ContentsSynopsisCodesDifferential Diagnosis & PitfallsBest TestsDrug Reaction DataReferences
Second-degree atrioventricular block
Print
Other Resources UpToDate PubMed

Second-degree atrioventricular block

Print Images (1)
Contributors: Ryan Hoefen MD, PhD
Other Resources UpToDate PubMed

Synopsis

Delayed or blocked cardiac electrical conduction from the atria to the ventricles. Second-degree atrioventricular (AV) block has 2 main subtypes: Mobitz type I (Wenckebach) and Mobitz type II (Hay). Although asymptomatic presentations are common with Mobitz type I, Mobitz type I may also cause major clinical symptoms. Patients with Mobitz type II block may progress to complete heart block and have an increased mortality risk. Clinical presentation is typically variable but common symptoms include light-headedness or syncope (in cases of Mobitz type II), chest pain (in causes of myocarditis or ischemia), irregular heartbeat, bradycardia, and signs of hypoperfusion (ie, hypertension).

Related topics: First-Degree Atrioventricular Block, Complete Atrioventricular Block

Codes

ICD10CM:
I44.1 – Atrioventricular block, second degree

SNOMEDCT:
233917008 – Atrioventricular Block

Differential Diagnosis & Pitfalls

Best Tests

Subscription Required

Drug Reaction Data

Below is a list of drugs with literature evidence indicating an adverse association with this diagnosis. The list is continually updated through ongoing research and new medication approvals. Click on Citations to sort by number of citations or click on Medication to sort the medications alphabetically.

Subscription Required

References

Subscription Required

Last Updated: 12/05/2016
Copyright © 2019 VisualDx®. All rights reserved.
Second-degree atrioventricular block
Print 1 Images
Second-degree atrioventricular block (Mobitz Type II Second Degree AV Block) : Chest pain, Syncope, Dyspnea, Presyncope
Copyright © 2019 VisualDx®. All rights reserved.