Reversible Atrioventricular Block after Electrical Injury.
- Author:
Ji Young LEE
1
;
Hyo In RHYOU
;
Won Joung CHOI
;
Hyo Jin JUNG
;
Seul LEE
;
Jong Sung PARK
Author Information
- Publication Type:Case Report
- Keywords: Electricity; Atrioventricular block
- MeSH: Adult; Atrioventricular Block*; Atropine; Electricity; Electrocardiography; Electrophysiologic Techniques, Cardiac; Emergency Service, Hospital; Follow-Up Studies; Heart Diseases; Humans; Male
- From:Korean Journal of Medicine 2015;89(1):74-78
- CountryRepublic of Korea
- Language:Korean
- Abstract: Here, we report a case of electrical injury-induced reversible advanced second-degree atrioventricular (AV) block. A 28-year-old male visited the emergency department for palpitations 3 days after receiving an electrical injury from 220 volt alternating current. The initial electrocardiogram (ECG) showed sinus rhythm and first-degree AV block with a prolonged PR interval of 400 ms. There was no structural heart disease or electrolyte imbalance. Follow up ECGs acquired 4-6 days after the electrical injury showed intermittent AV block with a prolonged PR interval of 400-460 ms. Exercise treadmill and atropine provocation tests performed 6 days after electrical injury induced advanced second-degree AV block. His bundle electrogram showed intermittent AH block in a Wenckebach pattern with a prolonged AH interval of 220-360 ms and a normal HV interval. Episodes of AV block decreased remarkably 4 weeks after the electrical injury, and the prolonged PR interval returned to 220 ms after 5 months.
