Circadian disruption of brain temperature and heart rate in two periods after intracerebral hemorrhage surgery: a retrospective study

60.8% of patients exhibited postoperative brain temperature rhythms after intracerebral hemorrhage surgery.

• Circadian rhythms in brain temperature and heart rate were identified in 60.8% and 36.4% of patients, respectively.
• Transitions in brain temperature and heart rate rhythms occurred in 35.1% and 43.2% of patients.
• Age, initial Glasgow Coma Scale (GCS) score, brain temperature rhythm during the second postoperative period, and heart rate average during the first period were identified as independent predictors of 1-year functional outcomes.
• Only the initial GCS score was associated with mortality.
• Dynamic changes in brain temperature and heart rate rhythms after surgery may provide additional prognostic information beyond standard clinical assessments.

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