Coronary heart disease (CHD) is a major challenge to the health of the nation, affecting an estimated 2.3 million people across the United Kingdom (UK).1 CHD is the single biggest killer in Scotland and is responsible for 12% of all deaths, or around 6,700 deaths each year. Age-standardised death rates for CHD in Scotland are consistently among the highest seen across the UK. Coronary heart disease is associated with many cardiac arrhythmias, with wide-ranging clinical consequences. Arrhythmias are common during acute coronary syndrome (ACS), with ventricular tachyarrhythmias being an important cause of cardiac arrest and sudden cardiac deaths (SCD) in this context. Patients with chronic CHD, particularly those with left ventricular dysfunction and heart failure are also at risk of ventricular arrhythmia and SCD in the longer term. An increasing number of patients with CHD are also affected by atrial fibrillation (AF) which is associated with significant morbidity as well as an increased risk of stroke and death, particularly in patients with other comorbid conditions such as heart failure. Management of arrhythmias in CHD therefore requires a specialist approach which takes into account the management of important related conditions, principally ACS and heart failure. Since publication of this guideline in 2007, there have been major advances in catheter ablation and device-based therapies for arrhythmias, along with changes in pharmacological and device therapy for heart failure and interventional therapy for ACS. The SIGN guidelines for ACS3 and heart failure were updated in 2016 and this guideline has been updated to reflect evidence-based changes in management of arrhythmias in CHD. The SIGN guideline for cardiac rehabilitation includes recommendations for all patients with CHD. Together these guidelines provide a framework for managing patients across the spectrum of coronary heart disease.
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