Mobitz Type I (Wenckebach)

(From Lange Instant Access EKG’s and Cardiac Studies, Anil Patel.)

A: Pressure-volume loop of a single cardiac cycle. B: A reduction in ventricular filling pressure causes the loops to shift toward lower end systolic and end diastolic function. C: When afterload is increased, the loops get narrower and longer. EDPVR, end diastolic pressure-volume relationship; Ees, slope of linear ESPVR; ESPVR, end systolic pressure-volume relationship; Vo, volume axis intercept.