atrioventricular (AV) block
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Introduction
A delay in conduction of electrical impulses through the AV node or a dissociation of the electrical impulses between the atrium & ventricle, generally resulting in a reduction in heart rate.
Etiology
- idiopathic fibrosis of the conduction system
- inferior wall cardiac ischemia
- congenital block
- increased vagal tone
- endocarditis with extension in the aortic valve annulus & formation of a pericardial abscess
- pharmaceutical agents:
Diagnostic procedures
- prolongation of the PR interval
More general terms
More specific terms
- first-degree atrioventricular (AV) block
- second-degree atrioventricular (AV) block
- third-degree atrioventricular (AV) block (complete heart block)
References
- ↑ Harrison's Principles of Internal Medicine, 13th ed. Companion Handbook, Isselbacher et al (eds), McGraw-Hill Inc. NY, 1995, pg 829-39
- ↑ Manual of Medical Therapeutics, 28th ed, Ewald & McKenzie (eds), Little, Brown & Co, Boston, 1995, pg 139
- ↑ Medical Knowledge Self Assessment Program (MKSAP) 11, 18. American College of Physicians, Philadelphia 1998, 2018.
- ↑ Da Costa D, Brady WJ, Edhouse J. Bradycardias and atrioventricular conduction block. BMJ. 2002 Mar 2;324(7336):535-8. Review. PMID: https://www.ncbi.nlm.nih.gov/pubmed/11872557 Free PMC Article