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] Soroush Seifirad, M.D.[4]
Overview
Patients with third degree AV block typically experience a lower overall measured heart rate, low blood pressure. 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 and Symptoms
- The majority of patients with third degree AV block are asymptomatic.
OR
- The hallmark of third degree AV block is [finding]. A positive history of [finding 1] and [finding 2] is suggestive of third degree AV block. The most common symptoms of third degree AV block include [symptom 1], [symptom 2], and [symptom 3].
- Symptoms of third degree AV block include [symptom 1], [symptom 2], and [symptom 3].
History
Patients with third degree AV block] may have a positive history of:
- [History finding 1]
- [History finding 2]
- [History finding 3]
Common Symptoms
Common symptoms of [disease] include:
- [Symptom 1]
- [Symptom 2]
- [Symptom 3]
Less Common Symptoms
Less common symptoms of third degree AV block include
- [Symptom 1]
- [Symptom 2]
- [Symptom 3]
Overview
Patients with third degree AV block typically experience a lower overall measured heart rate, low blood pressure. 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]
- History of any cardiac disease
- History of use of any medications which affect the conduction through the conducting system (beta blockers, calcium channel blockers, digitalis)
- History of previous cardiac interventions (aortic valve surgery [TAVI], ASD, VSD and TGA repairs, ablation procedures etc.,)
Symptoms
Patients with complete heart block present with varied symptomatology.[2][3]
- Some patients may be asymptomatic or have symptoms related to hypotension.
- Complete heart block with narrow QRS comples (level of block above His bundle) is associated with minimal symptoms.
- Patients with complete heart block and wide QRS complex (level of block below the His bundle) may present with
References
- ↑ 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.
- ↑ 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.
- ↑ Medeiros A, Iturralde P, Millán F, Colín L, Cruz F, González Hermosillo JA, Méndez A (1999). "[A complete atrioventricular block during exertion]". Arch Inst Cardiol Mex (in Spanish; Castilian). 69 (3): 250–7. PMID 10529859.