Evaluation of Infrared Tympanic Thermometers on Mild Hypothermic Subjects and inCold Environments

摘要

The objective of the present study was to evaluate infrared tympanic thermometers(ITTs) on hypothermic subjects and under operationally relevant ambient conditions. Eight subjects (2 of them female) were cooled in 8-10 deg C water for 25 min on three occasions. Tympanic temperatures obtained with three brands of ITTs were compared to three other core temperature estimates (esophageal, rectal, and ear canal) during the cold water immersions, and in a second series of experiments, to a temperature controlled target in cold air environments. On average, tympanic temperature (Tty) measured from the three ITT instruments was