[Spontaneous reversion to sinus rhythm in a case of lone atrial fibrillation of fifteen years duration].
A 69-year-old male visited our clinic in 1973 because of atrial fibrillation noted during an annual check-up for the aged. Blood pressure, heart rate and CTR in chest X-ray films showed 110/80 mmHg, 150/min and 55%, respectively. There were no signs of valvular heart diseases, and a diagnosis of lone atrial fibrillation was convincing. Since then, repeated ECGs recorded twice or more a year had shown atrial fibrillation until 1988, when sinus rhythm with both first degree AV block and low P-wave amplitude appeared. The motion pattern of the anterior mitral leaflet on M mode echocardiography was abnormal with almost complete disappearance of the A-wave, whereas the motion pattern of the tricuspid valve was normal.
Imataka
K
K
Institute for Adult Diseases Asahi Life Foundation.
Naito
S
S
Seko
Y
Y
Fujii
J
J
D000368:Aged; D000369:Aged, 80 and over; D001281:Atrial Fibrillation / Q000503:physiopathology*; D016279:Atrial Function, Left; D004452:Echocardiography; D006801:Humans; D008297:Male; D012075:Remission, Spontaneous; D012849:Sinoatrial Node / Q000503:physiopathology*