Yasuhiro Usui

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BACKGROUND In patients with chronic heart failure (CHF), the presence of sleep-disordered breathing, including either obstructive sleep apnea or Cheyne-Stokes respiration-central sleep apnea, is(More)
BACKGROUND Although the development of a coronary guidewire mounted with a pressure sensor has facilitated the measurement of pressure-derived fractional flow reserve (FFR) to assess the functional(More)
BACKGROUND Although obstructive sleep apnea (OSA) severity is evaluated by the apnea-hypopnea index (AHI), the value of AHI in evaluating cardiovascular risks, especially in mild to moderate OSA, is(More)
BACKGROUND To determine the prognostic value of post-ischemic stunning, the Japanese assessment of cardiac event and survival study by quantitative gated myocardial single-photon emission computed(More)