratory physiology ,030215 immunology ,medicine.drug - Abstract
Japanese obstetrical hemorrhage recommendations state that not only pregnant women with an obstetrical disseminated intravascular coagulation (DIC) score ≥ 8 points but also those with fibrinogen levels ≤ 1.5 g/L have a high risk of maternal death and warrant blood transfusion. Our aim was to demonstrate the potential of fibrinogen levels ≤ 1.5 g/L as predictors of a Japanese obstetrical DIC score of ≥ 8. We included 595 participants with blood loss ≥ 1000 mL during vaginal delivery or ≥ 2000 mL during cesarean delivery. The frequency and volume of red blood cell (RBC), fresh-frozen plasma, platelet concentrate (PC), and fibrinogen administration in women with a DIC score of ≥ 8 and fibrinogen levels of ≤ 1.5 g/L were significantly higher than controls (P
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- 2020
31. Risk Factors for Cardiovascular Events among Pregnant Women with Cardiovascular Disease
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Masafumi Nii, Kayo Tanaka, Hiroaki Tanaka, Yumi Shiina, Koichiro Niwa, Shinji Katsuragi, Tomoaki Ikeda, and Chizuko Kamiya
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Cardiovascular event ,Adult ,medicine.medical_specialty ,Pregnancy Complications, Cardiovascular ,Disease ,030204 cardiovascular system & hematology ,03 medical and health sciences ,0302 clinical medicine ,Japan ,Pregnancy ,Risk Factors ,cardiovascular disease ,Surveys and Questionnaires ,Clinical information ,Internal Medicine ,medicine ,Humans ,Risk factor ,Retrospective Studies ,Obstetrics ,business.industry ,Pregnancy Outcome ,Prenatal Care ,General Medicine ,Odds ratio ,medicine.disease ,cardiovascular event ,Confidence interval ,maternal death ,Cardiovascular Diseases ,Case-Control Studies ,030211 gastroenterology & hepatology ,Maternal death ,Female ,Original Article ,business - Abstract
Objective Cardiovascular disease increases the risk of maternal mortality. This study examined the risk factors for cardiovascular events in pregnant women with cardiovascular disease. Methods This was a case-control study conducted in 2 phases at Japanese maternal and fetal care centers. The primary survey, using an interviewer-administered questionnaire, investigated whether the institutions had managed pregnant women with cardiovascular disease from April 2014 to March 2016. From 424 individual facilities surveyed, 135 facilities were found to have experience in managing pregnant women. In the secondary survey, the 135 institutions were asked to complete a web-based questionnaire, which collected detailed clinical information about cases, including cardiovascular disease, cardiovascular events, maternal background, and the perinatal outcome. Results Information on 302 pregnant women with cardiovascular disease was collected. None of the 302 patients died. There were 25 women with cardiovascular events (cardiovascular event group) and 277 women without cardiovascular events (non-cardiovascular event group); the two groups were compared. No significant differences were found in the perinatal outcomes. Medication use before pregnancy was identified as a risk factor for cardiovascular events (adjusted odds ratio, 23.28; 95% confidence interval, 8.15-66.47; pI were risk factors for cardiovascular events in pregnant women with cardiovascular disease.
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- 2020
32. Reference range for C1-esterase inhibitor (C1 INH) in the third trimester of pregnancy
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Shoichi Magawa, Sho Takakura, Kuniaki Toriyabe, Hiroaki Tanaka, Shintaro Maki, Kayo Tanaka, Shinji Katsuragi, Masafumi Nii, Naosuke Enomoto, and Tomoaki Ikeda
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Adult ,medicine.medical_specialty ,Pregnancy Trimester, Third ,Reference range ,Third trimester ,C1-inhibitor ,03 medical and health sciences ,Amniotic fluid embolism ,0302 clinical medicine ,Pregnancy ,Reference Values ,Coagulopathy ,medicine ,Humans ,030212 general & internal medicine ,Prospective Studies ,biology ,business.industry ,Obstetrics ,Obstetrics and Gynecology ,medicine.disease ,Confidence interval ,Uterine atony ,030228 respiratory system ,Pediatrics, Perinatology and Child Health ,biology.protein ,Female ,business ,Complement C1 Inhibitor Protein - Abstract
Objectives The objectives of this study were to (i) establish the reference range and mean value for normal levels of C1-esterase inhibitor (C1 INH) during pregnancy, and (ii) investigate the association between C1 INH and uterine atony, as measured by blood loss at delivery. Methods We prospectively studied 200 healthy pregnant women who were registered. We studied C1 INH levels in 188 women at 34 and 35 gestational weeks of pregnancy. The reference range for C1 INH during the third trimester of pregnancy was calculated using the value of C1 INH that was determined at registration. Results The mean value of C1 INH was determined to be 70.3% (95% confidence interval, 68.7–71.9). While the C1 INH levels in four women were determined to be 40% lower than the calculated mean value, amniotic fluid embolism (AFE) did not occur in any of the women studied. Conclusions This study successfully demonstrated that a reference value for C1 INH activity can be established using the methods described herein. Further research is needed to determine whether C1 INH is involved in obstetric coagulopathy syndrome such as amniotic fluid embolism.
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- 2020
33. A literature review of herpes simplex virus hepatitis in pregnancy
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Fumi Furuhashi, Kuniaki Toriyabe, Shintaro Maki, Masafumi Nii, Shoichi Magawa, Tomoaki Ikeda, and Hiroaki Tanaka
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Adult ,viruses ,Acyclovir ,Disease ,medicine.disease_cause ,Antiviral Agents ,Diagnosis, Differential ,03 medical and health sciences ,0302 clinical medicine ,Pregnancy ,medicine ,Humans ,Simplexvirus ,030212 general & internal medicine ,Hepatitis ,Cesarean Section ,business.industry ,Obstetrics and Gynecology ,Herpes Simplex ,medicine.disease ,Virology ,Pregnancy Complications ,Herpes simplex virus ,Liver ,Pediatrics, Perinatology and Child Health ,Female ,030211 gastroenterology & hepatology ,Maternal death ,business - Abstract
Purpose: Hepatitis due to herpes simplex virus (HSV) during pregnancy is rare, it is often not included in the differential disease. However, hepatitis leads to maternal death; hence, early diagnos...
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- 2018
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34. Long-term survival of a patient with malignant transformation of extragonadal endometriosis treated solely with chemotherapy: A case report
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Kenta Yoshida, Tomoaki Ikeda, Eiji Kondo, Shintaro Maki, Masafumi Nii, and Tsutomu Tabata
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medicine.medical_specialty ,Chemotherapy ,030219 obstetrics & reproductive medicine ,Extragonadal ,Pelvic exenteration ,business.industry ,medicine.medical_treatment ,Endometriosis ,Obstetrics and Gynecology ,Rectum ,Vaginectomy ,Combination chemotherapy ,medicine.disease ,Surgery ,03 medical and health sciences ,0302 clinical medicine ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,Clear cell carcinoma ,medicine ,business - Abstract
A 52-year-old woman presented to our hospital complaining of genital bleeding and was found to have a 50-mm vaginal tumor that involved the bladder, rectum, and small bowel and extended to the left pelvic side wall. Her history included a bilateral salpingo-oophorectomy and a total abdominal hysterectomy for fibroids and endometriosis. She had been prescribed estrogen replacement therapy (1.25 mg/day) following the second surgery and continued it for 8 years. The pathology of the vaginal biopsy showed endometrioid adenocarcinoma. Total pelvic exenteration was recommended for complete resection, but she chose chemotherapy (paclitaxel 175 mg/m2 and carboplatin AUC:6). Clinical complete remission was obtained for 11 years. She had a recurrence 11 years later. She was again found to have a 5-cm vaginal tumor. Surgical excision with upper vaginectomy was performed. The tumor was resected without invasion of the bladder, rectum and small bowel. Histologic examination of the specimen confirmed clear cell carcinoma with endometriosis. Chemotherapy may be the first-line treatment that can preclude aggressive surgery for malignant transformation of extragonadal endometriosis. However, combined chemotherapy and surgery is necessary for this disease.
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- 2018
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35. In utero spontaneous bladder rupture in a fetus with posterior urethral valve: A case report of prenatal diagnosis and management
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Masafumi Nii, Hiroaki Tanaka, Shoichi Magawa, Yuki Kamimoto, Shintaro Maki, and Tomoaki Ikeda
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Posterior urethral valve ,medicine.medical_specialty ,Fetus ,030219 obstetrics & reproductive medicine ,Amniotic fluid ,Spontaneous Bladder Rupture ,business.industry ,Obstetrics and Gynecology ,Gestational age ,Oligohydramnios ,Prenatal diagnosis ,urologic and male genital diseases ,medicine.disease ,female genital diseases and pregnancy complications ,Surgery ,03 medical and health sciences ,0302 clinical medicine ,030220 oncology & carcinogenesis ,Medicine ,business ,Hydronephrosis - Abstract
Posterior urethral valve (PUV) rarely causes bladder rupture. We experienced hydronephrosis due to ureteral obstruction after the natural repair of a ruptured bladder in a fetus with PUV. Fetal ascites and oligohydramnios were diagnosed at 26 weeks' gestational age. While we followed up with ultrasonography, we regularly removed the fetal ascites via abdominal puncture, injecting warm saline instead of amniotic fluid. At 35 weeks' gestational age, the infant was diagnosed with severe bilateral hydronephrosis, absent of ascites and oligohydramnios. Therefore, a Caesarean section was performed. After birth, the infant was diagnosed with hydronephrosis due to ureteral obstruction after the natural repair of a ruptured bladder associated with PUV. Thus, a ruptured bladder in a fetus with PUV that has naturally repaired should be closely monitored via ultrasonography for hydronephrosis due to ureteral obstruction.
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- 2018
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36. Management of fetal growth restriction using the contraction stress test: a case-control study
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Kuniaki Toriyabe, Junko Watanabe, Masafumi Nii, Tomoaki Ikeda, Hiroaki Tanaka, Yuki Kamimoto, Fumi Furuhashi, Shoich Magawa, Kayo Tanaka, Takeshi Matsumoto, and Takashi Umekawa
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Adult ,Male ,medicine.medical_specialty ,Perinatal Death ,Birth weight ,Contraction stress test ,Oxytocin ,law.invention ,Uterine Contraction ,03 medical and health sciences ,0302 clinical medicine ,Pregnancy ,law ,Physical Stimulation ,medicine.artery ,0502 economics and business ,medicine ,Birth Weight ,Humans ,Retrospective Studies ,Fetal Growth Retardation ,030219 obstetrics & reproductive medicine ,business.industry ,Obstetrics ,05 social sciences ,Infant, Newborn ,Pregnancy Outcome ,Case-control study ,Obstetrics and Gynecology ,Retrospective cohort study ,Umbilical artery ,medicine.disease ,Intensive care unit ,Treatment Outcome ,Case-Control Studies ,Nipples ,Pediatrics, Perinatology and Child Health ,Apgar Score ,Exercise Test ,Female ,050211 marketing ,Apgar score ,business ,human activities - Abstract
Purpose: Fetal growth restriction (FGR) is a concerning health issue. However, studies on FGR management are limited due to its rarity. We aimed to evaluate the efficacy of the contraction stress test (CST) for FGR management.Materials and methods: A case-control retrospective study design. Our institute innovated CST in FGR management in 2017. We included women in their 33rd–40th week of pregnancy with a diagnosis of FGR and retrospectively divided them into groups: the CST group (FGR management with CST) and no CST group (FGR management without CST) before and after CST development. Neonatal outcome, pH, and pO2 of umbilical artery (UA) were compared between the two groups.Results: No significant differences in the rate of birth weight, Apgar score
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- 2018
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37. Placental growth factor as a predictor of the efficacy of tadalafil treatment for fetal growth restriction
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Eiji Kondo, Yuki Kamimoto, Tomoaki Ikeda, Shintaro Maki, Masafumi Nii, Takashi Umekawa, Kazuhiro Osato, Hiroaki Tanaka, and Michiko Kubo-Kaneda
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Adult ,Placental growth factor ,Administration, Oral ,Gestational Age ,030204 cardiovascular system & hematology ,Tadalafil ,Fetal Development ,Andrology ,03 medical and health sciences ,0302 clinical medicine ,Obstetrics and gynaecology ,Pregnancy ,Fetal growth ,medicine ,Humans ,Fetal therapy ,Placenta Growth Factor ,Retrospective Studies ,Fetal Growth Retardation ,030219 obstetrics & reproductive medicine ,business.industry ,Obstetrics and Gynecology ,Phosphodiesterase 5 Inhibitors ,Pediatrics, Perinatology and Child Health ,Female ,business ,medicine.drug - Abstract
Purpose: We recently demonstrated the efficacy of tadalafil treatment for fetal growth restriction (FGR). This study aimed to evaluate the utility of serum placental growth factor (PlGF) level for ...
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- 2018
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38. Management of pregnancy complicated with intracranial arteriovenous malformation
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Koji Iihara, Shinji Katsuragi, Reiko Neki, Kenji Fukuda, Tomoaki Ikeda, Jun Yoshimatsu, Tetsu Satow, Takekazu Miyoshi, Eika Hamano, Hiroaki Tanaka, Jun Takahashi, Kazuyuki Nagatsuka, Kayo Tanaka, Masafumi Nii, Kazunori Toyoda, and Susumu Miyamoto
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medicine.medical_specialty ,Pregnancy ,Fetus ,Obstetrics ,business.industry ,Glasgow Coma Scale ,Obstetrics and Gynecology ,Gestational age ,Arteriovenous malformation ,Retrospective cohort study ,030204 cardiovascular system & hematology ,medicine.disease ,Lesion ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Neurosurgery ,medicine.symptom ,business ,030217 neurology & neurosurgery - Abstract
AIM To clarify the perinatal outcomes in pregnancy complicated with intracranial arteriovenous malformation (i-AVM). METHODS A retrospective study was performed in 36 pregnancies complicated by i-AVM from 1981 to 2013 at one institution. RESULTS In total, 6 women miscarried, and 30 had live births. The median (range) gestational age at delivery was 38 (24-40) weeks; 11 cases experienced initial i-AVM rupture during pregnancy (first, second and third trimester: 18%, 64% and 18%, respectively). At onset, 4 cases had a Glasgow Coma Scale ≤10, 10 cases needed emergency maternal transport, 4 underwent neurosurgery with the fetus in utero and 4 had termination of pregnancy in the second trimester for emergent treatment for i-AVM. Two cases delivered vaginally. Another 25 cases had already been diagnosed as i-AVM at conception. Of these, as an indication for epidural birth, 18 cases had either residual lesion of i-AVM or neurological symptoms, although 18 cases had received treatments of i-AVM before conception. Without rupture of i-AVM and worsening of symptoms, 15 cases succeeded in epidural birth. One case was delivered by cesarean section for residual i-AVM with indication of treatment. Another case who had refused treatment of i-AVM experienced rupture of i-AVM 1 year after delivery. CONCLUSION Most of the cases with residual i-AVM lesion and neurological symptoms could deliver vaginally without worsening of symptoms. However, pregnancy with i-AVM can be complicated by rupture of i-AVM. In cases with a residual lesion with indication of treatment and rupture of i-AVM during pregnancy, meticulous care is required during pregnancy and after delivery.
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- 2018
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39. Tadalafil Improves L-NG-Nitroarginine Methyl Ester-Induced Preeclampsia With Fetal Growth Restriction-Like Symptoms in Pregnant Mice
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Eiji Kondo, Masahiro Okuda, Shintaro Maki, Yuki Kamimoto, Kayo Tanaka, Takashi Umekawa, Kenji Ikemura, Hiroaki Tanaka, Kan Katayama, Masafumi Nii, Toshimichi Yoshida, Takekazu Miyoshi, Kento Yoshikawa, Michiko Kubo, Tomoaki Ikeda, Ning Ma, Hiroshi Hosoda, and Kazuhiro Osato
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Placental growth factor ,medicine.medical_specialty ,medicine.drug_mechanism_of_action ,Placenta ,Blood Pressure ,030204 cardiovascular system & hematology ,Kidney ,medicine.disease_cause ,Tadalafil ,Preeclampsia ,Fetal Development ,Mice ,03 medical and health sciences ,0302 clinical medicine ,Pre-Eclampsia ,Pregnancy ,Internal medicine ,Internal Medicine ,Fetal growth ,Animals ,Medicine ,Enzyme Inhibitors ,Cyclic GMP ,reproductive and urinary physiology ,Fetal Growth Retardation ,030219 obstetrics & reproductive medicine ,Proteinuria ,business.industry ,Phosphodiesterase 5 Inhibitors ,medicine.disease ,Mice, Inbred C57BL ,Oxidative Stress ,NG-Nitroarginine Methyl Ester ,Blood pressure ,Endocrinology ,Female ,medicine.symptom ,business ,Phosphodiesterase 5 inhibitor ,Oxidative stress ,medicine.drug - Abstract
BACKGROUND We investigated the efficacy and mechanisms of tadalafil, a selective phosphodiesterase 5 inhibitor, in treating preeclampsia (PE) with fetal growth restriction (FGR) using L-NG-nitroarginine methyl ester (L-NAME)-induced PE with FGR in pregnant mice as our experimental model. METHODS C57BL/6 mice were divided into 2 groups 11 days postcoitum (d.p.c.). A control group of dams (C dam) received 0.5% carboxymethylcellulose (CMC). A L-NAME-treated group received 1 mg/ml L-NAME dissolved in CMC. The L-NAME-treated dams were divided into 2 subgroups 13 d.p.c. One subgroup continued to receive L-NAME (L dams). The other subgroup received L-NAME with 0.08 mg/ml tadalafil suspended in CMC (TL dams). Maternal systolic blood pressure (SBP) and proteinuria were assessed 16 d.p.c. Fetal weight was recorded, and placentas and maternal kidneys were collected 17 d.p.c. RESULTS Maternal SBP, proteinuria, and fetal weight were improved for TL dams compared to L dams. The placental concentration of placental growth factor (PlGF) was higher for TL dams than for the C and L dams. The placental maternal blood sinuses of L dams were narrower than those of C dams, but those of TL dams improved to a similar width as C dams. Glomerular oxidative stress was ameliorated in TL dams compared to L dams. CONCLUSIONS Tadalafil dilates the placental maternal blood sinuses, which leads to increase PlGF production, and contributes to facilitate fetal growth and improve maternal SBP. Moreover, tadalafil ameliorates glomerular damage by reducing oxidative stress. These results suggest that tadalafil is a candidate for treatment of PE with FGR.
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- 2017
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40. Safety and dose-finding trial of tadalafil administered for fetal growth restriction: A phase-1 clinical study
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Eiji Kondo, Shintaro Maki, Masafumi Nii, Hiroaki Tanaka, Kazuhiro Osato, Michiko Kubo, Takashi Umekawa, Nao Murabayashi, Yuki Kamimoto, and Tomoaki Ikeda
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Fetus ,medicine.medical_specialty ,030219 obstetrics & reproductive medicine ,business.industry ,Obstetrics ,Obstetrics and Gynecology ,030204 cardiovascular system & hematology ,Umbilical cord ,Tadalafil ,Clinical study ,03 medical and health sciences ,Dose finding ,0302 clinical medicine ,medicine.anatomical_structure ,Anesthesia ,medicine ,Fetal growth ,Population study ,Adverse effect ,business ,medicine.drug - Abstract
Aim We designed a safety and dose-finding trial of tadalafil administered for fetal growth restriction (FGR). Methods Three cases were initially commenced on 10 mg/day and monitored for major adverse events. Should a major adverse event be observed in one or more of the three cases, an examination into its relation with tadalafil would be conducted by a safety evaluation committee. If one or more of these new cases exhibited the same adverse event, the trial would be stopped completely. If there were no harmful side-effects, the trial would be extended to three cases at 20 mg/day, and the protocol would continue as in the 10-mg/day dose. The 40-mg/day dosage was tried in six cases as the dosage was considered to be high. Results The study population consisted of pregnant women with FGR. Maternal adverse events in all doses were recorded as least one grade 1 adverse events, as tadalafil was considered acceptable from the viewpoint of the mothers. However, a dose of 40 mg/day increased the number of grade 1 adverse events. The only fetal adverse event was a case of intrauterine fetal death related to the velamentous insertion of the umbilical cord. Neonatal adverse events showed no correlation to tadalafil dose, but were found more frequently in preterm births and, therefore, were correlated to infant prematurity. Conclusion This safety and dose-finding trial showed that tadalafil had a favorable safety profile for pregnant women and fetuses with FGR.
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- 2017
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41. Treatment using tadalafil for severe pre-eclampsia with fetal growth restriction
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Takashi Umekawa, Hiroaki Tanaka, Tomoaki Ikeda, Masafumi Nii, Michiko Kubo, and Sintarou Maki
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medicine.medical_specialty ,medicine.drug_mechanism_of_action ,macromolecular substances ,030204 cardiovascular system & hematology ,03 medical and health sciences ,0302 clinical medicine ,Placenta ,Internal medicine ,Fetal growth ,medicine ,Pregnancy ,030219 obstetrics & reproductive medicine ,Eclampsia ,Proteinuria ,Obstetrics ,business.industry ,Obstetrics and Gynecology ,medicine.disease ,Tadalafil ,medicine.anatomical_structure ,Endocrinology ,Gestation ,medicine.symptom ,business ,Phosphodiesterase 5 inhibitor ,medicine.drug - Abstract
For severe pre-eclampsia (PE) with fetal growth restriction (FGR), the only effective treatment is early delivery of the placenta. Clinicians are often forced to end the pregnancy because of maternal indications. We report a case of severe PE with FGR in which the PE was temporarily improved and pregnancy successfully prolonged with tadalafil, a phosphodiesterase 5 inhibitor. A 35-year-old primigravid woman presented at 27 3/7 weeks of gestation with severe PE and FGR. After commencing tadalafil administration, biochemical and angiogenic markers improved. Thereafter, hypertension and proteinuria temporarily improved. Importantly, the pregnancy was prolonged by 14 days after the initiation of tadalafil administration. Tadalafil may be a novel treatment for severe PE with FGR to prolong pregnancy.
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- 2017
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42. Intrapartum cardiotocogram monitoring between obstetricians and computer analysis
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Tomoaki Ikeda, Shintaro Maki, Kuniaki Toriyabe, Eiji Kondo, Hiroaki Tanaka, Fumi Furuhashi, Masafumi Nii, and Shoichi Magawa
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Observer Variation ,medicine.medical_specialty ,030219 obstetrics & reproductive medicine ,Cardiotocography ,business.industry ,Obstetrics ,Computers ,Obstetrics and Gynecology ,Reproducibility of Results ,Heart Rate, Fetal ,03 medical and health sciences ,0302 clinical medicine ,Fetal heart rate ,Computer analysis ,Pregnancy ,embryonic structures ,Pediatrics, Perinatology and Child Health ,Medicine ,Humans ,Female ,030212 general & internal medicine ,business ,Fetal Monitoring - Abstract
Purpose: To investigate the accuracy of computer analysis and its features to be used as a fu fetal heart rate (FHR) interpretation method in clinical settings.Methods: The Trium CTG Online® was us...
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- 2019
43. Retrospective study of tadalafil for fetal growth restriction: Impact on maternal and perinatal outcomes
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Yuka Maekawa, Takashi Umekawa, Hiroaki Tanaka, Masafumi Nii, Nao Murabayashi, Tomoaki Ikeda, Kazuhiro Osato, Michiko Kubo, and Yuki Kamimoto
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Pediatrics ,medicine.medical_specialty ,Fetus ,030219 obstetrics & reproductive medicine ,Singleton ,business.industry ,Obstetrics and Gynecology ,Gestational age ,Retrospective cohort study ,Perinatal outcome ,030204 cardiovascular system & hematology ,University hospital ,Tadalafil ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Fetal growth ,business ,reproductive and urinary physiology ,medicine.drug - Abstract
Aim The aim of this retrospective study was to assess tadalafil treatment in pregnant women with fetal growth restriction (FGR) in terms of maternal and perinatal outcomes. Methods We retrospectively analyzed 11 Japanese singleton pregnant women with FGR who received tadalafil along with conventional management for FGR at Mie University Hospital from July 2015 to February 2016 (tadalafil group). These women were matched for maternal age, parity, gestational age, and estimated fetal weight at enrollment with 14 singleton pregnant women who received only the conventional management for FGR in 2014 (conventional management group). The conventional management for FGR was performed according to guidelines for obstetric practice in Japan. Results Both birthweight and fetal growth velocity from enrollment to birth were significantly higher in the tadalafil group than in the conventional management group. The cesarean delivery rate was approximately twofold higher in the conventional management group than in the tadalafil group. Importantly, cesarean section due to non-reassuring fetal status was performed in seven pregnant women in the conventional management group (58.3%) but in none in the tadalafil group (P < 0.05, chi-squared test). Conclusions Tadalafil may improve perinatal outcome in FGR by modulating fetal growth through maintenance or improvement of fetal well-being.
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- 2016
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44. Robotic hysterectomy with pelvic lymphadenectomy for early endometrial cancer in a patient with situs inversus totalis using 3D-CT analysis: a case report
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Hideaki Yajima, Tomoaki Ikeda, Michiko Kaneda, Masafumi Nii, Eiji Kondo, and Kenta Yoshida
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Robotic hysterectomy ,Situs inversus ,medicine.medical_specialty ,Oncology ,business.industry ,Endometrial cancer ,Ct analysis ,Obstetrics and Gynecology ,Medicine ,Radiology ,business ,medicine.disease ,Pelvic lymphadenectomy - Published
- 2021
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45. Tadalafil Treatment Ameliorates Hypoxia and Alters Placental Expression of Proteins Downstream of mTOR Signaling in Fetal Growth Restriction
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Masafumi Nii, Naosuke Enomoto, Sho Takakura, Hiroaki Tanaka, Shintaro Maki, Shinji Katsuragi, Kyoka Tsuchiya, Kayo Tanaka, Tomoaki Ikeda, and Kuniaki Toriyabe
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Medicine (General) ,placenta ,Article ,Tadalafil ,fetal growth restriction ,Andrology ,R5-920 ,Pregnancy ,Placenta ,mTOR ,medicine ,Humans ,Hypoxia ,PI3K/AKT/mTOR pathway ,Sirolimus ,Fetus ,Fetal Growth Retardation ,business.industry ,TOR Serine-Threonine Kinases ,General Medicine ,Hypoxia (medical) ,Blot ,medicine.anatomical_structure ,Mechanism of action ,embryonic structures ,Female ,medicine.symptom ,business ,Immunostaining ,medicine.drug - Abstract
Background and Objectives: Fetal growth restriction (FGR) is associated with fetal mortality and is a risk factor for cerebral palsy and future lifestyle-related diseases. Despite extensive research, no effective treatment strategy is available for FGR. Mammalian target of rapamycin (mTOR) signaling is important for the growth of fetal organs and its dysregulation is associated with miscarriage. Here, we focused on mTOR signaling and investigated how the activities of phospho-ribosomal protein S6 (rps6) and phospho-eukaryotic translation initiation factor 4E (eIF-4E), which act downstream of mTOR signaling in the human placenta, change following treatment of FGR with tadalafil and aimed to elucidate the underlying mechanism of action. Placental hypoxia was investigated by immunostaining for hypoxia-inducible factor (HIF)-2&alpha, Materials and Methods: Phosphor-rps6 and phosphor-eIF4E expression were examined by Western blotting and enzyme-linked immunosorbent assay, respectively. Results: HIF-2&alpha, expression significantly increased in FGR placenta compared with that in the control placenta but decreased to control levels after tadalafil treatment. Levels of phospho-rps6 and phospho-eIF-4E were significantly higher in FGR placenta than in control placenta but decreased to control levels after tadalafil treatment. Conclusions: Tadalafil restored the levels of HIF-2&alpha, phospho-rps6, and eIF-4E in FGR placenta to those observed in control placenta, suggesting that it could be a promising treatment strategy for FGR.
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- 2020
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46. TADAFER II: Tadalafil treatment for fetal growth restriction - a study protocol for a multicenter randomised controlled phase II trial
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Shintaro Maki, Yuki Nishimura, Toru Ogura, Takashi Umekawa, Masakatsu Nishikawa, Yuki Kamimoto, Hiroaki Tanaka, Tomoaki Ikeda, Kayo Tanaka, Satoshi Tamaru, Tadashi Kimura, Tomomi Kotani, Masamitsu Nakamura, Mayumi Kodera, Masayuki Endoh, Kazuhiro Osato, Masafumi Nii, Michiko Kubo, Chisato Minamide, and Akihiko Sekizawa
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medicine.medical_specialty ,medicine.drug_mechanism_of_action ,Sildenafil ,phosphodiesterase 5 inhibitor ,Phases of clinical research ,Gestational Age ,030204 cardiovascular system & hematology ,Tadalafil ,fetal growth restriction ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Clinical Trials, Phase II as Topic ,Japan ,Pregnancy ,Internal medicine ,Intensive Care Units, Neonatal ,Obstetrics and Gynaecology ,Clinical endpoint ,Protocol ,Medicine ,Humans ,Multicenter Studies as Topic ,Prospective Studies ,Perinatal Mortality ,Randomized Controlled Trials as Topic ,Fetus ,030219 obstetrics & reproductive medicine ,Fetal Growth Retardation ,business.industry ,Infant, Newborn ,Prenatal Care ,Ultrasonography, Doppler ,General Medicine ,Phosphodiesterase 5 Inhibitors ,Institutional review board ,chemistry ,cGMP-specific phosphodiesterase type 5 ,Female ,business ,Phosphodiesterase 5 inhibitor ,medicine.drug ,study protocol - Abstract
IntroductionThere is no proven therapy to reverse or ameliorate fetal growth restriction (FGR). Sildenafil, a selective phosphodiesterase 5 (PDE5) inhibitor, has been reported to potentially play a therapeutic role in FGR, but this has not been established. Tadalafil is also a selective PDE5 inhibitor. We have demonstrated the efficacy of tadalafil against FGR along with short-term outcomes and the feasibility of tadalafil treatment. Based on the hypothesis that tadalafil will safely increase the likelihood of increased fetal growth in FGR, we designed this phase II study to prospectively evaluate the efficacy and safety of tadalafil against FGR.Methods and analysisThis study is a multicentre, randomised controlled phase II trial. A total of 140 fetuses with FGR will be enrolled from medical centres in Japan. Fetuses will be randomised to receive either the conventional management for FGR or a once-daily treatment with 20 mg of tadalafil along with the conventional management until delivery. The primary endpoint is fetal growth velocity from the first day of the protocol-defined treatment to birth (g/day). To minimise bias in terms of fetal baseline conditions and timing of delivery, a fetal indication for delivery was established in this study. The investigator will evaluate fetal baseline conditions at enrolment and will decide the timing of delivery based on this fetal indication. Infants will be followed up for development until 1.5 years of age.Ethics and disseminationThis study was approved by the Institutional Review Board of Mie University Hospital and each participating institution. Our findings will be widely disseminated through peer-reviewed publications.Trial registration numberUMIN000023778.
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- 2018
47. Safety trial of tadalafil administered for the treatment of preeclampsia
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Fumi Furuhashi, Hiroaki Tanaka, Takashi Umekawa, Kazuhiro Osato, Masafumi Nii, Yuki Kamimoto, Shintaro Maki, Tomoaki Ikeda, and Michiko Kaneda
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Adult ,medicine.medical_specialty ,Preeclampsia ,Tadalafil ,03 medical and health sciences ,0302 clinical medicine ,Pre-Eclampsia ,Pregnancy ,Internal medicine ,medicine ,Birth Weight ,Humans ,Adverse effect ,reproductive and urinary physiology ,030219 obstetrics & reproductive medicine ,Dose-Response Relationship, Drug ,business.industry ,Cesarean Section ,Headache ,Pregnancy Outcome ,Obstetrics and Gynecology ,Arrhythmias, Cardiac ,medicine.disease ,female genital diseases and pregnancy complications ,Treatment Outcome ,embryonic structures ,Pediatrics, Perinatology and Child Health ,Female ,business ,030217 neurology & neurosurgery ,medicine.drug - Abstract
Purpose: The aim of this study is to evaluate the safety of clinical usage of tadalafil in women with preeclampsia.Materials and methods: Maternal, fetal, and neonatal adverse events were closely e...
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- 2018
48. Cardiac function and tadalafil used for treating fetal growth restriction in pregnant women without cardiovascular disease
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Shintaro Maki, Makoto Tsuji, Michiko Kubo, Tomoaki Ikeda, Shoichi Magawa, Takashi Umekawa, Fumi Hatano, Yuki Kamimoto, Kayo Tanaka, Kazuhiro Osato, Masafumi Nii, and Hiroaki Tanaka
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Cardiac function curve ,Adult ,medicine.medical_specialty ,Vasodilator Agents ,Diastole ,Disease ,Tadalafil ,03 medical and health sciences ,0302 clinical medicine ,Pregnancy ,Internal medicine ,Heart rate ,medicine ,Fetal growth ,Humans ,030219 obstetrics & reproductive medicine ,Fetal Growth Retardation ,business.industry ,Obstetrics and Gynecology ,Heart ,Blood pressure ,030220 oncology & carcinogenesis ,Pediatrics, Perinatology and Child Health ,Cardiology ,Female ,business ,medicine.drug - Abstract
Background: The aim of the present study was to evaluate tadalafil for the treatment of fetal growth restriction (FGR) and the cardiac function in pregnant women without cardiovascular disease who used tadalafil for this reason.Materials and methods: We examined nine pregnant women without cardiovascular disease who were using tadalafil to treat FGR. Maternal heart rate, systolic blood pressure (BP), and echocardiographic findings were assessed before and after tadalafil use.Results: Diastolic BP was lower after compared to that before using tadalafil, but the difference was not significant. Echocardiographic findings were not significantly different before and after tadalafil use.Conclusions: Tadalafil did not adversely affect pregnant women without cardiovascular disease and was considered acceptable for use since it did not affect the mother’s cardiac function.
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- 2018
49. Tadalafil Treatment for Fetus with Early-Onset Growth Restriction (TADAFER II): A Multicenter, Phase II Clinical Trial
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Shintaro Maki, Yuki Nishimura, Akihiko Sekizawa, Tadashi Kimura, Masafumi Nii, Toru Ogura, Hiroaki Tanaka, Kayo Tanaka, Michiko Kaneda, Tomomi Kotani, Masayuki Endoh, and Tomoaki Ikeda
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Clinical trial ,medicine.medical_specialty ,Fetus ,Growth restriction ,business.industry ,Urology ,Medicine ,business ,Tadalafil ,Early onset ,medicine.drug - Published
- 2018
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50. Management of pregnancy complicated with intracranial arteriovenous malformation
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Shinji, Katsuragi, Jun, Yoshimatsu, Hiroaki, Tanaka, Kayo, Tanaka, Masafumi, Nii, Takekazu, Miyoshi, Reiko, Neki, Kazunori, Toyoda, Kazuyuki, Nagatsuka, Jun C, Takahashi, Kenji, Fukuda, Eika, Hamano, Tetsu, Satow, Susumu, Miyamoto, Koji, Iihara, and Tomoaki, Ikeda
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Abortion, Spontaneous ,Adult ,Intracranial Arteriovenous Malformations ,Rupture, Spontaneous ,Pregnancy ,Arteriovenous Fistula ,Pregnancy Complications, Cardiovascular ,Infant, Newborn ,Humans ,Female ,Live Birth ,Retrospective Studies - Abstract
To clarify the perinatal outcomes in pregnancy complicated with intracranial arteriovenous malformation (i-AVM).A retrospective study was performed in 36 pregnancies complicated by i-AVM from 1981 to 2013 at one institution.In total, 6 women miscarried, and 30 had live births. The median (range) gestational age at delivery was 38 (24-40) weeks; 11 cases experienced initial i-AVM rupture during pregnancy (first, second and third trimester: 18%, 64% and 18%, respectively). At onset, 4 cases had a Glasgow Coma Scale ≤10, 10 cases needed emergency maternal transport, 4 underwent neurosurgery with the fetus in utero and 4 had termination of pregnancy in the second trimester for emergent treatment for i-AVM. Two cases delivered vaginally. Another 25 cases had already been diagnosed as i-AVM at conception. Of these, as an indication for epidural birth, 18 cases had either residual lesion of i-AVM or neurological symptoms, although 18 cases had received treatments of i-AVM before conception. Without rupture of i-AVM and worsening of symptoms, 15 cases succeeded in epidural birth. One case was delivered by cesarean section for residual i-AVM with indication of treatment. Another case who had refused treatment of i-AVM experienced rupture of i-AVM 1 year after delivery.Most of the cases with residual i-AVM lesion and neurological symptoms could deliver vaginally without worsening of symptoms. However, pregnancy with i-AVM can be complicated by rupture of i-AVM. In cases with a residual lesion with indication of treatment and rupture of i-AVM during pregnancy, meticulous care is required during pregnancy and after delivery.
- Published
- 2017
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