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. Author manuscript; available in PMC: 2015 Apr 15.
Published in final edited form as: Heart Rhythm. 2012 Jan 11;9(5):823–832. doi: 10.1016/j.hrthm.2012.01.009

Figure 1. Effect of Sex Hormones on Incidence of Arrhythmias.

Figure 1

A. Dot blots of differences in arrhythmia incidences (PVC, bigeminy, couplets, triplets, non-sustained VT (nsVT), all presented as beats/two hours; sustained VT (susVT), duration in seconds). Each dot represents a 2-hour interval of an individual rabbit (n=14 in EST, n=18 in OVX and PROG rabbits). * p<0.05, ** p<0.01, *** p<0.001. B. Telemetric ECG recordings of the initiation of lethal pVT in two EST rabbits, top two rows. Indicated are R-on-T (red square), short-long-short sequences, and P waves (P) during episodes of AV 2:1 block. Bottom row shows several episodes of nsVTs following couplets in an EST rabbit. C. Incidence of major cardiac events during 8 weeks of hormone-treatment. Incidences of SCD are indicated in brackets. * p<0.05, ** p<0.01.