“…In 2004, Bristow, Saxon, et al [27] in a group of selected patients, studied cardiac-resynchronization therapy alone and in conjunction with an automatic implant-A similar observation was described years later by Marriott [7]: Complete heart block implies an independence between atria and ventricles that does not always exist. Segers, as referred to above, showed that, after complete block was artificially produced in the frog's heart, atria and ventricles would sometimes begin to beat exactly in phase, most commonly in a 2 to 1 ratio.…”