Successful percutaneous coronary intervention for acute coronary syndrome in a patient with haemophilia B.

Haemophilia is a congenital coagulation defect brought about by the deficiency or lack of coagulation factor IX. The prevalence of coronary artery disease and acute coronary syndrome (ACS) is lower among haemophiliacs than in the normal population. However, with the administration of factor concentrate, average life expectancy can now extend to as long as 70 years in patients with haemophilia, and this in turn is leading to an increase in the prevalence of cardiac diseases among this population. Data regarding a treatment protocol for ACS and percutaneous coronary intervention (PCI) in patients with congenital coagulation defects is limited. We report a 41-year-old male patient with haemophilia B who presented with a non-ST elevation myocardial infarction, and on whom PCI was performed following monitoring of factor IX levels. The patient had no cardiovascular risk factor except smoking.