ABSTRACT
Bradycardia – pathophysiology Disorders of the sinus node Disorders of atrioventricular and His-Purkinje conduction Conduction abnormalities after myocardial infarction Neurally mediated bradycardia Post-surgical bradyarrhythmias Bradyarrhythmias secondary to medications Diagnostic testing
BRADYCARDIA – PATHOPHYSIOLOGY Bradyarrhythmias and conduction blocks are common electrocardiographic findings. These arrhythmias can result from a wide variety of disorders of the cardiac conduction system. Bradycardias are generally divided into disorders involving either the sinus node or atrioventricular conduction or as neurally mediated arrhythmias. Bradyarrhythmias may be discovered as incidental electro - cardiographic abnormalities or may be found after investigation for symptoms suggestive of their presence. A wide variety of symptoms may be caused by the different etiologies of bradycardia, often times adding diagnostic difficulty to patients with coexisting medical problems.
