Fifteen-minute consultation: How to manage neonatal bradycardia

Neonatal bradycardia is characterised by a heart rate below 80 bpm, irrespective of gestational age. It is generally self-resolving but, in some cases, represents an underlying pathology which may be cardiac or non-cardiac in origin. The common causes for bradycardia are non-cardiac in origin such as autonomic immaturity in premature infants, electrolyte imbalances, hypothyroidism and medications. Cardiac causes include—sinus bradycardia, conduction system abnormalities, congenital heart disease and channelopathies. Diagnostic investigations typically include a standard 12-lead ECG, 24-hour Holter monitor and an echocardiogram. This article aims to provide a practical framework for the management of neonates with bradycardia and guide further investigation and/or referral to specialist paediatric cardiology services.