研究者業績

加藤 賢

カトウ ケン  (Ken Kato)

基本情報

所属
千葉大学 医学部附属病院循環器内科 助教 (診療講師)
学位
医学博士(2017年3月 千葉大学)

研究者番号
50861134
ORCID ID
 https://orcid.org/0000-0001-6993-5152
J-GLOBAL ID
202101011952297584
researchmap会員ID
R000023470

学歴

 2

論文

 52
  • Ken Kato, Davide Di Vece, Mari Kitagawa, Kayo Yamamoto, Ko Miyakoda, Shuhei Aoki, Hiroki Goto, Hideki Kitahara, Yoshio Kobayashi, Christian Templin
    Journal of cardiology 2025年1月30日  
    Takotsubo syndrome (TTS) is a complex cardiovascular condition characterized by transient left and/or right ventricular dysfunction in the absence of a coronary artery culprit lesion. The InterTAK registry, a large international collaborative registry, has significantly advanced our understanding of TTS. This review summarizes key findings from the InterTAK registry, including epidemiology, clinical presentation, comorbidities, outcomes, and treatment. The registry has revealed the diverse clinical spectrum of TTS, including atypical presentations, and identified various risk factors associated with adverse outcomes. The InterTAK registry has been instrumental in shaping the current understanding of TTS and will continue to guide future research and clinical practice.
  • Takeshi Nishi, Teruyoshi Kume, Yuichi Saito, Ken Kato, Kazuya Tateishi, Ryotaro Yamada, Hideki Kitahara, Yoji Neishi, Yoshio Kobayashi, Shiro Uemura
    European heart journal 45(34) 3181-3183 2024年9月7日  
  • Ken Kato, Davide Di Vece, Mari Kitagawa, Kayo Yamamoto, Shuhei Aoki, Hiroki Goto, Hideki Kitahara, Yoshio Kobayashi, Christian Templin
    Cardiovascular intervention and therapeutics 2024年7月22日  
    Takotsubo syndrome (TTS) can mimic acute coronary syndrome despite being a distinct disease. While typically benign, TTS can lead to serious complications like cardiogenic shock. Cardiogenic shock occurs in 1-20% of TTS cases. Various mechanisms can cause shock, including pump failure, right ventricular involvement, left ventricular outflow tract obstruction, and acute mitral regurgitation. Because treatment depends on the mechanism, early identification of the mechanism developing cardiogenic shock is essential for optimal treatment and improved outcomes in TTS patients with cardiogenic shock. This review summarizes current knowledge on causes and treatment of cardiogenic shock in patients with TTS.
  • Hiroki Goto, Ken Kato, Yoichi Imori, Masaki Wakita, Noriko Eguchi, Hiroyuki Takaoka, Tsutomu Murakami, Yuji Nagatomo, Toshiaki Isogai, Yuya Mitsuhashi, Mike Saji, Satoshi Yamashita, Yuichiro Maekawa, Hiroki Mochizuki, Yoshimitsu Takaoka, Masafumi Ono, Tetsuo Yamaguchi, Yoshio Kobayashi, Kuniya Asai, Wataru Shimizu, Tsutomu Yoshikawa
    Journal of clinical medicine 13(11) 2024年5月30日  
    Background: Although takotsubo syndrome (TTS) is characterized by transient systolic dysfunction of the left ventricle (LV), the time course and mechanism of LV function recovery remain elusive. The aim of this study is to evaluate cardiac functional recovery in TTS via serial cardiac magnetic resonance feature tracking (CMR-FT). Methods: In this Japanese multicenter registry, patients with newly diagnosed TTS were prospectively enrolled. In patients who underwent serial cardiovascular magnetic resonance (CMR) imaging at 1 month and 1 year after the onset, CMR-FT was performed to determine the global circumferential strain (GCS), global radial strain (GRS) and global longitudinal strain (GLS). We compared LV ejection fraction, GCS, GRS and GLS at 1 month and 1 year after the onset of TTS. Results: Eighteen patients underwent CMR imaging in one month and one year after the onset in the present study. LV ejection fraction had already normalized at 1 month after the onset, with no significant difference between 1 month and 1 year (55.8 ± 9.2% vs. 58.9 ± 7.3%, p = 0.09). CMR-FT demonstrated significant improvement in GCS from 1 month to 1 year (-16.7 ± 3.4% vs. -18.5 ± 3.2%, p < 0.01), while there was no significant difference in GRS and GLS between 1 month and year (GRS: 59.6 ± 24.2% vs. 59.4 ± 17.3%, p = 0.95, GLS: -12.8 ± 5.9% vs. -13.8 ± 4.9%, p = 0.42). Conclusions: Serial CMR-FT analysis revealed delayed improvement of GCS compared to GRS and GLS despite of rapid recovery of LV ejection fraction. CMR-FT can detect subtle impairment of LV systolic function during the recovery process in patients with TTS.
  • Yusei Nishikawa, Hiroyuki Takaoka, Ken Kato, Joji Ota, Yoshitada Noguchi, Shuhei Aoki, Moe Matsumoto, Satomi Yashima, Katsuya Suzuki, Kazuki Yoshida, Makiko Kinoshita, Haruka Sasaki, Noriko Suzuki-Eguchi, Yoshio Kobayashi
    Circulation journal : official journal of the Japanese Circulation Society 2024年4月27日  

MISC

 33

書籍等出版物

 1

共同研究・競争的資金等の研究課題

 1