A New Technique for Measuring Oxygen Saturations of Hemoglobin and Myoglobin and its Application in Open Heart Surgery

H. R. Figulla; K. H. Leitz; J. Hoffmann; H. Kreuzer

doi:10.1055/s-2007-1014166

The Thoracic and Cardiovascular Surgeon, Table of Contents

Thorac Cardiovasc Surg 1985; 33(6): 352-353
DOI: 10.1055/s-2007-1014166

A New Technique for Measuring Oxygen Saturations of Hemoglobin and Myoglobin and its Application in Open Heart Surgery

H. R. Figulla¹ , K. H. Leitz² , J. Hoffmann³ , H. Kreuzer¹

¹Department of Cardiology,
²Department of Cardiothoracic Surgery, University Hospital Göttingen, and
³Max-Planck Institute for Systemic Physiology, Dortmund, FRG

Abstract

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Summary

Light reflected from the human heart surface was used to determine mixed hemoglobin and myoglobin oxygen saturations (O₂SAT) in the cardiac tissue.

The measurements were performed in 8 patients with coronary heart disease including Stenosis of left anterior descending coronary artery (LAD) who underwent aorto-coronary bypass surgery. At the end of the Operation the O₂SAT was measured in the supply area of the LAD either with patent or occluded coronary bypass. In 13 experiments occlusion of the bypass resulted in a decrease of O₂SAT from 74 ± 16% to 61 ± 24% (p<0.02).

A new technique is introduced and its limitations are discussed. Preliminary results of application in coronary bypass surgery demonstrate an increase in tissue oxygenation following myocardial revascularization.

Key words

Reflection photometry - Coronary blood flow - Aorto-coronary bypass surgery

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