…whether other interventions (e.g. heart failure management, evaluation for coronary artery disease, etc .) are warranted. Management of AV blocks aims to restore atrioventricular conduction…

…conducted to the ventricles. The atria and the ventricles are electrically dissociated from each other. This condition is referred to as atrioventricular (AV) dissociation. Importantly…

…refractory. If an atrial impulse reaches the atrioventricular node when there are two pathways, one being refractory and the other capable of conducting the impulse…

…contraindication) . Irregular wide complex tachycardia is most often due to atrial fibrillation with wide QRS complexes due to bundle branch blocks or other conduction defects…

…ischemic injury can disrupt the conduction system at any level, producing atrioventricular (AV) or intraventricular blocks. Isolated sinus bradycardia in the early hours following infarction…

…wave. Increasing the paper speed to 50 mm/s or applying carotid massage (which increases the atrioventricular block) will be helpful in such situations. Figure…

…membrane potential, and decreases atrial contractility. Analogous electrophysiological changes occur within the sinus and atrioventricular (AV) nodes. In addition to these direct effects, adenosine antagonizes…

…the atrioventricular (AV) node. The electrical impulse cannot travel directly from atrial myocardium to ventricular myocardium because the two are electrically isolated from each other…

…abnormal, and the following differential diagnoses are at hand: Sinus node dysfunction. Side effects of drugs (diltiazem, verapamil, beta blockers, digitalis). Hypoxia. Myocardial ischemia/infarction…

…can be dramatic, but many episodes are clinically silent and detected only by electrocardiographic monitoring. Syncope may result from transient atrioventricular block, asystole, or ventricular…