Tympanic membrane-infrared thermometry against zero heat flux thermometry for detection of postoperative hypothermia in children

Lee, S.Y.; Bong, Choon Looi; Siow, Yew Nam; Allen, John C.

doi:10.1097/eja.0000000000001492

Cited by 1 publication

(2 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Meanwhile, the CCC statistics and Bland Altman analysis demonstrated almost perfect agreement. Even though the 95% CI slightly exceeded 0.5 °C as predetermined, our results are consistent with previous studies that ZHF temperature measurement has minor bias [ 20 , 21 ]. However, in this case, bias is not as important as precision.…”

Section: Discussionsupporting

confidence: 92%

See 1 more Smart Citation

Agreement of zero-heat-flux thermometry with the oesophageal and tympanic core temperature measurement in patient receiving major surgery

Liang,

Wang,

Liang

et al. 2023

J Clin Monit Comput

View full text Add to dashboard Cite

To identify and prevent perioperative hypothermia, most surgical patients require a non-invasive, accurate, convenient, and continuous core temperature method, especially for patients undergoing major surgery. This study validated the precision and accuracy of a cutaneous zero-heat-flux thermometer and its performance in detecting intraoperative hypothermia. Adults undergoing major non-cardiac surgeries with general anaesthesia were enrolled in the study. Core temperatures were measured with a zero-heat-flux thermometer, infrared tympanic membrane thermometer, and oesophagal monitoring at 15-minute intervals. Taking the average value of temperature measured in the tympanic membrane and oesophagus as a reference, we assessed the agreement using the Bland-Altman analysis and linear regression methods. Sensitivity, specificity, and predictive values of detecting hypothermia were estimated. 103 patients and one thousand sixty-eight sets of paired temperatures were analyzed. The mean difference between zero-heat-flux and the referenced measurements was -0.03 ± 0.25 °C, with 95% limits of agreement (-0.52 °C, 0.47 °C) was narrow, with 94.5% of the differences within 0.5 °C. Lin’s concordance correlation coefficient was 0.90 (95%CI 0.89–0.92). The zero-heat-flux thermometry detected hypothermia with a sensitivity of 82% and a specificity of 90%. The zero-heat-flux thermometer is in good agreement with the reference core temperature based on tympanic and oesophagal temperature monitoring in patients undergoing major surgeries, and appears high performance in detecting hypothermia.

show abstract

Section: Discussionsupporting

confidence: 92%

“…It usually represents a calibration error because of the adjustment by the software [19]. Most studies defined a limit of agreement within ± 0.5 °C between thermometers as clinically acceptable [19][20][21][22]. To avoid the sampling error of LOA, we calculated the 95% CI, which can improve the accuracy of consistency evaluation [23,24].…”

Section: Resultsmentioning

confidence: 99%