1. Effect of low-dose dexmedetomidine to prolong spinal anesthesia in elderly patients: a prospective randomized controlled study.
- Author
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Sangkum, Lisa, Termpornlert, Sivaporn, Tunprasit, Choosak, Rathanasutthajohn, Chatchayapa, Komonhirun, Rojnarin, and Dusitkasem, Sasima
- Subjects
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SPINAL anesthesia , *PHYSIOLOGIC salines , *T-test (Statistics) , *POSTOPERATIVE pain , *STATISTICAL sampling , *SAMPLE size (Statistics) , *FISHER exact test , *RANDOMIZED controlled trials , *TREATMENT effectiveness , *MANN Whitney U Test , *DESCRIPTIVE statistics , *INTRAVENOUS therapy , *LONGITUDINAL method , *BRADYCARDIA , *DRUG efficacy , *TRANSURETHRAL prostatectomy , *COMPARATIVE studies , *DATA analysis software , *IMIDAZOLES , *REGRESSION analysis , *TIME , *HYPOTENSION , *PHARMACODYNAMICS , *EVALUATION , *OLD age - Abstract
Background: Spinal anesthesia for transurethral resection of the prostate (TURP) has a short duration, which poses challenges for postoperative pain management. The present study aimed to investigate the effects of intravenous (IV) dexmedetomidine at a dosage of 0.4 µg/kg in prolonging the duration of spinal anesthesia and minimizing postoperative pain in elderly patients undergoing TURP. Methods: This prospective randomized controlled trial enrolled 38 patients aged 60–80 years who underwent elective TURP with spinal anesthesia. The patients were randomly assigned to two treatment groups: Group D received IV 0.4 µg/kg dexmedetomidine, whereas Group C received IV normal saline after spinal anesthesia administration. The primary outcome was the time to 2-dermatome regression. Results: The 2-dermatome regression time was longer in Group D than in Group C (104.44 ± 16.97 min vs. 80.63 ± 15.59 min, p < 0.05). The peak sensory block levels were significantly higher in Group D [T7 (T6–T8)] than in Group C [T10 (T7–T10)] (p = 0.017). The incidence of hypotension and bradycardia and postoperative pain at 0, 6, 12, and 24 h were not different between two groups. Conclusion: Intravenous dexmedetomidine at a dosage of 0.4 µg/kg significantly prolongs the duration of spinal sensory blockade. Although postoperative analgesia was not different, it provided hemodynamic stability without increasing the side effects. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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