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286 results on '"Akashi, Yoshihiro J."'

3. Physiological Assessment with iFR prior to FFR Measurement in Left Main Disease

Author

Warisawa, Takayuki, Cook, Christopher M., Ahmad, Yousif, Howard, James P., Seligman, Henry, Rajkumar, Christopher, Toya, Takumi, Doi, Shunichi, Nakajima, Akihiro, Nakayama, Masafumi, Vera-Urquiza, Rafael, Yuasa, Sonoka, Sato, Takao, Kikuta, Yuetsu, Kawase, Yoshiaki, Nishina, Hidetaka, Al-Lamee, Rasha, Sen, Sayan, Lerman, Amir, Matsuo, Hitoshi, Akashi, Yoshihiro J., Escaned, Javier, and Davies, Justin E.

Published
2024
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8. Physiology-guided PCI versus CABG for left main coronary artery disease: insights from the DEFINE-LM registry

Author

Warisawa, Takayuki, Cook, Christopher M., Kawase, Yoshiaki, Howard, James P., Ahmad, Yousif, Seligman, Henry, Rajkumar, Christopher, Toya, Takumi, Doi, Shunichi, Nakajima, Akihiro, Tanigaki, Toru, Omori, Hiroyuki, Nakayama, Masafumi, Vera-Urquiza, Rafael, Yuasa, Sonoka, Sato, Takao, Kikuta, Yuetsu, Nishina, Hidetaka, Al-Lamee, Rasha, Sen, Sayan, Lerman, Amir, Akashi, Yoshihiro J., Escaned, Javier, Matsuo, Hitoshi, and Davies, Justin E.

Published
2023
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9. Prognostic Value of Electrocardiographic Left Ventricular Hypertrophy After Transcatheter Aortic Valve Implantation: Insights from the OCEAN-TAVI Registry

Author

Koga, Masashi, Izumo, Masaki, Yoneyama, Kihei, Akashi, Yoshihiro J., Yashima, Fumiaki, Tada, Norio, Yamawaki, Masahiro, Shirai, Shinichi, Naganuma, Toru, Yamanaka, Futoshi, Ueno, Hiroshi, Tabata, Minoru, Mizutani, Kazuki, Takagi, Kensuke, Watanabe, Yusuke, Yamamoto, Masanori, and Hayashida, Kentaro

Published
2023
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11. Therapeutic angiogenesis for patients with no-option critical limb ischemia by adipose-derived regenerative cells: TACT-ADRC multicenter trial

Author

Shimizu, Yuuki, Kondo, Kazuhisa, Hayashida, Ryo, Sasaki, Ken-ichiro, Ohtsuka, Masanori, Fukumoto, Yoshihiro, Takashima, Shinichiro, Inoue, Oto, Usui, Soichiro, Takamura, Masayuki, Sakuma, Masashi, Inoue, Teruo, Nagata, Tokuichiro, Akashi, Yoshihiro J., Yamada, Yoshihiro, Kato, Tamon, Kuwahara, Koichiro, Tateno, Kaoru, Kobayashi, Yoshio, Shibata, Rei, and Murohara, Toyoaki

Published
2022
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13. Deferred Versus Performed Revascularization for Left Main Coronary Disease With Hemodynamic Significance

Author

Warisawa, Takayuki, Cook, Christopher M., Ahmad, Yousif, Howard, James P., Seligman, Henry, Rajkumar, Christopher, Toya, Takumi, Doi, Shunichi, Nakajima, Akihiro, Nakayama, Masafumi, Vera-Urquiza, Rafael, Yuasa, Sonoka, Sato, Takao, Kikuta, Yuetsu, Kawase, Yoshiaki, Nishina, Hidetaka, Al-Lamee, Rasha, Sen, Sayan, Lerman, Amir, Matsuo, Hitoshi, Akashi, Yoshihiro J., Escaned, Javier, and Davies, Justin E.

Published
2023
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15. Inter-observer differences in interpretation of coronary pressure-wire pullback data by non-expert interventional cardiologists

Author

Warisawa, Takayuki, Howard, James P., Cook, Christopher M., Ahmad, Yousif, Doi, Shunichi, Nakayama, Masafumi, Goto, Sonoka, Yakuta, Yohei, Karube, Kenichi, Seike, Fumiyasu, Uetani, Teruyoshi, Murai, Tadashi, Kikuta, Yuetsu, Shiono, Yasutsugu, Kawase, Yoshiaki, Shun-Shin, Matthew J., Kaihara, Toshiki, Higuma, Takumi, Ishibashi, Yuki, Matsuda, Hisao, Nishina, Hidetaka, Matsuo, Hitoshi, Escaned, Javier, Akashi, Yoshihiro J., and Davies, Justin E.

Published
2021
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17. Association between acute myocardial infarction-to-cardiac rupture time and in-hospital mortality risk: a retrospective analysis of multicenter registry data from the Cardiovascular Research Consortium-8 Universities (CIRC-8U)

Author

Yoneyama, Kihei, Ishibashi, Yuki, Koeda, Yorihiko, Itoh, Tomonori, Morino, Yoshihiro, Shimohama, Takao, Ako, Junya, Ilari, Yuji, Yoshioka, Koichiro, Kunishima, Tomoyuki, Inami, Shu, Ishikawa, Tetsuya, Sugimura, Hiroyuki, Kozuma, Ken, Sugi, Keiki, Yoshino, Hideaki, and Akashi, Yoshihiro J.

Published
2021
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19. Prognostic value of extraaortic‐valvular cardiac damage in patients with moderate aortic stenosis and reduced left ventricular ejection fraction.

Author

Onishi, Hirokazu, Izumo, Masaki, Watanabe, Yusuke, Okutsu, Masaaki, Hozawa, Koji, Shoji, Tatsuro, Sato, Yukio, Kuwata, Shingo, and Akashi, Yoshihiro J.

Subjects
HEART disease prognosis, HEART disease risk factors, LEFT heart ventricle, RISK assessment, AORTIC valve, HEART injuries, VENTRICULAR ejection fraction, HOSPITAL care, HEART physiology, HEART valve diseases, SEVERITY of illness index, RETROSPECTIVE studies, DESCRIPTIVE statistics, MULTIVARIATE analysis, AORTIC stenosis, CARDIOVASCULAR disease diagnosis, CONFIDENCE intervals, LEFT ventricular dysfunction, ECHOCARDIOGRAPHY, HEART ventricles
Abstract

Purpose: The extraaortic‐valvular cardiac damage (EVCD) Stage has shown potential for risk stratification for patients with aortic stenosis (AS). This study aimed to examine the usefulness of the EVCD Stage in risk stratification of patients with moderate AS and reduced left ventricular ejection fraction (LVEF). Methods: Clinical data from patients with moderate AS (aortic valve area,.60–.85 cm2/m2; peak aortic valve velocity, 2.0–4.0 m/s) and reduced LVEF (LVEF 20%–50%) were analyzed during 2010–2019. Patients were categorized into three groups: EVCD Stages 1 (LV damage), 2 (left atrium and/or mitral valve damage), and 3/4 (pulmonary artery vasculature and/or tricuspid valve damage or right ventricular damage). The primary endpoint included a composite of cardiac death and heart failure hospitalization, with non‐cardiac death as a competing risk. Results: The study included 130 patients (mean age 76.4 ± 6.8 years; 62.3% men). They were categorized into three groups: 26 (20.0%) in EVCD Stage 1, 66 (50.8%) in Stage 2, and 48 (29.2%) in Stage 3/4. The endpoint occurred in 54 (41.5%) patients during a median follow‐up of 3.2 years (interquartile range, 1.4–5.1). Multivariate analysis indicated EVCD Stage 3/4 was significantly associated with the endpoint (hazard ratio 2.784; 95% confidence interval 1.197–6.476; P =.017) compared to Stage 1, while Stage 2 did not (hazard ratio 1.340; 95% confidence interval.577–3.115; P =.500). Conclusion: The EVCD staging system may aid in the risk stratification of patients with moderate AS and reduced LVEF. [ABSTRACT FROM AUTHOR]

Published
2024
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20. Behavior of the OptiVol2 fluid index and intrathoracic impedance on remote monitoring As a detector of subclinical device infection early after implantation.

Author

Daisuke Togashi, Kenichi Sasaki, Tomoo Harada, and Akashi, Yoshihiro J.

Subjects
INFECTION risk factors, BLOOD, IMMUNOSUPPRESSIVE agents, ERYTHEMA, MICROBIAL sensitivity tests, STAPHYLOCOCCAL diseases, MALNUTRITION, RHEUMATOID arthritis, COMPUTED tomography, EDEMA, BIOELECTRIC impedance, INFECTION, DILATED cardiomyopathy, PEPTIDE hormones, SARCOIDOSIS, ULTRASONIC imaging, FEVER, HEMATOMA, TELEMEDICINE, VENTRICULAR tachycardia, CELL culture, IMPLANTABLE cardioverter-defibrillators, CARDIAC arrest, CATHETER ablation, INFLAMMATION, SURGICAL site infections, DIABETES, DISEASE risk factors
Published
2024
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21. Safety of Revascularization Deferral of Left Main Stenosis Based on Instantaneous Wave-Free Ratio Evaluation

Author

Warisawa, Takayuki, Cook, Christopher M., Rajkumar, Christopher, Howard, James P., Seligman, Henry, Ahmad, Yousif, El Hajj, Stephanie, Doi, Shunichi, Nakajima, Akihiro, Nakayama, Masafumi, Goto, Sonoka, Vera-Urquiza, Rafael, Sato, Takao, Kikuta, Yuetsu, Kawase, Yoshiaki, Nishina, Hidetaka, Petraco, Ricardo, Al-Lamee, Rasha, Nijjer, Sukhjinder, Sen, Sayan, Nakamura, Sunao, Lerman, Amir, Matsuo, Hitoshi, Francis, Darrel P., Akashi, Yoshihiro J., Escaned, Javier, and Davies, Justin E.

Published
2020
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27. Algorithmic Versus Expert Human Interpretation of Instantaneous Wave-Free Ratio Coronary Pressure-Wire Pull Back Data

Author

Cook, Christopher M., Warisawa, Takayuki, Howard, James P., Keeble, Thomas R., Iglesias, Juan F., Schampaert, Erick, Bhindi, Ravinay, Ambrosia, Alphonse, Matsuo, Hitoshi, Nishina, Hidetaka, Kikuta, Yuetsu, Shiono, Yasutsugu, Nakayama, Masafumi, Doi, Shunichi, Takai, Manabu, Goto, Sonoka, Yakuta, Yohei, Karube, Kenichi, Akashi, Yoshihiro J., Clesham, Gerald J., Kelly, Paul A., Davies, John R., Karamasis, Grigoris V., Kawase, Yoshiaki, Robinson, Nicholas M., Sharp, Andrew S.P., Escaned, Javier, and Davies, Justin E.

Published
2019
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28. Takotsubo syndrome: State-of-the-art review by an expert panel – Part 2

Author

Dias, Andre, Núñez Gil, Ivan J., Santoro, Francesco, Madias, John E., Pelliccia, Francesco, Brunetti, Natale Daniele, Salmoirago-Blotcher, Elena, Sharkey, Scott W., Eitel, Ingo, Akashi, Yoshihiro J., El-Battrawy, Ibrahim, Franco, Emiliana, Akin, Ibrahim, Jaguszewski, Milosz, Dawson, Dana, Figueredo, Vincent M., Napp, L. Christian, Christensen, Thomas Emil, Hebert, Kathy, Ben-Dor, Itsik, Ozaki, Yuichi, García-Garcia, Héctor M., Kajita, Alexandre H., Akasaka, Takashi, Kurisu, Satoshi, Lerman, Amir, and Waksman, Ron

Published
2019
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29. Takotsubo syndrome: State-of-the-art review by an expert panel – Part 1

Author

Dias, Andre, Núñez Gil, Ivan J., Santoro, Francesco, Madias, John E., Pelliccia, Francesco, Brunetti, Natale Daniele, Salmoirago-Blotcher, Elena, Sharkey, Scott W., Eitel, Ingo, Akashi, Yoshihiro J., El-Battrawy, Ibrahim, Franco, Emiliana, Akin, Ibrahim, Jaguszewski, Milosz, Dawson, Dana, Figueredo, Vincent M., Napp, L. Christian, Christensen, Thomas Emil, Hebert, Kathy, Ben-Dor, Itsik, Ozaki, Yuichi, García-Garcia, Héctor M., Kajita, Alexandre H., Akasaka, Takashi, Kurisu, Satoshi, Lerman, Amir, and Waksman, Ron

Published
2019
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30. Prediction of symptom development and aortic valve replacement in patients with low-gradient severe aortic stenosis.

Author

Daisuke Miyahara, Masaki Izumo, Yukio Sato, Tatsuro Shoji, Risako Murata, Ryutaro Oda, Taishi Okuno, Shingo Kuwata, and Akashi, Yoshihiro J.

Subjects
AORTIC valve transplantation, AORTIC stenosis, STRESS echocardiography, ASYMPTOMATIC patients, VENTRICULAR ejection fraction, AORTIC valve insufficiency
Abstract

Aims: Current evidence on the prognostic value of exercise stress echocardiography (ESE) in asymptomatic patients with low-gradient severe aortic stenosis (AS) is limited. Therefore, this study aimed to elucidate its prognostic implications for patients with low-gradient severe AS and determine the added value of ESE in risk stratification for this population. Methods and results: This retrospective observational study included 122 consecutive asymptomatic patients with either moderate [mean pressure gradient (MPG) < 40 mmHg and aortic valve area (AVA) 1.0-1.5 cm²] or low-gradient severe (MPG < 40 mmHg and AVA < 1.0 cm²) AS and preserved left ventricular ejection fraction (≥50%) who underwent ESE. All patients were followed up for AS-related events. Of 143 patients, 21 who met any exclusion criteria, including early interventions, were excluded, and 122 conservatively managed patients [76.5 (71.0-80.3) years; 48.3% male] were included in this study. During a median follow-up period of 989 (578-1571) days, 64 patients experienced AS-related events. Patients with low-gradient severe AS had significantly lower event-free survival rates than those with moderate AS (log-rank test, P < 0.001). Multivariable Cox regression analysis showed that the mitral E/e' ratio during exercise was independently associated with AS-related events (hazard ratio = 1.075, P < 0.001) in patients with low-gradient severe AS. Conclusion: This study suggests that asymptomatic patients with low-gradient severe AS have worse prognoses than those with moderate AS. Additionally, the mitral E/e' ratio during exercise is a useful parameter for risk stratification in patients with low-gradient severe AS. [ABSTRACT FROM AUTHOR]

Published
2024
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40. Prognostic value of transvalvular flow rate in patients with low‐gradient severe aortic stenosis: A dobutamine stress echocardiography study.

Author

Onishi, Hirokazu, Izumo, Masaki, Nishikawa, Haruka, Suzuki, Tomomi, Sato, Yukio, Watanabe, Mika, Kuwata, Shingo, Kamijima, Ryo, Naganuma, Toru, Nakamura, Sunao, and Akashi, Yoshihiro J.

Subjects
ECHOCARDIOGRAPHY, CAUSES of death, VENTRICULAR ejection fraction, CONFIDENCE intervals, DOBUTAMINE, MULTIVARIATE analysis, AORTIC stenosis, RETROSPECTIVE studies, ACQUISITION of data, HEART valves, BLOOD circulation, MEDICAL records, HOSPITAL care, DESCRIPTIVE statistics, STROKE volume (Cardiac output), PSYCHOLOGICAL stress, HEART failure
Abstract

Backgrounds: There are limited data on the clinical relevance of transvalvular flow rate (Qmean) at rest (Qrest) and at peak stress (Qstress) during dobutamine stress echocardiography (DSE) in patients with low‐gradient severe aortic stenosis (LG‐SAS). Methods: We retrospectively analyzed the clinical data of patients with LG‐SAS who underwent DSE. LG‐SAS was defined as an aortic valve (AV) area index of <.6 cm2/m2 and a mean AV pressure gradient (AVPG) of < 40 mm Hg. The primary endpoint included all‐cause death and heart failure hospitalization. Results: Of 100 patients (mean age 79.5 ± 7.3 years; men, 45.0%; resting left ventricular ejection fraction [LVEF] 52.1% ± 15.9%; resting stroke volume index 35.8 ± 7.7 mL/m2; Qrest 171.8 ± 34.9 mL/s), the primary endpoint occurred in 51 patients during a median follow‐up of 2.84 (interquartile range 1.01–5.21) years. When the study patients were divided into three subgroups based on Qrest and Qstress, the multivariate analysis showed that Qrest < 200 mL/s and Qstress ≥200 mL/s (hazard ratio 3.844; 95% confidence interval 1.143–12.930; p =.030), as well as Qrest and Qstress < 200 mL/s (hazard ratio 9.444; 95% confidence interval 2.420–36.850; p =.001), were significantly associated with unfavorable outcomes with Qrest and Qstress ≥200 mL/s as a reference after adjusting for resting LVEF, resting mean AVPG, chronic kidney disease, New York Heart Association functional class III/IV, and AV replacement. Conclusions: Flow conditions based on the combination of Qrest and Qstress are helpful for risk stratification in LG‐SAS patients. [ABSTRACT FROM AUTHOR]

Published
2024
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42. Revisiting predictors of worse atrioventricular valve and left ventricular systolic function following pacemaker therapy.

Author

Sasaki, Kenichi, Togashi, Daisuke, Nakajima, Ikutaro, Nakayama, Yui, Harada, Tomoo, and Akashi, Yoshihiro J.

Subjects
MITRAL valve insufficiency, CONFIDENCE intervals, SCIENTIFIC observation, TRICUSPID valve diseases, SYSTOLIC blood pressure, LEFT ventricular dysfunction, MULTIVARIATE analysis, RETROSPECTIVE studies, HEART ventricles, DESCRIPTIVE statistics, HEART physiology, CARDIAC pacemakers, LOGISTIC regression analysis, AORTIC valve
Abstract

Background: Predictors of worsening atrioventricular valve regurgitation and left ventricular (LV) systolic function after implantation of a leadless pacemaker (LPM) remain unclear compared with those of a transvenous pacemaker (TPM). Methods: We retrospectively analyzed 205 patients who were newly implanted with a permanent pacemaker (119 LPMs and 86 TPMs) and underwent transthoracic echocardiography before and 8 ± 5 months after implantation. We evaluated the worsening of tricuspid and mitral regurgitation (TR and MR), defined as at least one‐grade aggravation in severity, and changes in LV ejection fraction (LVEF). Results: Worsening TR occurred more frequently in the LPM group compared to the TPM group (33% vs. 20%, p =.04); however, there was no significant difference between the two groups regarding worsening MR (26% vs. 18%, p =.18) and LVEF change (–2 ± 10% vs. –3 ± 8%, p =.40). In multivariable analysis, independent predictors for worsening TR, MR, and LVEF after implantation were found to be (1) the change from sinus rhythm at baseline to atrioventricular asynchronous right ventricular (RV) pacing (odds ratio [OR]: 5.68, 95% confidence interval [CI]: 1.94–16.70, p <.01); (2) the change from non‐pacing ventricular contraction at baseline to RV pacing (OR: 2.42, 95% CI: 1.12–5.24, p =.02); and (3) a higher RV pacing burden (β: –0.05, 95% CI: −0.08–−0.02, p <.01), respectively. Conclusion: Worsening TR, MR, and LVEF after pacemaker implantation were not associated with the type of pacing device but loss of atrioventricular synchrony or dependency on RV pacing. [ABSTRACT FROM AUTHOR]

Published
2023
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47. Physiological Pattern of Disease Assessed by Pressure-Wire Pullback Has an Influence on Fractional Flow Reserve/Instantaneous Wave-Free Ratio Discordance: Insights From the Multicenter AJIP Registry

Author

Warisawa, Takayuki, Cook, Christopher M., Howard, James P., Ahmad, Yousif, Doi, Shunichi, Nakayama, Masafumi, Goto, Sonoka, Yakuta, Yohei, Karube, Kenichi, Shun-Shin, Matthew J., Petraco, Ricardo, Sen, Sayan, Nijjer, Sukhjinder, Al Lamee, Rasha, Ishibashi, Yuki, Matsuda, Hisao, Escaned, Javier, di Mario, Carlo, Francis, Darrel P., Akashi, Yoshihiro J., and Davies, Justin E.

Published
2019
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