Question
Explain how abnormalities in the cardiac conduction system can lead to arrhythmias, with reference to ECG findings.
Answer :
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Skip in 10
The cardiac conduction system is responsible for initiating and coordinating the heartbeat through the generation and propagation of electrical impulses. It consists of the sinoatrial (SA) node, atrioventricular (AV) node, bundle of His, bundle branches, and Purkinje fibers. Abnormalities in any part of this system can disrupt the normal sequence of depolarization and repolarization, leading to arrhythmias. For example, dysfunction of the SA node, such as
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