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(Circulation. 1957;15:54.)
© 1957 American Heart Association, Inc.

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A Heart Function Test with Continuous Registration of Oxygen Consumption and Carbon Dioxide Production

J. JONGBLOED M.D.¹; C. L.C. VAN NIEUWENHUIZEN M.D.¹; H. VAN GOOR M.D.¹

¹ From the Physiological Institute of the University of Utrecht and the Department of CardiovascularSurgery of the St. Antonius Hospital, Utrecht, Netherlands.

The authors present a test of myocardial function based on the continuous registration of pulmonary exchange of oxygen and carbon dioxide during rest and a standard amount of work. The authors believe that the test is simple enough for wide clinical application. The "functiocardiogram" is of considerable physiologic and clinical interest. The normal values of the test are defined and afew examples of abnormal tests are discussed.