Third degree AV block history and symptoms

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

Overview

Patients with third degree AV block typically experience a lower overall measured heart rate (as low as 28 beats per minute during sleep), low blood pressure, and poor circulation. In some cases, exercising may be difficult, as the heart cannot react quickly enough to sudden changes in demand or sustain the higher heart rates required for sustained activity. Complete heart block associated with a slower pacemaker can result in dizziness, presyncope and syncope.

History

The following history should be elicited while investigating a case of complete heart block.[1]

Symptoms

Patients with complete heart block present with varied symptomatology.[2]

References

  1. Alsayegh Y, Abdallah C (January 2012). "Unusual diagnosis of a persistent third-degree atrioventricular block during anesthesia in a "healthy" pediatric patient". Saudi J Anaesth. 6 (1): 61–4. doi:10.4103/1658-354X.93070. PMC 3299120. PMID 22412781.
  2. Sykes JA, Lubega J, Ezetendu C, Verma R, O'Connor B, Kalyanaraman M (November 2011). "Asymptomatic complete atrioventricular block in a 13-year-old girl". Pediatr Emerg Care. 27 (11): 1081–3. doi:10.1097/PEC.0b013e3182360674. PMID 22068075.


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