Heat acclimation of an adult female with a large surface area of grafted skin

Jonathan E. Wingo, David A. Low, David M. Keller, Scott L. Davis, Karen J. Kowalske, Gary F. Purdue, John L. Hunt, Craig G. Crandall

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

Grafted skin has impaired blood flow and sweating responses necessary for heat dissipation. Heat acclimation improves temperature regulation in healthy individuals, but it is unknown whether heat acclimation improves temperature regulation of individuals with large areas of grafted skin. A 33-year-old woman with 75% total body surface area grafted skin 14 years postinjury performed upright cycling exercise at 45% peak oxygen uptake (50 W) for seven consecutive days in a climatic chamber set to 40°C and 30% relative humidity. The daily goal was for this patient to exercise 90 minutes (with a 5-minute break at minute 45); however, exercise was stopped when an internal temperature (T c) limit of 39.5°C was reached. The Tc limit was reached during minute 46 of exercise on day 1 of acclimation, but not until minute 65 of exercise on day 7 of acclimation. The increases in Tc and heart rate during the first 45 minutes of exercise (the minimum duration completed for all acclimation bouts) were progressively mitigated with successive days of heat acclimation. Sweat sensitivity (the increase in sweat rate per 1°C increase in Tc) in an area of uninjured skin increased by ∼30% on acclimation day 7 relative to day 1. Heat acclimation improved thermal tolerance of this patient with a large area of grafted skin, which could increase safety and comfort during thermal stress and/or exercise.

Original languageEnglish (US)
Pages (from-to)848-851
Number of pages4
JournalJournal of Burn Care and Research
Volume29
Issue number5
DOIs
Publication statusPublished - Sep 2008

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ASJC Scopus subject areas

  • Emergency Medicine
  • Rehabilitation
  • Surgery

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