Cardiothoracic & vascular anesthesia
Intraoperative zero-heat-flux thermometry overestimates nasopharyngeal temperature by 0.39 °C: an observational study in patients undergoing congenital heart surgery
Study context
- Population
- Pediatric and adult patients undergoing surgery for congenital heart disease47 patients
- Exposure
- Zero-heat-flux SpotOn and Tcore (Tcore), and vesical temperature, vs nasopharyngeal temperature
- TSpotOnn = 1,073
- Tcoren = 874
- Tvesn = 1,102
- Outcome
- Accuracy and precision vs TNPH (Bland-Altman)
Methodological detailsmethod comparison (Bland-Altman)
- Method comparison (Bland-Altman)
Main finding
As reported in the abstract
Agreement with TNPH
| Outcome | TSpotOn | Tcore | Tves |
|---|---|---|---|
| Agreement with TNPH | accuracy - 0.39 (precision - 1.12 and 0.35) °C | accuracy −0.09 (precision −0.88–0.71) °C | accuracy 0.07 (precision - 1.90 to 2.05) °C |
| PoD ≤ 0.5 °C | 71% | 71% | 60% |
| LCC | 0.9455 | 0.9510 | 0.9322 |
Observational data: associations, not effects.
Further findings
Lower recording limit
- Not recordable non-invasively below (TSpotOn), °C
- 25.2
- Not recordable non-invasively below (Tcore)
- 27.1
- Lower temperatures recorded only with Tves
Original publication
Intraoperative zero-heat-flux thermometry overestimates nasopharyngeal temperature by 0.39 °C: an observational study in patients undergoing congenital heart surgery. J Clin Monit Comput. Published 10 August 2024. doi:10.
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