Key result
Severe preoperative cognitive impairment was associated with significantly prolonged episodes of deep anaesthesia compared to no cognitive impairment (20.1% vs. 1.1% of monitoring time) despite comparable anaesthetic dosages.
Why the study?
The causal mechanisms linking deeper anaesthetic states to postoperative delirium remain unclear, especially regarding age-related anaesthetic sensitivity and cognitive deficits.
Does preoperative cognitive impairment predict deep anaesthesia and higher postoperative pain in elderly patients undergoing urological surgery?
Population
67 patients aged ≥ 65 years undergoing elective urological surgery lasting ≥ 60 min
Comparison
Varying preoperative MoCA scores (cognitive impairment vs normal)
Design
Exploratory observational study
Authors
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May warrant preoperative cognitive screening to limit deep anaesthesia time; leaves open causality and outcome effects.
Observational (n=67)
No
Does preoperative cognitive impairment predict deep anaesthesia and higher postoperative pain in elderly patients undergoing urological surgery?
Effect estimate: ρ=-0.270
p-value: p=0.027
Severe preoperative cognitive impairment in elderly patients is associated with prolonged episodes of deep anaesthesia and increased postoperative pain requiring treatment.
Runge et al. (2025) conducted an observational in Elderly patients undergoing elective urological surgery (n=67). Preoperative cognitive impairment vs. Normal cognitive function was evaluated on Correlation between MoCA scores and percentage of time spent in deep anaesthesia states (NI < 40) (ρ=-0.270, p=0.027). Severe preoperative cognitive impairment was associated with significantly prolonged episodes of deep anaesthesia compared to no cognitive impairment (20.1% vs. 1.1% of monitoring time) despite comparable anaesthetic dosages.
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