first-degree atrioventricular (AV) block

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Introduction

First-degree AV block generally results from a delay of impulse propagation through the AV node. Less frequently, a delay of impulse propagation through the atrium or the His-Purkinje system (bundle branch block) is the culprit.

Etiology

Clinical manifestations

  • generally asymptomatic
  • may exacerbate CHF

Diagnostic procedures

Complications

Management

More general terms

References

  1. Manual of Medical Therapeutics, 28th ed, Ewald & McKenzie (eds), Little, Brown & Co, Boston, 1995, pg 139
  2. 2.0 2.1 2.2 2.3 Cheng S et al Long-term Outcomes in Individuals With Prolonged PR Interval or First-Degree Atrioventricular Block JAMA. 2009;301(24):2571-2577. <PubMed> PMID: https://www.ncbi.nlm.nih.gov/pubmed/19549974 <Internet> http://jama.ama-assn.org/cgi/content/short/301/24/2571
  3. 3.0 3.1 Medical Knowledge Self Assessment Program (MKSAP) 17, 18, American College of Physicians, Philadelphia 2015, 2018.