CLINICAL APPLICATIONS OF ELECTROCARDIOGRAPHS 



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Fig. 85. Sinus bradycardia. Rate 32 per minute. Note the normal appearance of the electro- 

 cardiogram. P-R interval = .17 seconds. 



Fig. 86. Auricular extrasystole. Two auricular extrasystoles following two normal complexes. 

 Note the ectopic origin of the extrasystoles indicated by the inversion of P. 



Fig. 87. Ventricular extrasystoles arising in the right ventricle. 



Fig. 88. Ventricular extrasystole arising in the left ventricle. 



