Validity and Reliability of the CorTempTM Telemetric Pill during 50 h of Reuse in a Circulating Water Bath
2020
Pancrate, Timothée | Gosselin, Jonathan | Deshayes, Thomas.A. | Goulet, Eric D.B.
It has been shown that CorTempᵀᴹ telemetric pills (CTTPs) provide valid measures of rectal temperature when used as suppositories. While encapsulated into a condom linked to a thread, CTTPs can be inserted in and extracted from the rectum and be reused. The validity and reliability of the CTTP throughout repeated use remains to be demonstrated. Three CTTPs were compared to a YSI 401 wired rectal probe inside a circulating water bath (temperatures varying from 36.5 to 39.4 °C) during 50 h of intermittent use. Each CTTP underwent 20 trials comprising 6 protocols of varying duration: 6 · 1 h, 5 · 2 h, 4 · 3 h, 3 · 4 h and 2 · 5 h. All CTTPs were washed, switched off and disinfected after each trial to reproduce real-life use. Acceptable agreement between sensors was taken as a mean bias within ±0.27 °C. None of the pills showed signs of deterioration following 50 h of reuse. As for relative validity, where all CTTPs showed robust coefficients of determination ranging from 0.98 to 0.99, absolute validity was excellent with each CTTP showing mean biases and typical errors of the estimate (TEE) within ±0.27 °C. Comparisons between the first and last trial each CTTP underwent resulted in means biases and TEEs within ±0.27 °C and coefficients of determination ranging from 0.97 to 0.99, which indicates strong absolute and relative reliability. The present results show that CTTPs can provide valid and reliable measurements of temperature when reused up to 50 h.
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