Second-Degree Atrioventricular Block Questions & Answers

Updated: Jan 26, 2017
  • Author: Ali A Sovari, MD, FACP, FACC; Chief Editor: Jeffrey N Rottman, MD  more...
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Questions & Answers

Overview

What is a second-degree atrioventricular (AV) block?

What are the signs and symptoms of second-degree atrioventricular (AV) block?

Which ECG findings are characteristic of Mobitz I second-degree atrioventricular (AV) block?

Which ECG findings are characteristic of Mobitz II second-degree atrioventricular (AV) block?

What are prognostic factors in second-degree atrioventricular (AV) block?

How is the site of a second-degree atrioventricular (AV) block indicated on ECG?

What is the role of diagnostic electrophysiologic testing in the diagnosis of second-degree atrioventricular (AV) block?

What is the role of lab testing in the evaluation of second-degree atrioventricular (AV) block?

How is a Mobitz type I second-degree atrioventricular (AV) block treated?

How is a Mobitz type II second-degree atrioventricular (AV) block treated?

What are the ACC/AHA/HRS guidelines for permanent pacing in patients with second-degree atrioventricular (AV) block?

When is permanent pacing unnecessary for the treatment of second-degree atrioventricular (AV) block?

What is second-degree atrioventricular (AV) block?

What are the types of second-degree atrioventricular (AV) block?

What is the pathophysiology of second-degree atrioventricular (AV) block?

What is the role of medications in the etiology of second-degree atrioventricular (AV) block?

Which conditions are associated with second-degree atrioventricular (AV) block?

What is the role of cardiac tumors in the etiology of second-degree atrioventricular (AV) block?

What is the role of aortic valve replacement in the etiology of second-degree atrioventricular (AV) block?

What is the role of catheter ablation in the etiology of second-degree atrioventricular (AV) block?

What is the role of muscular dystrophy in the etiology of second-degree atrioventricular (AV) block?

What is the role of ethanol poisoning in the etiology of second-degree atrioventricular (AV) block?

What is the role of genetics in the etiology of second-degree atrioventricular (AV) block?

What is the prevalence of second-degree atrioventricular (AV) block?

What is the prognosis of second-degree atrioventricular (AV) block?

Presentation

What are the signs and symptoms of second-degree atrioventricular (AV) block?

DDX

Which conditions should be considered in the differentiation diagnoses of second-degree atrioventricular (AV) block?

What are the differential diagnoses for Second-Degree Atrioventricular Block?

Workup

Which tests are performed in the workup of second-degree atrioventricular (AV) block?

Which ECG findings are characteristic of Mobitz I second-degree atrioventricular (AV) block?

Which ECG findings are characteristic of Mobitz II second-degree atrioventricular (AV) block?

Which ECG findings indicate an infranodal second-degree atrioventricular (AV) block?

Which ECG findings help determine the correct site of block in second-degree atrioventricular (AV) block?

What is the role of autonomic manipulation in the diagnosis of second-degree atrioventricular (AV) block?

What is the role of electrophysiologic testing in the diagnosis of second-degree atrioventricular (AV) block?

Treatment

How is second-degree atrioventricular (AV) block treated?

How is Mobitz I second-degree atrioventricular (AV) block treated?

How is Mobitz II second-degree atrioventricular (AV) block treated?

What is the management for 2:1 second-degree atrioventricular (AV) block?

What is the role of permanent pacing in the treatment of second-degree atrioventricular (AV) block?

What is the efficacy of pacemaker implantation in the treatment of second-degree atrioventricular (AV) block?

Which specialist consultations are beneficial to patients with second-degree atrioventricular (AV) block?

What is included in the long-term monitoring of patients with second-degree atrioventricular (AV) block?

Medications

What is the role of atropine in the treatment of second-degree atrioventricular (AV) block?

Which medications in the drug class Anticholinergic agents are used in the treatment of Second-Degree Atrioventricular Block?