Sedation effect of different regimens of dexmedetomidine in day-case ophthalmic surgery

Objective To compare the sedative effect of different regimens of dexmedetomidine in day-case ophthalmic surgery. Methods Fifty patients, ASA Ⅰ-Ⅱ, who underwent elective ophthalmic surgery, were randomly divided into two groups with 25 in each: The dexmedetomidine(group A) and dexmedetomidine midazolam plus sufentanil (group B). In group A, the loading dose of dexmedetomidine was 0.7 μg/kg, followed by 0.5 μg/(kg·h) dexmedetomidine. In group B, the loading dose was midazolam 1.5 mg and sufentanil 5 μg, followed by 0.5 μg/(kg·h) dexmedetomidine. Intra-operative heart rate (HR), mean arterial pressure (MAP), bispectral index (BIS), oxygen saturation (SPO2) and Ramsay scores, Aldrete score, satisfaction score of patient and surgeon were recorded. Results At T2, T4-T6 time points, the Ramsay scores of group B were lower than that of group A (P＜0.05). The MAP was lower in group B than group A at T3-T7 time points; The HR was higher(P＜0.05) in group B than group A at T2 and T3 time points. Patient satisfaction was significant different between the two groups, the IOWA scores of group B was higher than that of group A(P＜0.05).There were no significant differences between the two groups in BIS, SPO2 and surgeon satisfaction. Conclusions The combination of dexmedetomidine midazolam plus sufentanyl appears to have more advantages in day-case ophthalmic surgery regarding hemodynamic stability, sedation effect and patient satisfaction.