139 results on '"Yuasa, T"'
Search Results
2. [Adult T-cell leukemia/lymphoma with multiple intracranial masses and CMV and HHV-6 reactivation at initial presentation].
- Author
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Hori T, Yasui S, Hosoki M, Yamagami H, Otoda T, Yuasa T, Aihara KI, Takishita M, Abe M, and Nakamura S
- Subjects
- Male, Adult, Humans, Middle Aged, Leukemia-Lymphoma, Adult T-Cell drug therapy, Herpesvirus 6, Human, Human T-lymphotropic virus 1 genetics, Lymphoma, Cytomegalovirus Infections
- Abstract
A 55-year-old male was referred to our hospital after complaining of a sore throat for a month. Physical examination revealed a disturbance in consciousness, nuchal rigidity, painful multiple ulcers in the oral cavity, and erythema, the size of rice grains on the body. Hematological examination showed the following results: white blood cells, 7,910/µl (abnormal lymphocytes 2%), LDH, 203 U/l, corrected calcium, 11.2 mg/dl, soluble IL-2 receptor, 11,800 U/ml, and cytomegalovirus antigenemia assay (C10, C11) 43/49. Abnormal lymphocytes (CD4
+ CD25+ ) were discovered in the peripheral blood, bone marrow, and skin samples. Southern blotting of peripheral blood revealed monoclonal integration of human T-cell leukemia virus type 1 (HTLV-1) provirus DNA; and consequently, he was diagnosed with adult T-cell leukemia/lymphoma (ATLL). Multiple tumors with ringed contrast effect were observed in the brain parenchyma using contrast-enhanced computed tomography. The cell number in the cerebrospinal fluid was 1,320/mm3 (ATLL cells were 79% in flow cytometry), and the protein level was 244 mg/dl; moreover, the examination revealed a positive result for human herpesvirus 6 DNA. Despite herpesvirus genus treatment and modified LSG15 therapy combined with intrathecal chemotherapy, the patient became comatose and died on day 21 of hospitalization. A better understanding of the pathogenesis of ATLL, and the involvement with the central nervous system is needed along with the development of standard treatment.- Published
- 2023
- Full Text
- View/download PDF
3. [Total Arch Replacement with Frozen Elephant Trunk for Treatment of Traumatic Aortic Injury with Stanford Type A Aortic Dissection].
- Author
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Horiuchi K, Sakurai Y, Nakata S, Komoda S, Mizutani S, and Yuasa T
- Subjects
- Aged, 80 and over, Aorta, Aorta, Thoracic, Blood Vessel Prosthesis, Female, Humans, Stents, Treatment Outcome, Aortic Dissection surgery, Aortic Aneurysm, Thoracic, Blood Vessel Prosthesis Implantation
- Abstract
An 83-year-old woman was injured in a traffic accident. Enhanced computed tomography (CT) showed aortic injury on the isthmus, Stanford type A aortic dissection and intracranial hemorrhage. Neurological deficit was not noted. We immediately started to lower the blood pressure, and her hemodynamic status remained stable. Although intracranial bleeding had not worsened on the next day, a false lumen of the aortic arch was newly enhanced on CT. Emergency total arch replacement with frozen elephant trunk was performed under deep hypothermia and selective cerebral perfusion. Intraoperative angiography showed no endoleak at the descending aorta. Postoperative course was uneventful, and the patient was discharged on the 21st postoperative day. This procedure is useful for aortic injury involving the ascending aorta and the arch.
- Published
- 2020
4. [Coronary Artery Bypass Grafting complicated with sternocostoclavicular hyperostosis;Report of a Case].
- Author
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Horiuchi K, Nakata S, Komoda S, and Yuasa T
- Subjects
- Aged, Coronary Artery Bypass, Humans, Male, Saphenous Vein, Coronary Artery Disease, Hyperostosis, Sternocostoclavicular, Mammary Arteries
- Abstract
The patient was 72-year-old man, who had old myocardial infarction, diabetes mellitus, dyslipidemia, hypertension and chronic obstructive pulmonary disease. He was complicated with congestive heart failure, and multi-vessel coronary artery disease and moderate aortic valve stenosis and regurgitation were diagnosed. We performed coronary artery bypass grafting(CABG) and aortic valve replacement. Intraoperative findings showed severe adhesions and tissue fibrosis around sternum. It was very difficult to dissect adhesions around left internal thoracic artery (LITA). LITA was injured, and great saphenous vein was anastomosed to left anterior descending coronary artery. Sternocostoclavicular hyperostosis was diagnosed on computed tomography( CT) findings such as remarkably thickened ster-num and adhesion of sternoclavicular joint. Postoperative course was complicated by osteomyelysis and necrosis of left side skin incision, for which omentopexy was needed. Sternocostoclavicular hyperostosis is rare disease, but we should recognize in preoperative evaluation.
- Published
- 2019
5. [Safety Profile of the Combination of Prophylactic Pegfilgrastim and Cabazitaxel for Japanese Patients with Castration Resistant Prostate Cancer].
- Author
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Azuma K, Kawakami K, Yuasa T, Sugisaki T, Hashimoto K, Aoyama T, Suzuki K, Yonese J, and Hama T
- Subjects
- Febrile Neutropenia chemically induced, Humans, Male, Retrospective Studies, Febrile Neutropenia prevention & control, Filgrastim therapeutic use, Polyethylene Glycols therapeutic use, Prostatic Neoplasms, Castration-Resistant drug therapy, Taxoids adverse effects, Taxoids therapeutic use
- Abstract
Cabazitaxel, which is a novel semi-synthetic anti-cancerous agent, is newly approved for the treatment of metastatic castration resistant prostate cancer(CRPC). The main dose-limiting toxicity is considered to be febrile neutropenia(FN). In this study, we retrospectively investigated the safety profiles of Japanese patients during cabazitaxel therapy. From September 2014 to August 2016, 17 patients initiated receiving cabazitaxel therapy in our institution. Prophylactically, pegfilgrastim was administered to all patients. Among 17 patients, 5 patients(29.4%)developed FN. Four of these patients(80%)developed FN in the first cycle and could continue the cabazitaxel therapy with dose modification, whereas 1 patient(20%)developed FN leading to septic shock in the 8th cycle. Although he recovered after appropriate medical treatment, he discontinued the cabazitaxel therapy. Regarding non-hematological adverse events, no unknown adverse events were observed. The most frequently observed adverse event was back pain(n=4, 23.5%). There was no influence on the continuation of treatment. Treatment discontinuation due to adverse events was observed in 1 patient(5.9%). Due to the prophylactic pegfilgrastim in combination, the occurrence rate of FN seemed to decrease. However, we must remember that FN is still frequently expressed even under the prophylactic pegfilgrastim.
- Published
- 2018
6. [Cardiac Surgery in Two Patients with Parkinson's Disease who were Using Deep Brain Stimulation Devices].
- Author
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Horiuchi K, Nakata S, Komoda S, and Yuasa T
- Subjects
- Aged, Female, Humans, Male, Middle Aged, Myocardial Infarction complications, Myocardial Infarction surgery, Parkinson Disease complications, Coronary Artery Bypass, Deep Brain Stimulation, Parkinson Disease therapy, Ventricular Septal Rupture surgery
- Abstract
For the treatment of Parkinson's disease, deep brain stimulation( DBS) devices are implanted for the control of motor symptoms including tremor. We performed cardiac surgery in 2 patients with Parkinson's disease who were using DBS devices. Coronary artery bypass was performed in one patient, and closure of ventricular septal perforation after acute myocardial infarction was performed in the other. There is a risk of injury and electromagnetic interference of DBS devices. No device failure or aggravation of Parkinson's symptom was observed in these cases. In many cases of cardiac surgery, various devices are concomitantly used, and the potential interference with the devices should be carefully examined in perioperative management.
- Published
- 2015
7. [Recent progress in study of idiopathic normal pressure hydrocephalus].
- Author
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Kato T and Yuasa T
- Subjects
- Biomarkers cerebrospinal fluid, Humans, Hydrocephalus, Normal Pressure physiopathology, Hydrocephalus, Normal Pressure diagnosis, Magnetic Resonance Imaging
- Published
- 2010
8. [Glycan biomaker in CSF].
- Author
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Hashimoto Y, Futakawa S, Miyajima M, Kitazume S, Nara K, Shirotani K, Kuno A, Ito H, Honda T, Furukawa K, Tasaki K, Arai H, Yuasa T, Abe M, Narimatsu H, and Arai H
- Subjects
- Biomarkers cerebrospinal fluid, Diagnosis, Differential, Humans, Hydrocephalus, Normal Pressure cerebrospinal fluid, Predictive Value of Tests, Sensitivity and Specificity, Glycoproteins cerebrospinal fluid, Hydrocephalus, Normal Pressure diagnosis
- Published
- 2010
- Full Text
- View/download PDF
9. [Limbic encephalitis--history,symptoms,and the latest classification].
- Author
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Yuasa T and Fujita K
- Subjects
- Autoantibodies, Autoimmune Diseases complications, History, 20th Century, Humans, Limbic System anatomy & histology, Limbic System physiology, Receptors, N-Methyl-D-Aspartate immunology, Virus Diseases complications, Limbic Encephalitis classification, Limbic Encephalitis etiology, Limbic Encephalitis history, Limbic Encephalitis physiopathology
- Abstract
The concept of limbic encephalitis has changed over time. Since the introduction of "limbic encephalitis" (LE) in 1968, LE was thought to almost always be associated with carcinoma; this belief led to the coining of the term "paraneoplastic limbic encephalitis" (PLE). In the 1990s, antineuronal antibodies, including anti-Hu and anti-Ta/Ma2, were detected; this supported the hypothesis of an autoimmune mechanism for PLE. The prognosis of patients with PLE was, however, poor. Since 2001, there have been reports of patients with LE exhibiting antibodies to the voltage-gated potassium channel; this observation is intriguing because in such cases the encephalitis was usually independent of carcinoma, and its clinical course was often reversible. Since the 1990s, cases of non-herpetic acute limbic encephalitis have been reported in Japan. In some of these cases, an autoantibody to GluRepsilon2 (NR2B) has been detected; GluRepsilon2 is a subunit of the N-methyl-D-aspartate (NMDA) glutamate receptor found in the limbic forebrain. A postulated pathophysiologic role of this antibody led to the concept of autoantibody-mediated acute reversible LE (AMED-ARLE). In 2007, some patients with ovarian teratoma developed encephalitis and exhibited antibodies to the NMDA receptor; this antibody is thought to recognize NR1/NR2 heteromers. Later, anti-NMDA receptor antibodies were also detected in some Japanese patients who had been previously diagnosed with juvenile acute non-herpetic encephalitis. Currently, limbic encephalitis is categorized into 3 groups: limbic encephalitis caused by virus infection, autoantibody-mediated limbic encephalitis (AMLE), and limbic encephalitis with autoimmune disease. In AMLE, antibodies to cytoplasmic antigens cause classical PLE (type I). In contrast, antibodies to cell membrane antigens often cause reversible limbic encephalitis in patients with (PLE type II) or without tumors (AMED-ARLE).
- Published
- 2010
10. [Clinical standard of neurosurgical disorder (8). Amnesia].
- Author
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Honda K and Yuasa T
- Subjects
- Alzheimer Disease diagnosis, Humans, Amnesia diagnosis, Cognition Disorders diagnosis
- Published
- 2009
11. [Combination therapy consisting of gemcitabine, docetaxel and carboplatin as a second-line chemotherapy for patients with MVAC-treated metastatic urothelial carcinoma].
- Author
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Inoue T, Obara T, Saito M, Kumazawa T, Narita S, Horikawa Y, Yuasa T, Tsuchiya N, Satoh S, and Habuchi T
- Subjects
- Antineoplastic Combined Chemotherapy Protocols adverse effects, Carboplatin administration & dosage, Carcinoma, Transitional Cell mortality, Carcinoma, Transitional Cell pathology, Cisplatin, Deoxycytidine administration & dosage, Deoxycytidine analogs & derivatives, Disease-Free Survival, Docetaxel, Doxorubicin, Drug Administration Schedule, Hematologic Diseases chemically induced, Humans, Methotrexate, Neoplasm Metastasis, Retrospective Studies, Taxoids administration & dosage, Urologic Neoplasms mortality, Urologic Neoplasms pathology, Vinblastine, Gemcitabine, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Carcinoma, Transitional Cell drug therapy, Urologic Neoplasms drug therapy
- Abstract
From 2001 to 2006, 11 patients with MVAC-treated metastatic urothelial carcinoma received as a second-line therapy GDC therapy consisting of gemcitabine (1,000 mg/m2) on day land 8, docetaxel (80 mg/m2) on day 1 and carboplatin (AUC 5) on day 1 in each 21-day cycle. The 11 patients received a total of 42 cycles. The median progression-free survival and the median overall survival were 3 months (range 0-51) and 10 months (range 2-51), respectively. The median overall survival from diagnosis of the metastasis was 13.0 months (range 7-55). Complete response and partial response rates were 1/11 (9%) and 5/11 (45%), respectively. One- and two-year survival rates were 36 and 9%, respectively. Grade 3 or 4 hematologic toxicity included neutropenia (69.0%), thrombocytopenia (47.6%) and anemia (45.2%). Non-hematologic toxicity of grade 3 or 4 consisted mainly of diarrhea (23.8%) and anorexia (21.4%). GDC regimen as a second-line chemotherapy was effective in 54% of patients with MVAC-treated metastatic urothelial carcinoma, although the high incidence of hematologic toxicities and short period of progression-free survival remain to be major problems.
- Published
- 2008
12. [A case of ruptured intra-renal aneurysm caused by renal allograft biopsy].
- Author
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Inoue T, Satoh S, Saito M, Numakura K, Kumazawa T, Yuasa T, Matuura S, Tsuchiya N, and Habuchi T
- Subjects
- Acute Kidney Injury etiology, Acute Kidney Injury therapy, Aneurysm therapy, Drainage, Embolization, Therapeutic, Humans, Kidney Diseases therapy, Male, Middle Aged, Postoperative Complications, Rupture, Spontaneous, Transplantation, Homologous, Aneurysm etiology, Biopsy, Needle adverse effects, Kidney Diseases etiology, Kidney Transplantation
- Abstract
A 57-year-old male with anuria presented to our emergency room 48 days after living renal transplantation. The diagnosis of acute renal failure due to subcapsular hematoma of transplanted kidney following rupture of intra-renal aneurysm was made based on ultrasonographic findings. He underwent selective arterial coil embolization and open drainage of renal subcapsular hematoma. Diuresis was achieved immediately and the graft function recovered to the baseline level 7 days after drainage. Based on the site of aneurysm, needle biopsies during renal transplant surgery might have caused the aneurysm.
- Published
- 2008
13. [Reassessment of T classification system cutoff value for renal cell carcinoma].
- Author
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Obara T, Matsuura S, Inoue T, Kumazawa T, Abe A, Horikawa Y, Togashi H, Yuasa T, Tsuchiya N, Satoh S, Sato K, and Habuchi T
- Subjects
- Adult, Aged, Aged, 80 and over, Carcinoma, Renal Cell classification, Carcinoma, Renal Cell mortality, Female, Humans, Kidney Neoplasms classification, Kidney Neoplasms mortality, Male, Middle Aged, Nephrectomy, Prognosis, Risk Assessment, Survival Rate, Carcinoma, Renal Cell pathology, Kidney Neoplasms pathology
- Abstract
Purpose: The 1997 T staging classification for renal cell carcinoma (RCC) defined T1 as tumors measuring up to 7 cm in size and T1 is subdivided into T1a and T1b with a 4 cm cutoff value in the 2002 TMN classification. We evaluated the validity of these cutoff values by assessing the cancer-specific survival of patients with non-metastatic RCC according to a series of alternative size cutoff values. In addition, we calculated how these size cutoffs affected the disease specific survival rates., Materials and Methods: A database containing the records of 200 patients with RCC who underwent open radical nephrectomy for N0M0 disease between 1985 January and 2004 January was evaluated. Tumors were stratified by cutoff values ranging from 3 to 9 cm with the 1 cm increments in order to evaluate whether the 7 cm cutoff value is appropriate. Next, T1 RCC were stratified by cutoff values ranging from 3 to 6 cm with the 1 cm increment in order to verify whether the 4 cm cutoff is appropriate. Lastly, tumors over 7 cm diameter were stratified by cutoff values ranging from 9 to 14 cm with the 1 cm increments in order to verify whether the present T2-3a categories could be divided according to tumor size., Results: As for the T1-2 classification, a cutoff value at 7 cm or 8 cm shared the greatest prognostic power. Although there was no significant difference in T1a/T1b subclassification, a 4 cm or 5 cm cutoff value resulted in a greatest separation of survival curves for T1a and T1b. As for tumors from 9-14 cm in diameter, only a 13 cm cutoff value provided a significant difference in survival., Conclusions: Our results indicate that the present 7 cm cutoff value in the TMN system is valid in terms of prognostic value. The 4 cm cutoff value may not reflect the survival when total nephrectomy is considered, thus indicating that tumors at 4 cm cutoff value may be valid when nephron sparing surgery is considered. The 13 cm cutoff value seems to be most appropriate in N0M0 tumors with over 7 cm in diameter.
- Published
- 2007
- Full Text
- View/download PDF
14. [Case of testicular venous hemangioma].
- Author
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Numakura K, Tsuchiya N, Inoue T, Yuasa T, Matsuura S, Satoh S, and Habuchi T
- Subjects
- Aged, Hemangioma pathology, Hemangioma surgery, Humans, Male, Orchiectomy, Testicular Neoplasms pathology, Testicular Neoplasms surgery, Testis pathology, Hemangioma diagnosis, Testicular Neoplasms diagnosis
- Abstract
A case of a testicular venous hemangioma is presented. A 65-year-old man complained of left testicular swelling. Physical examination and ultrasonography revealed a 2.0 x 1.6 x 1.5 cm roundish, well demarcated isoechoic elastic hard tumor in the left testis. No other abnormal findings including tumor markers were observed. Since preoperative examination did not rule out malignancy, we performed left high orchiectomy. Pathological diagnosis was a venous hemangioma of the left testis. Venous hemangioma is a rare entity among the testicular solid lesions.
- Published
- 2007
15. [Severe aortic regurgitation with mild ascending aortic dilatation].
- Author
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Yuasa T, Otsuji Y, Takasaki K, Kisanuki A, Sakata R, and Tei C
- Subjects
- Aorta surgery, Aortic Valve surgery, Aortic Valve Insufficiency complications, Aortic Valve Insufficiency surgery, Dilatation, Pathologic complications, Dilatation, Pathologic diagnostic imaging, Dilatation, Pathologic prevention & control, Disease Progression, Echocardiography, Heart Valve Prosthesis Implantation, Humans, Male, Middle Aged, Severity of Illness Index, Vascular Surgical Procedures, Aorta pathology, Aortic Valve Insufficiency diagnostic imaging
- Published
- 2006
16. [Limbic encephalitis].
- Author
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Nemoto H and Yuasa T
- Subjects
- Humans, Limbic Encephalitis diagnosis, Limbic Encephalitis drug therapy
- Published
- 2006
- Full Text
- View/download PDF
17. [Mechanism of cartilage matrix remodeling by Wnt].
- Author
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Yuasa T and Iwamoto ME
- Subjects
- Animals, Chondrogenesis physiology, Mice, Cartilage physiology, Wnt Proteins physiology
- Abstract
Wnt proteins play central roles in a variety of developmental processes and regulate cell differentiation, cell fate and cell proliferation. It has been also demonstrated that Wnt proteins profoundly participate in cartilage development. Interestingly, activation of Wnt/beta-catenin signaling in chondrocytes induces a profile of matrix degradation enzymes quite similar to that of cartilage matrix degradation such as osteoarthritis and rheumatoid arthritis. In this review we discuss the involvement of Wnt/beta-catenin signaling in pathological cartilage matrix degradation.
- Published
- 2006
- Full Text
- View/download PDF
18. [32 year old male case of paraneoplastic non-herpetic limbic encephalitis with thymoma].
- Author
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Kuga A, Uesaka Y, Kunimoto M, Nagasaka S, Itami J, Iwamura A, and Yuasa T
- Subjects
- Adult, Humans, Limbic Encephalitis therapy, Male, Paraneoplastic Syndromes therapy, Limbic Encephalitis diagnosis, Paraneoplastic Syndromes diagnosis, Thymoma complications, Thymus Neoplasms complications
- Published
- 2005
- Full Text
- View/download PDF
19. [Traumatic aortic regurgitation complicating chronic bronchitis; report of a case].
- Author
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Yuasa T, Kawaguchi L, Oohara Y, Yasuura K, Tanaka T, and Asaoka M
- Subjects
- Accidents, Home, Aortic Valve surgery, Aortic Valve Insufficiency etiology, Chronic Disease, Humans, Male, Middle Aged, Rib Fractures etiology, Shoulder Fractures etiology, Aortic Valve Insufficiency surgery, Bronchitis complications, Heart Valve Prosthesis Implantation, Thoracic Injuries etiology, Wounds, Nonpenetrating etiology
- Abstract
A 61-year-old man with diabetes mellitus and chronic bronchitis was brought to the hospital after falling from a roof accidentally. He received blunt trauma to the left chest wall including left rib fractures, pneumothorax, hemothorax and a fracture of left scapula. After endotracheal intubation and chest drainage, he was transferred to the intensive care unit. Sixteen days later, congestive heart failure appeared. Echocardiography showed a severe aortic valve regurgitation with a prolapse of non-coronary cusp. Eight months after the injury, his heart failure deteriorated. He underwent aortic valve replacement with a mechanical prosthesis. Upon examining the aortic valve, we noted 2 perforations in the non-coronary cusp of the aortic valve. Postoperative course was uneventful.
- Published
- 2005
20. [Having trouble with pressure ulcers care?].
- Author
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Mizuno M, Noda Y, Nohara Y, Fujii K, Sato N, Renda A, Yuasa T, Muramatsu S, and Furuta K
- Subjects
- Bandages, Humans, Humidity, Occlusive Dressings, Ointments supply & distribution, Ointments therapeutic use, Pressure Ulcer economics, Community Networks, Community Pharmacy Services, Pressure Ulcer therapy, Skin Care instrumentation, Skin Care methods
- Abstract
Since 1997, we, the community pharmacists, have established this society, Aichi Prefecture Society for the Study of Pressure Ulcers Care, in order to furnish drug information about pressure ulcers care. Moist atmosphere is required for the healing of pressure ulcers. The moist environment that could be regulated depends on the physicochemical property of ointment bases. Therefore, ointment should reasonably be chosen to adjust the moisture. Since 2000, we have been committed to providing pharmacists, who work on home care, with a booklet to instruct how to choose ointments for pressure ulcers treatment. In 2002, when the Aichi pharmaceutical association held a training conference held at various hospitals using the booklet as a teaching material, hospital pharmacists cooperated by making a field study trip to observe pressure ulcers treatments. Nowadays researchers at pharmaceutical colleges have also cooperated in studying the efficacy and economical effect of the method of blending different ointments to improve the healing process of pressure ulcers.
- Published
- 2004
21. [Preparation of a manual treatment of pressure ulcers which draws attention to moisture of the affected part].
- Author
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Nohara Y, Mizuno M, Kamei H, Yamadaz M, Fujii K, Satoh N, Nitao N, Renda A, Yuasa T, Hamazaki M, Shimauchi A, Hirai Y, Yasui H, Muramatsu S, Noda Y, and Furuta K
- Subjects
- Humans, Humidity, Ointments classification, Manuals as Topic, Pressure Ulcer drug therapy, Skin Care
- Abstract
As for pressure ulcers care, prevention is the most important approach. However, pressure ulcers, might develop despite enough care, depending on each person's physical condition. As for the treatment of pressure ulcers, maintenance of a moderately moist environment (60-70%) is quite important. We propose the use of ointment to control the moisture of a pressure ulcer environment. One ointment base absorbs moisture, while another provides moisture. We have prepared a manual that allows the user to select the medicine according to the degree of moisture of the affected part. When the moisture cannot be regulated with one ointment, it can be adjusted by mixing two or more ointments. In choosing a drug for external use, it is important to pay attention not only to the effect of the main ingredient but also to the physicochemical properties of the ointment base that serves as vehicle for that active component.
- Published
- 2003
22. [Classification of hereditary spastic paraplegia (HSP)].
- Author
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Utsumi H and Yuasa T
- Subjects
- Adenosine Triphosphatases genetics, Cell Cycle Proteins, GTP Phosphohydrolases genetics, GTP-Binding Proteins, Genes, Dominant, Genes, Recessive, Humans, Membrane Proteins, Proteins genetics, Spastic Paraplegia, Hereditary genetics, Spastic Paraplegia, Hereditary physiopathology, Spastin, Spastic Paraplegia, Hereditary classification
- Published
- 2003
23. [Diagnosis and therapy for patients with Parkinson's disease (discussion)].
- Author
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Okamoto K, Kondo T, Yuasa T, Kita K, and Hirato M
- Subjects
- Autonomic Nervous System Diseases etiology, Disease Progression, Dopamine Agonists therapeutic use, Gait Disorders, Neurologic etiology, Humans, Levodopa adverse effects, Levodopa therapeutic use, Life Style, Low Back Pain etiology, Mental Disorders etiology, Neurosurgical Procedures, Parkinson Disease diagnosis, Parkinson Disease physiopathology, Parkinson Disease rehabilitation, Stereotaxic Techniques, Parkinson Disease therapy
- Published
- 2003
24. [Sequential bypass grafting with arterial grafts can be functioned? Assessment of evaluation for function of sequential bypass grafting from theoretical model].
- Author
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Yasuura K, Iwatsuka Y, Yuasa T, Oohara Y, Kawaguchi L, Matsuura A, and Okamoto H
- Subjects
- Arteries anatomy & histology, Arteries physiology, Arteries transplantation, Coronary Vessels pathology, Coronary Vessels physiopathology, Humans, Models, Theoretical, Coronary Artery Bypass methods, Coronary Circulation
- Abstract
As total arterial revascularization in coronary artery bypass grafting (CABG) has been recommended, a sequential bypass technique using arterial grafts has been induced. We evaluate whether a sequential bypass graft can be functioned or not by using a simple simulation model for coronary circulation analogous to the electrical circuit based on Ohm law. The ratio of flow between graft and native coronary artery was determined by the severity of stenosis in the bypassed vessels and the graft diameter. In selection for sequential bypass technique, these factors should be taken into consideration.
- Published
- 2003
25. [A case of cerebellar degeneration with schizophrenia-like psychosis, severe iron deficiency, hypoceruloplasminemia and abnormal electroretinography: a new syndrome?].
- Author
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Kimura A, Yoshino H, and Yuasa T
- Subjects
- Adult, Humans, Male, Retinal Diseases complications, Retinal Diseases diagnosis, Spinocerebellar Degenerations diagnosis, Syndrome, Ceruloplasmin deficiency, Electroretinography, Iron Deficiencies, Schizophrenia etiology, Spinocerebellar Degenerations complications
- Abstract
A 33-year-old male patient began to develop schizophrenia-like symptoms and slowly progressive cerebellar ataxia. He was 170 cm tall and he had mild frontal baldness. Psychiatrically he was aconative, only willing to do nothing all day long after admission. He had neither hallucinations nor delusions, and his mental acuity was normal. Neurological examination revealed positive cerebellar signs including clumsiness in F-N-T and K-H-T and dysdiadochokinesis. He could neither stand up nor walk because of ataxia. The brain MRI showed severe cerebellar atrophy with normal basal ganglia. His EEG and the value of NCV were within normal range, whereas electroretinography showed a notable abnormality, pointing to the extremely small b-wave, resulting in a negative shape of the ERG. Although he was eating sufficiently, the level of serum iron and ferritin remained constantly low. The serum copper level was within normal range, whereas the serum ceruloplasmin level was mildly decreased. A hepatic biopsy indicated no accumulation of copper or iron. This case suggests the importance of the investigation of the serum iron and ceruloplasmin levels in patients who have cerebellar degeneration with psychosis.
- Published
- 2001
26. [Renal cell carcinoma in acquired cystic disease of the kidney manifested by spontaneous renal hemorrhage].
- Author
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Nishikawa Z, Kataoka A, Yuasa T, Okamoto K, Wakabayashi Y, Yoshiki T, and Okada Y
- Subjects
- Aged, Humans, Male, Carcinoma, Renal Cell complications, Hemorrhage etiology, Kidney Diseases etiology, Kidney Diseases, Cystic complications, Kidney Neoplasms complications
- Abstract
Acquired cystic disease of the kidney (ACDK) is a common phenomenon in long-term adult dialysis patients with end-stage renal disease. Renal hemorrhage and neoplastic transformation of the cyst are two major complications of this entity and these two can occur independently. Here we describe a 65-year-old man with a history of hemodialysis-dependent end-stage renal failure for 12 years presented with macroscopic hematuria and right flank pain. Investigations revealed right massive perirenal and subcapsular hematoma with ACDK. The hemorrhagic state required nephrectomy of the right kidney. Histological study showed ACDK with massive subcapsular and perinephric hematoma containing minimal clear cell carcinoma region(0.5 cm in diameter). Although a causal relationship between renal hemorrhage and renal cell carcinoma in this patient was unproven, the present case suggests radical surgery can be a recommendable treatment modality of hemorrhagic ACDK.
- Published
- 2000
- Full Text
- View/download PDF
27. [Therapeutic strategies for Parkinson's disease and guidelines for the 21st century].
- Author
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Yuasa T
- Subjects
- Humans, Forecasting, Parkinson Disease etiology, Parkinson Disease therapy, Therapeutics trends
- Abstract
Parkinson's disease(PD) is one of the most common neurodegenerative disorders, characterized clinically by resting tremor, rigidity and akinesia. The pathological hallmarks of PD is the loss of neurons of the substantia nigra and the existence of Lewy bodies. Among multifactorial theories of gene-environment interaction supporting the pathogenesis of this disease, recent topics focus on the findings of single gene mutations found in several forms of familial PDs. The mutations of the gene encode the protein alpha-synuclein, UCH-L1 and Parkin located on the chromosomes 4q21-23, 4p and 6p25.2-27 respectively. Molecular pathology and histochemical studies reveal that one of these proteins is closely associated with parts of Lewy bodies, or has the function of the ubiqitin system of protein metabolism. Although the typical PD shows good response to levodopa therapy, its side effects, which arise after 5 to 10 years of treatment, rather narrow the therapeutic window of PD. As a result we must make available various new therapeutic tools in order to prevent disability and get a favourable QOL in the PD patient's life span. The various tools adopted here include surgical treatments, transcraial magnetic stimulation methods, nonconvulsive electric stimulation therapy, and the design of new drugs. In this issue the frontier of PD therapy and research will be reviewed and new promising insights and guidelines for the current century will be discussed.
- Published
- 2000
28. [Parkinson's disease and depression].
- Author
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Kurokawa K and Yuasa T
- Subjects
- Depression etiology, Depression psychology, Humans, Magnetics therapeutic use, Physical Stimulation, Physical Therapy Modalities methods, Depression therapy, Electroconvulsive Therapy methods, Parkinson Disease complications
- Abstract
Up to 40% of cases of Parkinson's disease are associated with the occurrence of depression. The symptoms of the patients' depressive state may be factors such as significant weight change, insomnia or hypersomnia, psychomotor retardation, fatigue or loss of energy, feelings of worthlessness or inappropriate guilt, decreased concentration and indecisiveness, and recurrent thoughts of death or suicidal ideation. Given these conditions, drugs prove ineffective in many cases. Electroconvulsive therapy (ECT) has been reported to be beneficial in cases of drug-resistant depression. ECT has also been applied to Parkinsonian patients with depression and found to be effective with both depression and the Parkinsonian symptom. Transcranial magnetic stimulation(TMS) has recently been investigated for application in cases of depression and has become known as a valuable tool for depression therapy. TMS is easily implemented even in outpatient therapy. TMS will make a great contribution to the therapy of depression with Parkinson's disease.
- Published
- 2000
29. [Clinical criteria for the diagnosis for PSP].
- Author
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Nishimiya J and Yuasa T
- Subjects
- Humans, Magnetic Resonance Imaging, Reference Standards, Tomography, Emission-Computed, Single-Photon, Supranuclear Palsy, Progressive diagnosis
- Abstract
In attempts to improve the accuracy of its clinical identification, investigators have proposed numerous diagnostic criteria for progressive supranuclear palsy(PSP). We compared with six different sets of previously published criteria for the clinical diagnosis of PSP. Among of them, the NINDS-SPSP criteria are a most prominent diagnostic standard. But in the clinical area, the NINDS-SPSP criteria have some weak point. We plan to make up this point for using the neuroimaging techniques.
- Published
- 2000
30. [Evaluation of 24-hour home help services in a community by the focus group interview method].
- Author
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Yuasa T, Maeda A, and Motohashi Y
- Subjects
- Focus Groups, Humans, Social Welfare, Community Networks, Health Services for the Aged standards, Home Care Services standards
- Abstract
The 24-hour home help services that provide day and night care services at home becomes a public health interest in Japan. The purpose of this study was to evaluate the system of 24-hour home help services in a community that has successfully developed it. Participants of this focus group interview were home helpers who were actually engaged in 24-hour home help services in A town of Akita Prefecture. The focus group session was tape-recorded and the tapes were transcribed. The transcripts were evaluated and summarized in order to identify major categories and number of descriptive statements in each category. The results were as follows. First, the home helpers considered that their system of 24-hour home help services could be technically transferred to other communities in Japan. Secondary, the political leadership and the democratic system of community participation were the essential elements for promoting the 24-hour home help services. Thirdly, the regular meetings for discussion about cases and opinion exchanges were required more extensively in the future.
- Published
- 1999
31. [Episodic ataxia type 1].
- Author
-
Yuasa T
- Subjects
- Chromosomes, Human, Pair 12, Diagnosis, Differential, Humans, Mutation, Potassium Channels genetics, Prognosis, Ataxia classification, Ataxia genetics, Periodicity
- Published
- 1999
32. [Friedreich's type of ataxia with hypoalbuminemia and hyperlipidemia (FHH)].
- Author
-
Yuasa T
- Subjects
- Atrophy, Central Nervous System pathology, Child, Preschool, Humans, Infant, Nerve Degeneration, Friedreich Ataxia complications, Friedreich Ataxia physiopathology, Hyperlipidemias complications, Hyperlipidemias physiopathology, Serum Albumin deficiency
- Published
- 1999
33. [Episodic ataxia type 2].
- Author
-
Yuasa T
- Subjects
- Calcium Channels genetics, Chromosomes, Human, Pair 19, Diagnosis, Differential, Humans, Mutation, Prognosis, Ataxia classification, Ataxia genetics, Periodicity
- Published
- 1999
34. [An introduction to spinocerebellar degeneration: special reference to a newly revised classification].
- Author
-
Yuasa T
- Subjects
- Humans, Spinocerebellar Degenerations physiopathology, Spinocerebellar Degenerations classification
- Published
- 1999
35. [Progressive supranuclear palsy (PSP)].
- Author
-
Nishimiya J and Yuasa T
- Subjects
- Diagnosis, Differential, Dopamine Agents therapeutic use, Humans, Levodopa therapeutic use, Magnetic Resonance Imaging, Prognosis, Tomography, Emission-Computed, Single-Photon, Tomography, X-Ray Computed, Supranuclear Palsy, Progressive diagnosis, Supranuclear Palsy, Progressive physiopathology
- Published
- 1999
36. [A case report of epidural abscess due to anaerobic bacteria, producing a mass of gas].
- Author
-
Nakatani S, Hoshi K, Yuasa T, Sato T, and Tauchi T
- Subjects
- Abscess diagnosis, Epidural Space, Female, Gases, Humans, Magnetic Resonance Imaging, Middle Aged, Spinal Diseases diagnosis, Abscess microbiology, Bacteroides Infections, Bacteroides fragilis isolation & purification, Gram-Positive Bacterial Infections, Peptostreptococcus isolation & purification, Spinal Diseases microbiology
- Abstract
A 54-year-old female was admitted to our hospital on May 8, 1996, for evaluation of fever and headache. Her cerebrospinal fluid showed elevation of the cell count and total protein. The thoracic and lumbar MRIs revealed abnormal gas occupying the epidural space at the sacral level, and extended as high as 9th thoracic level. The gas spread inside the iliopsoas and paraspinal muscles. Anaerobic bacteria such as Bacteroides fragilis and Peptostreptococcus productus were cultured from the spinal fluid and Bacteroides was also detected from the epidural tissues obtained during laminectomy. The infectious source was decubitus extending around the sacral bone. The combination therapy of debridement with peroxide, catheter drainage of epidural abscess, intravenous and intrathecal antibiotics, and laminectomy presented her good outcome. This is a rare case of anaerobic bacterial spinal abscess, showing epidural and intramuscular gas as a prominent feature.
- Published
- 1998
37. [Progress of the therapy for virus related neurological disorders].
- Author
-
Harukawa H and Yuasa T
- Subjects
- Humans, Nervous System Diseases therapy, Virus Diseases therapy
- Abstract
In this review of the therapy of infectious diseases and immune mediated nervous system diseases, we summarized the latest reports of antiviral drugs, immunosuppressants, immuno-modulatory and anti-inflammatory agents. Those include, acyclovir, vidarabine for herpes simplex encephalitis, ganciclovir for cytomegaro virus infection, inosine pranobex for SSPE, steroid therapy, interferon, plasma exchange and high-dose intravenous gamma globulin therapy for HTLV-I associated myelopathy, and multiple sclerosis. Diagnostic application of the PCR and the newly developed neuroimaging techniques, like diffusion weighted MRI, high speed MRI, and SPECT, we now being introduced to enable early recognition of viral infection of the CNS. And since speed of spread of HIV infection through the world, we are needed specific treatment for HIV infection, and various studies including genetic therapy is going on today.
- Published
- 1997
38. [The inhibitory effects of Arg-Gly-Asp-Ser on attachment of fibroblasts].
- Author
-
Kawamura T, Nakamura T, Kiritooshi A, Yamamoto R, Sasabe T, Kishida K, and Yuasa T
- Subjects
- Animals, Cells, Cultured, Conjunctiva drug effects, Intraocular Pressure drug effects, Rabbits, Trabeculectomy, Cell Adhesion drug effects, Fibroblasts drug effects, Oligopeptides pharmacology, Platelet Aggregation Inhibitors pharmacology
- Abstract
Trabeculectomy often fails because of scarring of the filtering bleb, which is caused by the proliferation of fibroblasts. In this study, we investigated the inhibitory effect of Arg-Gly-Asp-Ser (RGDS) oligopeptide, a cell binding domain of fibronection molecules, on the attachment of fibroblasts in vitro and on scarring of filtering bleb after trabeculectomy on rabbits' eyes. The following results were obtained. 1. RGDS inhibited the attachment of rabbit conjunctival fibroblasts significantly (p < 0.01) when it was added to the culture medium at final concentrations of 2 and 5 mg/ml. 2. The administration of 0.2 ml of RGDS solution (5 mg/ml) into the filtering bleb 3 days after surgery caused significant reductions of intra ocular pressure compared with the control maintained the bleb more than 13 days whereas the blebs of the control eyes disappeared within 6 days (p < 0.01). 3. No complications were caused on the eyeballs of the rabbits by the administration of RGDS.
- Published
- 1997
39. [Immunohistochemical study of cytokeratin and vimentin expression in mixed type of adenocarcinoma and squamous cell carcinoma].
- Author
-
Yuasa T
- Subjects
- Antibodies, Monoclonal, Female, Humans, Immunohistochemistry, Intermediate Filament Proteins metabolism, Paraffin Embedding, Adenocarcinoma chemistry, Carcinoma, Squamous Cell chemistry, Keratins metabolism, Uterine Cervical Neoplasms chemistry, Vimentin metabolism
- Abstract
To clarify the pattern of cytokeratin and vimentin expression in mixed adenocarcinoma and squamous cell carcinoma of the uterine cervix, twenty-three cases of formalin-fixed paraffin-embedded specimen were examined immunohistochemically using a panel of four different monoclonal anti-cytokeratin antibodies and anti-vimentin antibody. Fifty-seven cases of benign or malignant tissue were selected for controls. The results were summarized as follows. 1) In four cases of co-existing adenocarcinoma and squamous cell carcinoma, their immunostaining patterns were compatible with original histological cell type. 2) In four cases of adenoacanthoma, high molecular weight-cytokeratin (HCK) was positive in each acanthomatous component and only a small part of one adenocarcinomatous component. 3) In twelve cases of cervical adenosquamous carcinoma, HCK were positive in four adenocarcinomatous components. Out of eight cases with non-stained adenocarcinomatous components, six cases showed negativity for HCK even in the squamous cell carcinomatous component. 4) Though vimentin was negative in all cases of mixed type of cervical carcinoma, some cases of mixed type endometrial carcinoma were stained positively for vimentin. It was indicated from our study that adenosquamous carcinoma of the cervix could originate either in reserve cells or columunar epithelium and that vimentin positive cases could originate in the endometorial gland.
- Published
- 1996
40. [Influence of recirculation type blood cardioplegia on perfusion pressure in open heart surgery].
- Author
-
Watanabe T, Murase M, Yasuura K, Matsuura A, Maseki T, Oohara Y, Ito T, Sakai Y, Miyahara K, Yuasa T, Kawaratani Y, and Yamada T
- Subjects
- Aged, Bradykinin blood, Cardiac Surgical Procedures, Cardiopulmonary Bypass, Humans, Intraoperative Period, Male, Middle Aged, Perfusion, Blood Pressure, Heart Arrest, Induced methods
- Abstract
Infusion blood cardioplegia often decreases the perfusion pressure during open heart surgery. The blood level of bradykinin (BK) was measured in both the cardiopulmonary bypass (CPB) and blood cardioplegia circuit. Infusion cardioplegia with recirculation type circuit increased the BK level of cardioplegia and the perfusion pressure decreased abruptly with the increase BK level in the CPB circuit. In the case of single pass type circuit the BK level was not increased either in cardioplegia or CPB and perfusion pressure was not decreased. We concluded that the single pass type of cardioplegia circuit is superior to the recirculation type because of less production of BK.
- Published
- 1996
41. [A case report of mitral valve papillary fibroelastoma leading to embolic stroke].
- Author
-
Shirota K, Yano Y, Hayase S, Ogawa K, Fujita K, Yuasa T, Kidokoro H, Abe T, and Hattori T
- Subjects
- Adult, Fibroma diagnosis, Fibroma surgery, Heart Neoplasms diagnosis, Heart Neoplasms surgery, Heart Valve Prosthesis, Humans, Intracranial Embolism and Thrombosis diagnosis, Male, Fibroma complications, Heart Neoplasms complications, Intracranial Embolism and Thrombosis etiology, Mitral Valve, Neoplastic Cells, Circulating, Papillary Muscles
- Abstract
A 39-year-old man presented with acute onset of left arm and left side face weakness, and mild expressive aphasia. He was referred for two-dimensional echocardiography, which demonstrated a 13 mm diameter pedunculated, mobile, echodense mass attached to the anterior leaflet of the mitral valve. At operation, the tumor was a 10 x 10 x 15 mm, rounded, and yellow-whitish mass with a short stalk arising from rough zone of the anterior leaflet of the mitral valve. The surface appeared to be sean anemone. The mitral valve with this tumor was excised and replaced with a 29 mm St Jude Medical mechanical valve. The pathological findings are typical of a papillary fibroelastoma.
- Published
- 1996
42. [Machado-Joseph disease].
- Author
-
Yuasa T
- Subjects
- Adolescent, Adult, Atrophy, Cerebellar Nuclei pathology, Diagnosis, Differential, Female, Globus Pallidus pathology, Humans, Male, Middle Aged, Red Nucleus pathology, Spinocerebellar Degenerations diagnosis, Machado-Joseph Disease diagnosis, Machado-Joseph Disease genetics, Machado-Joseph Disease pathology
- Published
- 1995
43. [Surgical treatment for ischemic mitral regurgitation in patients with poor left ventricle].
- Author
-
Hayase S, Yano Y, Ogawa K, Fujita K, Yuasa T, Shirota K, Kidokoro H, and Hattori T
- Subjects
- Aged, Female, Heart Valve Prosthesis, Humans, Intra-Aortic Balloon Pumping, Male, Middle Aged, Mitral Valve surgery, Prognosis, Retrospective Studies, Mitral Valve Insufficiency physiopathology, Mitral Valve Insufficiency surgery, Myocardial Ischemia complications, Ventricular Function, Left
- Abstract
Results of CABG with and without mitral valve surgery were analyzed retrospectively in 81 patients with ischemic mitral regurgitation (MR) to determine the effects of severity of MR and surgical treatment on survival. Seven of 81 patients had severe MR (more than Sellers III degrees/IV). Of these 7 patients, 5 patients underwent mitral valve replacement and 1 patient underwent mitral annuloplasty. Only one patient did not undergo valve surgery. This patient had slight improvement of the functional classification after CABG, but died of congestive heart failure 5 years after surgery. There were 3 hospital deaths and 5 late deaths in 81 patients. Among the 29 patients with poor left ventricle (EF < or = 0.3), there were 3 hospital deaths and 2 late deaths. Postoperatively, 12 patients had Sellers II degrees/IV or III degrees/IV MR. In 4 patients of these 12, the severity of MR was aggravated in comparison with the preoperative severity. Three of these 4 patients had perioperative myocardial infarction (PMI). IABP was utilized preoperatively in patients with poor left ventricle to keep the stable hemodynamics and prevent PMI. In these patients, there were no PMI, no hospital death, or no aggravation of MR. In conclusion, patients with Sellers I degree/IV or II degrees/IV MR require CABG only, whereas those with Sellers III degrees/IV or IV degrees/IV MR need CABG combined with mitral valve surgery. Preoperative use of IABP is useful for preventing PMI and aggravation of MR in patients with poor left ventricle.
- Published
- 1995
44. [Experience of modified Bentall's procedure for annulo-aortic ectasia].
- Author
-
Hayase S, Yano Y, Ogawa K, Fujita K, Yuasa T, Kidokoro H, and Hattori T
- Subjects
- Adult, Aged, Aorta, Thoracic surgery, Female, Humans, Male, Middle Aged, Aortic Dissection surgery, Aorta surgery, Aortic Aneurysm, Thoracic surgery, Aortic Valve Insufficiency surgery, Blood Vessel Prosthesis, Coronary Vessels surgery
- Abstract
To reduce the incidence of false aneurysm formation at the suture lines, a known complication with the inclusion technique such as Bentall's procedure or Cabrol's procedure, modified Bentall's procedure (Carrel patch technique), which is identical to Inberg's procedure, has been selected as treatment for annulo-aortic ectasia since 1991. This operation was carried out in 6 consecutive patients with annulo-aortic ectasia from July 1991 to August 1992. The aortic valve and the aneurysm were resected, the coronary ostia were dissected free, mobilized, and then implanted to the composite graft. It was necessary for one patient to undergo coronary artery bypass grafting for myocardial ischemia due to injury of the right coronary ostium. Thereafter, the button of coronary ostium was cut into a big size and then trimmed just before the implantation to the composite graft in order to prevent injury of the button of the coronary ostium. There was no hospital mortality. No pseudo-aneurysm at the coronary ostia or the distal aortic anastomosis was observed at control aortography carried out 1 month after surgery. One patient died 1 year after the first operation because of low cardiac output after the re-operation for pseudo-aneurysm at the proximal aortic anastomosis and infection of the composite graft. All the other patients have been symptom free during follow-up. The use of gelatin impregnated dacron graft and the reinforcement of the suture lines by Teflon felt strips minimized bleeding. One patient underwent this operation without blood transfusion.(ABSTRACT TRUNCATED AT 250 WORDS)
- Published
- 1995
45. [Suppression of conjunctival provocation by 0.1% pemirolast potassium ophthalmic solution in VKC].
- Author
-
Nakagawa Y, Jikuhara Y, Higasida M, and Yuasa T
- Subjects
- Adolescent, Adult, Antigens immunology, Conjunctiva immunology, Female, Histamine Antagonists administration & dosage, Humans, Male, Ophthalmic Solutions, Pyridines administration & dosage, Pyrimidinones administration & dosage, Conjunctiva drug effects, Conjunctivitis, Allergic immunology, Histamine Antagonists pharmacology, Histamine Release drug effects, Pyridines pharmacology, Pyrimidinones pharmacology
- Published
- 1994
46. [A case of leprous neuritis].
- Author
-
Tashiro K, Koike R, Yamazaki M, Nataka K, Tsuji S, and Yuasa T
- Subjects
- Adult, Dapsone administration & dosage, Humans, Leprosy, Tuberculoid drug therapy, Male, Neural Conduction, Peripheral Nerves pathology, Peripheral Nerves physiopathology, Leprosy, Tuberculoid diagnosis
- Published
- 1994
47. [Increased unilateral central motor tract excitability in a patient with corticobasal degeneration].
- Author
-
Shimizu Y, Yokota T, Saito Y, Yuasa T, and Miyatake T
- Subjects
- Afferent Pathways, Aged, Evoked Potentials, Female, Humans, Middle Aged, Brain Diseases physiopathology, Cerebral Cortex physiopathology, Movement Disorders physiopathology
- Abstract
In a 64-year-old woman with a clinical diagnosis of corticobasal degeneration, a hyperexcitability of central motor tract was demonstrated. She had akinesia, regidity, myoclonic movement, hyperreflexia, forced grasping and clumusiness on the right extremities. The asymmetry of these symptoms was striking. Dopa therapy was not effective. On single photon emission computed tomography (SPECT), blood perfusion was reduced especially on the left side in the frontoparietal area. She had large C-reflex after the median nerve stimulation only on the affected side. The intensity threshold of motor evoked potential by stimulation on the left motor cortex was lower than that on the right motor cortex. Conditioning stimulation of the median nerve on the affected side, greatly increased MEP size as compared to those of normal subjects, at conditioning-test (C-T) intervals of 40-80 ms; whereas, stimulation on the contralateral side did not. On the other hand, SEP did not have a marked increase or asymmetry in size and SEP recovery curve showed no hyperexcitability. These results indicate there is a hyperexcitability of the central motor tract on the affected side.
- Published
- 1994
48. [Repeated valvular surgery with minimal heart dissection].
- Author
-
Yano Y, Hayase S, Ogawa K, Fujita K, Yuasa T, Shirota K, Kidokoro H, and Hattori T
- Subjects
- Dissection methods, Humans, Reoperation, Heart Valve Diseases surgery, Heart Valve Prosthesis
- Abstract
Between April 1989 and March 1994, sixteen patients underwent the reoperation for valvular disease. In early years, complete heart dissection performed during operation (group A, n = 7). And recently, minimal necessary dissection was applied (group B, n = 9). In group B, dissection was limited to the ascending aorta, both vena cavae and right upper pulmonary vein. If the adhesion would be dense, pleural cavity would be widely opened and both caval cannula and left atrial vent tube would be cannulated through pleural adhesion. Operation time of group B was significantly decreased in comparison with group A. (group A: 569 +/- 91 min, group B: 347 +/- 65 min, p < 0.01). Post-operative course of group B was considered to be better than group A. These result suggested that minimal necessary heart dissection would be extremely effective during the repeated valvular surgery.
- Published
- 1994
49. [Invasive treatment of ischemic events after coronary artery bypass grafting].
- Author
-
Hayase S, Yano Y, Ogawa K, Fujita K, Yuasa T, Shirota K, Kidokoro H, and Hattori T
- Subjects
- Adult, Aged, Angioplasty, Balloon, Coronary, Female, Follow-Up Studies, Humans, Male, Middle Aged, Myocardial Ischemia therapy, Prognosis, Recurrence, Reoperation, Coronary Artery Bypass, Myocardial Ischemia surgery
- Abstract
PTCA or reCABG was performed for ischemic events after CABG in 32 patients. Since 6 patients were operated on initially elsewhere, the incidence of reCABG among our own patients was 1.2% and that of PTCA was 4.5%. Only one patient of 15 patients, in whom internal thoracic artery (ITA) was utilized at the initial CABG, underwent reCABG and the other patients were treated by PTCA. The use of ITA reduced the necessity for re-CABG because of the superior long-term patency of ITA. PTCA was performed for 32 lesions (19 in saphenous vein grafts (SVG), 4 in ITA grafts, and 9 in native coronary arteries) of 23 patients with success rate of 88%. The rate of restenosis was 36%. There were no complications following PTCA. No patients were referred for emergent surgery. Intracoronary thrombolysis and PTCA for total occlusion of SVG were performed successfully if they were done early after the occurrence of ischemic events. Coronary angiography should be performed as soon as possible. Ten patients underwent re-CABG utilizing ITA in 9 patients and gastro-epiploic artery (GEA) in 3. One patient died of arrhythmia due to spasm. The other 9 patients were discharged and class I or II of NYHA functional classification. The coronary angiography, which was performed at the late follow-up period, showed occlusion of SVG and patency of ITA. The arterial conduits should be applied for reCABG because of the low long-term patency of SVG.
- Published
- 1994
50. [Clinical application of nuclear magnetic spectroscopy for brain diseases].
- Author
-
Yuasa T, Umeda M, and Kuwabara T
- Subjects
- Brain pathology, Brain physiopathology, Brain Diseases pathology, Brain Diseases physiopathology, Humans, Brain Diseases diagnosis, Magnetic Resonance Spectroscopy
- Published
- 1994
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