[abstract] A RADIANT-HEAT BANDAGE INCREASES ABDOMINAL SUBCUTANEOUS OXYGEN TENSION AND TEMPERATURE

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[abstract] A RADIANT-HEAT BANDAGE INCREASES ABDOMINAL SUBCUTANEOUS OXYGEN TENSION AND TEMPERATURE

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Title: [abstract] A RADIANT-HEAT BANDAGE INCREASES ABDOMINAL SUBCUTANEOUS OXYGEN TENSION AND TEMPERATURE
Author: West, JM; Hopf, HW; Hunt, TK
Abstract: BACKGROUND: Low subcutaneous wound oxygen tension (PsqO2), predicts a high rate of wound infection. Mild hypothermia produces prolonged subcutaneous tissue hypoxia. Local warming can overcome both thermoregulatory and sympathetically induced vasoconstriction. We performed this study to establish the effects of a new variable-temperature radiant-heat bandage (Augustine Medical, Inc.) on PsqO2 and subcutaneous temperature (Tsq). METHODS: PsqO2 and Tsq were measured (Licox PO2 computer, Medical Systems Corp.) in two 5 cm saline-filled Silastic(r) tonometers that were placed subcutaneously, one on each side of the lower abdomen, in 4 healthy volunteers. After a stable baseline was achieved, a radiant-heat bandage was placed over each site. One bandage (randomly chosen) served as an unheated control. The other was heated for 30 min at each of 5 temperature settings: unheated, 35 C, 38 C, 41 C, and 45 C. Measurement continued for at least 30 min after heating ceased. Subjects breathed 50percent O2 by face tent throughout the study. RESULTS: :PsqO2:(mmHg):Ts:( C) :H:C:H:C Unheated:-0.9:3.4:2.0:2.3 35 C:7.7:0.4:4.8:3.7 38 C:20.9:2.1:6.9:4.4 41 C:27.6:3.9:7.8:4.6 45 C:45.0:16.0:8.8:4.8 Unheated:67.4:30.7:5.2:4.6 Fig. 1: Percent change compared to baseline. H = heated side; C = control side. = p less than 0.05 compared to baseline. CONCLUSION: Radiant heat increased PsqO2 and Tsq in a dose dependent fashion, even when bandage temperature was less than core temperature. PsqO2 and Tsq in adjacent tissue also increased, though less, possibly as a result of thermoregulatory vasodilation. PsqO2 continued to increase after heating ceased, although Tsq rapidly fell towards baseline. PsqO2 remained elevated for at least 1 h. Intermittent local warming may offer considerable advantage. Supported by NIH GM27345 and Augustine Medical, Inc.
Description: Undersea and Hyperbaric Medical Society, Inc. (http://www.uhms.org )
URI: http://archive.rubicon-foundation.org/455
Date: 1996

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  • UHMS Meeting Abstracts
    This is a collection of the published abstracts from the Undersea and Hyperbaric Medical Society (UHMS) annual meetings.

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