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Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.

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Second degree AV block natural history, complications and prognosis

Introduction

Overview

Overview

Second-degree AV nodal block commonly is seen in acute clinical settings including acute inferior wall myocardial infarction, digitalis intoxication, myocarditis, rheumatic fever, after cardiac surgery. Chronic AV nodal block is seen in the setting of ischemic heart disease, mesothelioma of the AV node, atrial septal defect, aortic valvular disease, amyloidosis, Reiter’s syndrome, mitral valve prolapse, in healthy populations, and in trained athletes. Mobitz II second degree Av block due to block inferior to the AV node (infra-Hisian structures) may progresses to complete heart block. Common complications associated with mobitz type 2 second degree AV block include progression to complete heart block, syncope, dizziness, chest pain, and death. Prognosis is generally good in patients with chronic second-degree AV nodal block without organic heart disease.However, in patients with heart disease prognosis is poor and dependent on the severity of underlying heart disease.

Natural History

Natural History

Complications

Complications

Prognosis

Prognosis

Prognosis is generally good in patients with chronic second-degree AV nodal block without organic heart disease. However, in patients with organic heart disease prognosis is poor and dependent on the severity of underlying heart disease.[7]

References

References

  1. ↑ Strasberg B, Amat-Y-Leon F, Dhingra RC, Palileo E, Swiryn S, Bauernfeind R, Wyndham C, Rosen KM (May 1981). “Natural history of chronic second-degree atrioventricular nodal block”. Circulation. 63 (5): 1043–9. doi:10.1161/01.cir.63.5.1043. PMID 7471363.
  2. ↑ Rodstein M, Wolloch L, Iuster Z (1979). “The natural history intraventricular conduction disturbances in the aged: an analysis of the developing second and third degree heart block with clinical pathological correlations”. Am. J. Med. Sci. 277 (2): 179–88. doi:10.1097/00000441-197903000-00006. PMID 463945.
  3. ↑ Bexton RS, Camm AJ (March 1984). “Second degree atrioventricular block”. Eur. Heart J. 5 Suppl A: 111–4. doi:10.1093/eurheartj/5.suppl_a.111. PMID 6373268.
  4. ↑ Mangi MA, Jones WM, Napier L. PMID 29493981. Missing or empty |title= (help)
  5. ↑ Pfeiffer D, Jung W, Fehske W, Korte T, Manz M, Moosdorf R, Lüderitz B (April 1994). “Complications of pacemaker-defibrillator devices: diagnosis and management”. Am. Heart J. 127 (4 Pt 2): 1073–80. doi:10.1016/0002-8703(94)90090-6. PMID 8160583.
  6. ↑ Bloom H, Heeke B, Leon A, Mera F, Delurgio D, Beshai J, Langberg J (February 2006). “Renal insufficiency and the risk of infection from pacemaker or defibrillator surgery”. Pacing Clin Electrophysiol. 29 (2): 142–5. doi:10.1111/j.1540-8159.2006.00307.x. PMID 16492298.
  7. ↑ Strasberg, B; Amat-Y-Leon, F; Dhingra, R C; Palileo, E; Swiryn, S; Bauernfeind, R; Wyndham, C; Rosen, K M (1981). “Natural history of chronic second-degree atrioventricular nodal block”. Circulation. 63 (5): 1043–1049. doi:10.1161/01.CIR.63.5.1043. ISSN 0009-7322.


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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Sara Zand, M.D.[2] Raviteja Guddeti, M.B.B.S. [3]