Tā déguò yí cì xīnjī gěngsè, xiànzài měitiān chī yào.
He once had a myocardial infarction, and now takes medication every day.
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梗塞 has a strong medical use — 心肌梗塞 (heart attack / MI) and 脑梗塞 (cerebral infarction / ischemic stroke) are everyday hospital terms. Outside medicine it covers any sudden blockage of pipes, traffic or processes.
