摘要
IN the last year, 41 year-old Huang has suffered more frequently from chest pains and breathlessness, especially when she is tired or angry. These symptoms usually last three to five minutes but can linger for up to an hour or two. Nitroglycerin sometimes helps alleviate the symptoms but not always. No tell-tale abnormal signs show up in Holter, heart supersonic or electrocardiogram checks when the problem is coming on.
