منابع مشابه
Bigeminy on exertion.
BIGEMINY or coupling of beats may involve the atria alone, the ventricles, or both. There are many causes for coupling, the commonest and most important being extrasystoles.1 In extrasystolic bigeminy, there is a premature contraction after each normal beat. The premature beat may orig-immate from the sinoatrial node, the atrium, the atrioventricular node, the atrioventricular bundle, or the ve...
متن کاملBigeminy in ventricular interpolation.
T he occurrence of a premature beat between two consecutive conducted sinus beats is termed an interpolated premature systole or extrasystole.1 An interpolated premature ventricular systole can effect the conduction of the subsequent sinus beat by concealed retrograde penetration into the His-Purkinje system or AV node or both. This retrograde concealed penetration can result in a prolongation ...
متن کاملMechanisms of Intermittent Ventricular Bigeminy
In a previous report dealing with intermittent ventricular bigeminy due to ventricular premature systoles with fixed coupling in the presence of a grossly irregular dominant pacemaker, it was shown that the appearance and disappearance of the ectopic beats were dependent upon the length of the ventricular cycle ("rule of bigeminy"). In the present report, dealing with ventricular premature syst...
متن کاملThree variants of concealed bigeminy.
Long electrocardiographic strips were analyzed from five patients who exhibited periods of typical "concealed bigeminy," i. e., recurrent unifocal extrasystoles which were separated from one another by odd numbers of normally conducted sinus beats. However, in each of these patients, there were periods in which one of three different variants of concealed bigeminy was observed. Three patients...
متن کاملA case of atrial bigeminy.
The electrocardiogram (Fig 1) reflects a basic sinus rhythm. Each sinus beat is associated with a blocked atrial extrasystole. This is evidenced by the premature and bizarre P' wave which is superimposed upon, and deforms, the S-T segment, and which is not followed by a QRS complex. The coupling interval of each extrasystole, the P-P' interval, is very short and measures 0.32 sec. The P'-P inte...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Circulation
سال: 1963
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.28.1.32