Ken Okumura

Prevalence of atrial fibrillation in the general population of Japan: An analysis based on periodic health examination

Hiroshi Inoue, Akira Fujiki, Hideki Origasa et al. · International Journal of Cardiology · 2008 · 432 citations · Full text

Medicine, Cardiology, Health Sciences +10

Nitric Oxide Activity Is Deficient in Spasm Arteries of Patients With Coronary Spastic Angina

Kiyotaka Kugiyama, Hirofumi Yasue, Ken Okumura et al. · Circulation · 1996 · 382 citations

Medicine, Cardiology, Pharmacology +16

Sensitivity and specificity of intracoronary injection of acetylcholine for the induction of coronary artery spasm

Ken Okumura, Hirofumi Yasue, Koshi Matsuyama et al. · Journal of the American College of Cardiology · 1988 · 300 citations

Medicine, Cardiology, Pharmacology +11

Plasma levels of matrix metalloproteinase-9 and tissue inhibitor of metalloproteinase-1 are increased in the coronary circulation in patients with acute coronary syndrome

Yoichi Inokubo, Hiroyuki Hanada, Hiroshi Ishizaka et al. · American Heart Journal · 2001 · 285 citations

Medicine, Cardiology, Internal Medicine +11

A Combined Optical Coherence Tomography and Intravascular Ultrasound Study on Plaque Rupture, Plaque Erosion, and Calcified Nodule in Patients With ST-Segment Elevation Myocardial Infarction

Takumi Higuma, Tsunenari Soeda, Naoki Abe et al. · JACC: Cardiovascular Interventions · 2015 · 270 citations

Medicine, Cardiology, Radiology +17