Recurrent Syncope Episodes and Exercise Intolerance in Hypertrophic Cardiomyopathy Combined with Atrioventricular Conduction Disturbance.
10.4250/jcu.2013.21.3.148
- Author:
Kyun Hee KIM
1
;
Dong Heon YANG
;
Chang Yeon KIM
;
Nam Kyun KIM
;
Won Suk CHOI
;
Myung Hwan BAE
;
Jang Hoon LEE
;
Hun Sik PARK
;
Yongkeun CHO
;
Shung Chull CHAE
Author Information
1. Department of Cardiology, Kyungpook National University Hospital, Daegu, Korea. ddhyang@knu.ac.kr
- Publication Type:Case Report
- Keywords:
Hypertrophic cardiomyopathy;
Syncope;
Atrioventricular block;
Stress echocardiography
- MeSH:
Adult;
Atrioventricular Block;
Cardiomyopathy, Hypertrophic*;
Dyspnea;
Echocardiography, Stress;
Electrocardiography;
Female;
Humans;
Syncope*;
Tachycardia, Ventricular
- From:Journal of Cardiovascular Ultrasound
2013;21(3):148-151
- CountryRepublic of Korea
- Language:English
-
Abstract:
A 30-year-old female patient with known hypertrophic cardiomyopathy (HCMP) was admitted for recurrent syncope episodes. Electrocardiogram (ECG) showed 2 : 1 atrioventricular (AV) block. Stress echocardiography with bicycle showed high grade AV block at high stage of the exercise associated with exercise intolerance and dyspnea. Twenty-four hour ECG monitoring also revealed high grade AV block and 1 episode of non-sustained ventricular tachycardia. Implantable cardioverter/defibrillator-pacemaker (ICD-P) was inserted. After implantation of ICD-P, conduction disturbance and exercise intolerance were improved. AV block is a rare complication HCMP. There are just a few case reports that present symptoms caused by conduction disturbance in HCMP. This case describes repeated syncope episodes and exercise intolerance caused by conduction disturbance during exercise in HCMP patient. For evaluating the cause of syncope in HCMP, stress echocardiography can be helpful to understand the probable mechanism of syncope.
