THE ANOXEMIA TEST FOR CORONARY INSUFFICIENCY

Abstract

The literature on Levy''s anoxemia test for coronary insufficiency has been reviewed, and the test evaluated as to diagnostic efficacy and safety. 200 normal controls and 20 known cases of coronary insufficiency were used. 55.0% (11 cases) of the 20 abnor-mals gave positive objective (electrocardiographic) tests. In addition, 35.0% (7 cases) more of the 20 abnormals gave positive presumptive (chest pain) tests, giving a total of 90.0%; (18 cases) positive tests, objective and/or presumptive. 4.5% (9 cases) of the 200 controls gave positive objective tests. There were no positive presumptive tests in the control group. Of this 4.5%, only 2 cases (10% of the control group) had no abnormal cardiovascular, hemic or emotional factors present which might account for a positive test. This 1.0% may be considered either as false positives, or as examples of coronary insufficiency of obscure etiology. Observing strict precautions, the test is considered a safe, office procedure. Reactions are readily relieved by the admn. of 100% oxygen. The test is considered a valuable aid in the making of the diagnosis of coronary insufficiency.