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Aggressive intraoperative warming versus routine thermal management during non-cardiac surgery (PROTECT): a multicentre, parallel group, superiority trial.

Sessler DI, Pei L, Li K, Cui S, Chan MTV, Huang Y et al, on behalf of the PROTECT Investigators.

Lancet 2022; 399: 1799-1808.

Of the 5013 patients studied, those who had warming had a higher core temperature at the end of the surgery (37.1 versus 35.6 degrees C). Warming did not reduce the rate of complications: 9.9 versus 9.6 per cent, respectively, P=0.69.

Comment: This does not confirm previous studies of benefits from heating, maybe because the unheated patients did not get too cold.

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