Overview

• He was diagnosed in May with asymptomatic myocardial ischemia and began medication to improve coronary blood flow.
• After two months of little improvement, doctors recommended an additional oral therapy to reduce cardiac strain.
• He was admitted to University of Tokyo Hospital on July 14 to initiate the new treatment under medical supervision.
• The Imperial Household Agency has provided regular updates, noting that his length of stay will depend on his response to the treatment.
• His cardiac history includes a 2012 coronary bypass surgery and a 2022 diagnosis of right heart failure from tricuspid valve insufficiency.