Ms. Thu, 50, experienced dizziness for over a month, leading doctors to diagnose a brain aneurysm.

Mrs. Tam, 76, experienced chest pain behind her sternum for 7-8 minutes before it subsided, with a coronary CT scan revealing in-stent narrowing.

I have 85% coronary artery stenosis, and doctors recommend early intervention. Is stent placement painful, and how long does it take to recover? (Tran Van Duc, 63, Hanoi)

Mr. Hung, 70 years old, experienced chest pain radiating to his neck after an overseas trip; doctors diagnosed acute myocardial infarction due to arterial stenosis and performed two stent placements to restore blood flow.