Table 1

Possible mechanisms for myocardial ischaemia in HCM

Increased myocardial oxygen demandReduced myocardial perfusion
Myocardial hypertrophySmall vessel disease
Diastolic dysfunctionAbnormal vascular responses
Myocyte disarrayMyocardial bridges
Left ventricular outflow obstruction ArrhythmiaIncreased coronary vascular resistance