. Medical diagnosis for the student and practitioner. Fig. 226.—Mr. G. D. Electrocardiographic record showing right ventricular extra-systoles and overaction of the ventricles in a slowly beating heart. Left ventricular pre-ponderance indicated in high R in Lead I and deep S in Lead III. Conduction time nor-mal. Slowing of heart due to digitalis. Exaggeration of T-wave shows overaction ofventricles. ELECTROCARDIOGRAPHIC RECORDS 529 of the electrocardiograph to differentiate the side in which the ventricularextrasystole occurs, by the following characteristics. In Lead II a right ventricular ex
. Medical diagnosis for the student and practitioner. Fig. 226.—Mr. G. D. Electrocardiographic record showing right ventricular extra-systoles and overaction of the ventricles in a slowly beating heart. Left ventricular pre-ponderance indicated in high R in Lead I and deep S in Lead III. Conduction time nor-mal. Slowing of heart due to digitalis. Exaggeration of T-wave shows overaction ofventricles. ELECTROCARDIOGRAPHIC RECORDS 529 of the electrocardiograph to differentiate the side in which the ventricularextrasystole occurs, by the following characteristics. In Lead II a right ventricular extrasystole is indicated by an initialupward deflection, while the direction of the T-wave following is left ventricular extrasystole is indicated in Lead II by an initial downwarddeflection, while the direction of the T-wave following is upward. Inother words the one is a mirror image of the other. The direction of allwaves of the extrasystole occurring in Lead I may be opposite in direction tothose occurring in Leads II and III. For ex
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectdiagnos, bookyear1922
