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Prospective comparative analysis of zero-heat-flux thermometer (SpotOn®) compared with tympanic thermometer and bladder thermometer in extremely aged patients undergoing lower extremity orthopedic surgery
Comparing a new skin temperature sensor with ear and bladder thermometers in very elderly patients during leg bone surgery
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Abstract
The SpotOn sensor demonstrated a bias of 0.07°C ± 0.58°C compared to bladder temperature measurements in elderly patients undergoing lower extremity surgery.
- Core body temperature regulation may be compromised under anesthesia, particularly in elderly patients.
- The SpotOn sensor provides a noninvasive method for continuous temperature monitoring at the skin surface.
- This study involved 45 patients aged over 80 years, examining the accuracy of the SpotOn sensor against two other reliable temperature measurement methods.
- The SpotOn sensor showed acceptable agreement with bladder and tympanic membrane thermometers, with biases of 0.07°C and -0.28°C, respectively.
- Results indicate that the SpotOn sensor is feasible for measuring body temperature in the target population.
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Key numbers
0.07°C ± 0.58°C
Bias vs. Bladder Thermometer
Bias and limits of agreement for SpotOn compared to bladder thermometer.
-0.28°C ± 0.61°C
Bias vs. Tympanic Thermometer
Bias and limits of agreement for SpotOn compared to tympanic thermometer.
10 minutes
Detection of Hypothermia
Time gap between detection of hypothermia by SpotOn and tympanic thermometer.