[Left heart failure in anesthesia in a child pretreated with propranolol--case report].

A 13-year-old girl suffering from nephrogenic hypertension, treated with high-dose propranolol and other antihypertensive medication, developed acute hypoxaemia (oxygen saturation at 60% at 100% oxygen ventilation) shortly after induction of anaesthesia. The auscultatory findings first suggested bronchospasm; however, specific measures failed to improve pulmonary function. The planned procedure was delayed and further investigations showed acute left heart failure due to beta-blockade combining with general anaesthesia.