A 63-year-old woman with metastatic breast cancer was referred to our bronc
hoscopy unit for outpatient laser resection of an endobronchial mass throug
h fiberoptic bronchoscopy. The patient had no history of ischemic heart dis
ease. During the procedure, the patient developed an ST-segment elevation a
nd a complete atrioventricular block, IV nitroglycerin and morphine were ef
fective in treating this episode. In this patient, we were able to demonstr
ate a focal spasm by postbronchoscopy coronary angiography.