Key result
Postoperative delirium occurred in 50% of elderly cardiac surgery patients and was an independent predictor for a prolonged length of stay in the hospital, increasing it by 64%.
Why the study?
Postoperative delirium is an underdiagnosed complication after cardiac surgery associated with increased length of stay, and the concordance between systematic testing and coded diagnoses was unclear.
Does postoperative delirium increase length of stay in the ICU and hospital among elderly patients undergoing cardiac surgery?
Population
254 elective cardiac surgery patients (mean age 70.5 ± 6.4 years) at University Hospital Bonn
Comparison
Tested POD vs coded ICD diagnosis of POD, and presence vs absence of POD
Design
Subgroup study
Authors
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May support routine delirium screening in elderly cardiac surgery; leaves open whether prevention shortens hospital stay.
Observational (n=254)
No
Does postoperative delirium increase length of stay in the ICU and hospital among elderly patients undergoing cardiac surgery?
Effect estimate: +64% increase (95% CI 27-110)
Absolute Event Rate: 26.5% vs 14.6%
p-value: p=<0.001
Postoperative delirium affects half of elderly cardiac surgery patients, is highly underdiagnosed in routine care, and independently prolongs ICU and hospital length of stay.
Kirfel et al. (2021) conducted an observational in Postoperative delirium after cardiac surgery (n=254). Postoperative delirium vs. No postoperative delirium was evaluated on Length of stay in hospital (+64% increase, 95% CI 27-110, p=<0.001). Postoperative delirium occurred in 50% of elderly cardiac surgery patients and was an independent predictor for a prolonged length of stay in the hospital, increasing it by 64%.
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