Comparison of tracheal versus esophageal temperatures during laparoscopic surgery
Main finding · Agreement (Bland-Altman) and trending abilityResult — go to the resultMean bias −0.3 °C 95% limit of agreement CI −0.8 °C to 0.1 °CAuthors' conclusion
The temperature tracheal tube showed an acceptable overall mean bias of -0.3 °C and a percentage error of 3%, but incompatible trending ability with the esophageal temperature probe.
Study context
- Population
- Patients undergoing laparoscopic surgery36 analysed, 261 data points
- Participants
- 40 patients
- Exposure
- Temperature tracheal tube vs esophageal temperature probe
- Outcome
- Agreement between tracheal and esophageal temperatures (recorded at 15-min intervals until end of surgery)
Methodological detailsBland-Altman analysis, four-quadrant plots, polar plots
- Bland-Altman analysis
- Four-quadrant plots
- Polar plots
Main finding
Agreement (Bland-Altman) and trending ability
Mean bias
−0.3 °C
95% limit of agreement CI −0.8 °C to 0.1 °C
As reported in the abstract
- Percentage error
- 3%
- Concordance rate, four-quadrant plot (cut-off ≥ 92%)
- 94%
- Mean angular bias, polar plot (cut-off < ± 5°)
- 177°
- Radial limits of agreement, polar plot (cut-off < ± 30°)
- 52°
Observational data: associations, not effects.
Safety
Serious injuries related to temperature tracheal tube (bronchoscopy at extubation, interview 6 h postop) · six hours postoperatively
- No serious injuries
Original publication
Comparison of tracheal versus esophageal temperatures during laparoscopic surgery. Can J Anaesth. Published 11 March 2024. doi:10.
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