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. 



I 



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



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



