A Nomogram for Estimation of the Cardiac Valve Areas
A nomogram for the estimation of cardiac valve areas by the Gorlin formula has been described. The advantages of the nomographic approach are four-fold: (1) it results in considerable time saving in doing mathematical calculations; (2) it lessens the chance of mathematical error; (3) it provides a rapid means of checking the accuracy of a valve area calculated in the conventional manner; (4) it facilitates the understanding of the relationships between the various factors employed in the valve area formula.
As a result, the nomogram will be a useful adjunct in the operation of the cardiac catheterization laboratory and in the education of its physician personnel.
- © 1965 American Heart Association, Inc.