Gallop Rhythm of the Heart
II. Quadruple Rhythm and its Relation to Summation and Augmented Gallops
The 2 fundamental types of gallop are ventricular gallop and atrial gallop. Adequate cardiac acceleration modifies these gallops and may produce a summation gallop, an augmented ventricular gallop, or an augmented atrial gallop. The summation and augmented gallops were examined and their relation to the 2 fundamental gallops was quantitated. The cardiac rate at which summation and augmentation occur is unique. A graph and 2 corresponding equations were derived which relate the summation cardiac rate and corresponding cycle length to familiar electrocardiographic and phonocardiographic intervals.
- © 1959 American Heart Association, Inc.