The R-R interval is the same as the P-P interval plus whatever change there is in the PR interval. In typical AV Wenckebach phenomenon, the PR intervals increase with decreasing increments and the R-R ...
COMPLETE heart block, with slow, regular ventricular beats, usually gives rise to a systolic murmur. 1–4 Generally, this murmur is thought to result from the large stroke volume, which produces rapid ...