All issues > Volume 32(11); 1989

Original Article

J Korean Pediatr Soc. 1989;32(11):1503-1509. Published online November 30, 1989.

Studies of false tendon in left ventricle by echocardiography.

Un Jun Hyoung¹, Jin Yong Lee¹, Jun Hee Sul¹, Sung Kyu Lee¹, Dong Shik Chin¹

¹Department of Pediatrics, Yonsei University College of Medicine, Seoul, Korea

Received: March 23, 1989;  Accepted: August 22, 1989.

Abstract

The False tendon is an anomalous chordae tendinae which attaches to abnormal sites in left ventricle. We studied the incidence of false tendon and relationship of the false tendon, functional murmur and arrhythmias using echocardiography. The results were as follow; 1) We found false tendons in 42 cases of total 307 cases, 13.6% 2) In group I (the patients who have congenital heart disease), the incidence of false tendon was 10. 6%, and in group II (the patients who have heart murmur without structural anomalies of the heart), 56.0%, and in group III (the patients who do not have heart murmur without structural anomalies of the heart), 9.3% 3) The incidence of false tendon was higher in group II than in group I or III(p<0.01) suggesting that there exists significant relationship between false tendon and functional murmur. 4) The attachment of false tendon between upper interventricular septum and lateral wall of left ventricle was found in 16 cases (38.1%), between mid-interventricular septum and lateral wall of left ventricle in 15 cases (35.7%), and between mid-interventricular septum and apex in 11 cases (26.2%). 5) In group I, the associated cardiac anomalies were ventricular septal defect (7 cases), tetralogy of Fallot (5 cases), patent ductus arteriosus (2 cases), atrial septal defect (1 case). 6) We observed cardiac arrhythmias in patients with false tendon in 42 cases (45.3%). They were sinus arrhythmia, 13 cases (31.0%), r AV block, 4 cases (9.5%), and premature ventricular contrac- tion, 2 cases (4.8%).

Keywords :False Tendon, Echocardiography