Pediatric anesthesia & critical care
Intraoperative hypothermia in the neonate population: risk factors, outcomes, and typical patterns
Authors' conclusion
This study shows that there is a high incidence of intraoperative hypothermia in the neonate population. The intraoperative body temperature of neonates dropped to the lowest point in 1-1.5 h. The greatest decrease in core temperatures occurred in preterm babies and neonates with lower preoperative temperature.
Study context
- Population
- Neonates undergoing surgery under GA with tracheal intubation (abdominal, thoracic, brain surgery, and others)
- Participants
- 401 neonates
- Exposure
- Hypothermic vs normothermic neonates
- Outcome
- Incidence of intraoperative hypothermia (< 36 °C)
Main finding
As reported in the abstract
Incidence of intraoperative hypothermia
81.05%
Observational data: associations, not effects.
Further findings
Risk factors for intraoperative hypothermia
| OR (95% CI) | P value | ||
|---|---|---|---|
| Gestational week | 0.717 (0.577–0.890) | P = 0.003 | |
| Preoperative temperature | 0.228 (0.091–0.571) | P = 0.002 | |
| Duration of anaesthesia | 1.052 (1.027–1.077) | P < 0.001 | |
| Type of surgery | 2.725 (1.292–5.747) | P = 0.008 | |
| 0.050.21520Odds ratio (log scale) |
| Outcome | P value |
|---|---|
| ICU LOS, hospital LOS, hospital costsHypothermia vs Normothermic · longer ICU LOS | P = 0.001 |
| ICU LOS, hospital LOS, hospital costsHypothermia vs Normothermic · longer hospital LOS | P < 0.001 |
| ICU LOS, hospital LOS, hospital costsHypothermia vs Normothermic · higher hospital costs | P < 0.001 |
Intensive care unit (ICU) LOS, hospital LOS, hospital costs
- No association between clinical outcomes and intraoperative hypothermia in multivariable adjusted analysis
Intraoperative temperature pattern
- Lowest point of intraoperative body temperature at approximately
- 1 h 30 min
- Lowest core temperature in neonates with preoperative hypothermia lower than
- 35 °C
- Then short plateau phase and period of slow ascent
- Greatest decrease in preterm babies and neonates with preoperative hypothermia
Original publication
Intraoperative hypothermia in the neonate population: risk factors, outcomes, and typical patterns. J Clin Monit Comput. Published 22 April 2022. doi:10.
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