Heart block as a complication of acute myocardial infarction: the anatomical and physiological mechanisms

Overview Heart block (HB) is a recognised complication of acute myocardial infarction (AMI) and is often a marker for increased mortality and morbidity. An appreciation of the anatomical and physiological mechanisms associated with the development of HB in AMI is important for the prediction and management of complications when dealing with such cases. Certain forms of HB are classically linked to infarction of specific anatomical territories in AMI. However, variations in pre-morbid state and anatomy of the coronary vessels provide potential for the development of HB in any patient experiencing AMI, regardless of the territory affected. LEARNING OUTCOMES After completing this module, the paramedic will be able to: Understand heart block in the context of acute myocardial infarction Understand the relevant anatomy and physiology of clinical presentations of heart block in acute myocardial infarction Identify types of heart block in order to determine appropriate treatment strategies Understand the differe...