Dexmedetomidine versus Propofol Sedation Reduces Delirium after Cardiac Surgery; A Cross Sectional Study

Nouman Ahmad; Chanda Naseem; Faisal Naeem; Omama Shahid; Tauqeer Ali Shah; Sheikh Muhammad Ahmad Tariq; Amna Saleem

doi:10.70749/ijbr.v3i1.568

Authors

Nouman Ahmad Faculty of Allied Health Sciences, Superior University, Lahore, Punjab, Pakistan.
Chanda Naseem Faculty of Allied Health Sciences, Superior University, Lahore, Punjab, Pakistan.
Faisal Naeem Faculty of Allied Health Sciences, Superior University, Lahore, Punjab, Pakistan.
Omama Shahid Faculty of Allied Health Sciences, Superior University, Lahore, Punjab, Pakistan.
Tauqeer Ali Shah Faculty of Allied Health Sciences, Superior University, Lahore, Punjab, Pakistan.
Sheikh Muhammad Ahmad Tariq Kaul Associate, National Hospital, Lahore, Punjab, Pakistan.
Amna Saleem Faculty of Allied Health Sciences, Superior University, Lahore, Punjab, Pakistan.

DOI:

https://doi.org/10.70749/ijbr.v3i1.568

Keywords:

Dexmedetomidine, Propofol, Sedation, Delirium

Abstract

Introduction: Postoperative delirium (POD) represents a notable complication subsequent to heart surgery. The use of dexmedetomidine for delirium prophylaxis is still debated. The authors hypothesised that dexmedetomidine sedation after cardiac surgery would reduce the incidence of postoperative delirium (POD). Materials and Methods: This study included heart surgery patients aged ≥60, excluding those with dementia, delirium, or major depression. ICU patients received four hours of propofol or dexmedetomidine (initial dose 0.4 μg/kg, then 0.2–0.7 μg/kg/h infusion). Delirium was assessed every 12 hours for five days, with POD frequency as the primary outcome. Results: This study compared dexmedetomidine and propofol for sedation in cardiac surgery patients. The dexmedetomidine group had a shorter ICU stay (2.2 ± 0.9 vs. 3.5 ± 1.3 days, p = 0.01), earlier recovery (18.4 ± 4.5 vs. 22.7 ± 5.2 hours, p = 0.02), and lower delirium incidence (16% vs. 30%, p = 0.08). Hospital stays were shorter (2.4 ± 0.9 vs. 3.8 ± 1.2 days, p < 0.001), pain scores were lower (3.2 ± 1.1 vs. 5.6 ± 1.3, p < 0.001), and fewer required rescue analgesia (20% vs. 44%). Despite higher sedative costs, dexmedetomidine proved superior in delirium control and recovery outcomes. Conclusion: Overall, compared to propofol-based sedation, postoperative dexmedetomidine sedation had fewer cases of postoperative delirium (POD), a later start, and a shorter duration in older patients undergoing heart surgery.

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