منابع مشابه
Three 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 کاملVentricular quadrigeminy as a manifestation of concealed bigeminy.
Long rhythm strips were analyzed from five patients with frequent ventricular extrasystoles. The predominant pattern was quadrigeminal; i.e., three sinus beats between extrasystoles. However, about 20% of the interectopic intervals contained numbers of sinus beats (S) greater than three. Analysis of the distribution of such values of S greater than 3 revealed that there were many more odd than ...
متن کاملEcho Assessment ofPVR
coupling interval, and the "rule of multiples." Saishin-Igaku 15: 1865, 1960 2. Schamroth L, Marriott JHL: Intermittent ventricular parasystole with observations on its relationship to extrasystolic bigeminy. Am J Cardiol 7: 799, 1961 3. Schamroth L, Marriott HJL: Concealed ventricular extrasystoles. Circulation 27: 1043, 1963 4. Schamroth L: The physiological basis of ectopic ventricular rhyth...
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 کاملBigeminy 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...
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ژورنال
عنوان ژورنال: Circulation
سال: 1975
ISSN: 0009-7322,1524-4539
DOI: 10.1161/circ.52.5.51696