In view of evidence relating this sound to a ventricular pressure wave resulting from atrial contraction, it was thought that further information about the genesis of the atrial gallop might be obtained by altering intracardiac pressure relationships.
It may catch, long before other problems might be evident, a gallop rhythm that indicates heart disease, offering a potential for treatment much sooner.
Some of these systolic murmurs are due to an increase in right outflow tract flow velocity dynamic right ventricular outflow tract obstruction.