A. L. Hyman, M.D., F.A.C.P.; W. Myers, M.D.; K. Hyatt, M.D.
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Advances in cardiovascular surgery have indicated the necessity for precise identification of cardiovascular shunts. Inadequacies of the oxygen method for catheterization have led to incomplete surgical correction, or even to needless thoracotomy.
In 117 patients with actual or suspected shunts, catheterization was performed, using the oxygen method, together with the double catheter dye dilution, hydrogen-platinum method, or both. A step-up of 2.5 vol/100 ml between the cava and atrium, 1 vol/100 ml between atrium and ventricle, or 0.5 vol/100 ml between ventricle and pulmonary artery was required to indicate arteriovenous shunting by oxygen method. Intrathoracic detection of shunted indicator-labelled blood
Hyman AL, Myers W, Hyatt K. A Comparative Study of the Oxygen Analysis, Double Catheter Dye Solution, and Hydrogen Platinum Techniques in Detecting Cardiovascular Shunts.. Ann Intern Med. 1962;56:668–669. doi: https://doi.org/10.7326/0003-4819-56-4-668_3
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Published: Ann Intern Med. 1962;56(4):668-669.
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