Ambulatory myocardial ischaemia in stable angina.

Episodes of ischaemic ST segment depression detected by continuous ambulatory electrocardiographic (Holter) monitoring have been extensively investigated for over two decades, but no consensus has emerged about their clinical significance. This review examines the prevalence and reported prognostic importance of ambulatory myocardial ischaemia in patients with stable angina, and discusses whether or not detection and treatment of ischaemic episodes in ambulant angina patients can be justified on the basis of the available evidence.