The common respiratory syncytial virus has been associated with cardiac involvement, usually tachyarrhythmias and occasionally myocarditis. A child is described who probably developed a complete heart block following respiratory syncytial bronchiolitis. Such an association needs to be considered if the heart is structurally normal and there is no evidence of a congenital heart block in a setting of maternal anti-Ro and anti-La antibodies.

We report a male child with haemophagocytic lymphohistiocytosis who developed myocardial infarction after receiving etoposide. He recovered well with supportive measures and after discontinuation of etoposide. We discuss the possible mechanisms and differential diagnoses of myocardial infarction in our patient.

A patent arterial duct in pre-term neonates is frequent. Systemic complications consecutive to left-to-right shunting are well known but fatal myocardial ischaemia has not been described till now. The presented premature baby died from catecholamine refractory cardiogenic shock. Autoptic examination revealed acute ischaemic changes predominantly in the inner third of myocardium, speaking of coronary hypoperfusion due to a steal phenomenon secondary to the patent arterial duct.