Myocardial infarction, hyperkalaemia and ventricular tachycardia in a young male body-builder

A 31-year-old body-builder taking anabolic steroids, amphetamines, frumil (frusemide and amiloride), and potassium supplements collapsed with a myocardial infarction. His serum potassium was 6.7 mmol/l and he had a run of ventricular tachycardia. He was unaware of the effects of the drugs on the heart.