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  Vol. 116 No. 9, September 1981 TABLE OF CONTENTS
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Transcutaneous Oxygen and Carbon Dioxide Monitoring

Use in Adult Surgical Patients in an Intensive Care Unit

E. Neil Schachter, MD; Terence D. Rafferty, MD; Carol Knight; Robert Yocher, MPh; Richard Mentelos; Leonard Giambalvo, MD; Leonard Firestone, MD; Paul G. Barash, MD

Arch Surg. 1981;116(9):1193-1196.


Abstract



• We evaluated a combined transcutaneous oxygen and carbon dioxide (tcPo2 and tcPco2) monitor in 33 adult surgical patients in an intensive care unit. Surgical procedures included cardiothoracic, general, vascular, and orthopedic operations. Ninety-three paired, transcutaneous values were compared with simultaneously determined arterial blood gas measurements. The correlation coefficient for Pao2 was.75 (P <.01) whereas for Paco2 it was .55 (P <.01). Although statistically significant, individual transcutaneous values differed by as much as 50 mm Hg from levels determined from arterial samples. Such differences make it inappropriate to use this monitor to predict actual Pao2 or Paco2. By contrast, continuous monitoring allowed observation of acute changes associated with respiratory-care procedures and cardiovascular decompensation. Such acute changes were appreciated on the tcPo2 tracing but not the tcPco2 tracing. We conclude that the tcPo2 monitor is a valuable trend indicator of cardiopulmonary dysfunction, but that the tcPco2 monitor is not.

(Arch Surg 1981;116;1193-1196)



Author Affiliations



From the Departments of Medicine (Dr Schachter) and Anesthesiology (Drs Rafferty, Giambalvo, Firestone, and Barash, Ms Knight, and Messrs Yocher and Mentelos), Yale University School of Medicine, New Haven, Conn.


Footnotes



Accepted for publication Feb 18, 1981.

Reprint requests to Department of Internal Medicine, Yale University School of Medicine, 333 Cedar St, New Haven, CT 06510 (Dr Schachter).



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