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  • Title: A comparison of sedation with dexmedetomidine or propofol during shockwave lithotripsy: a randomized controlled trial.
    Author: Kaygusuz K, Gokce G, Gursoy S, Ayan S, Mimaroglu C, Gultekin Y.
    Journal: Anesth Analg; 2008 Jan; 106(1):114-9, table of contents. PubMed ID: 18165564.
    Abstract:
    BACKGROUND: Dexmedetomidine, because it has both sedative and analgesic properties, may be suitable for conscious sedation during painful procedures. Extracorporeal shockwave lithotripsy (ESWL) is a minimal to mildly painful procedure that requires conscious sedation. We thus evaluated the utility of dexmedetomidine compared with propofol during an ESWL procedure. METHODS: Forty-six patients were randomly allocated into two groups to receive either dexmedetomidine or propofol for elective ESWL. Dexmedetomidine was infused at 6 microg x kg(-1) x h(-1) for 10 min followed by an infusion rate of 0.2 microg x kg(-1) x h(-1). Propofol was infused at 6 mg x kg(-1) x h(-1) for 10 min followed by an infusion of 2.4 mg x kg(-1) x h(-1). Fentanyl 1 microg/kg IV was given to all patients 10 min before ESWL. Pain intensity was evaluated with a visual analog scale at 5-min intervals during ESWL (10-35 min). Sedation was determined using the Observer's Assessment of Alertness/Sedation. The Observer's Assessment of Alertness/ Sedation scores and hemodynamic and respiratory variables were recorded regularly during ESWL (35 min) and up to 85 min after. RESULTS: Forty patients were evaluated. Visual analog scale values with dexmedetomidine were significantly lower than those with propofol only at the 25-35 min assessments (P < 0.05). During sedation, the respiratory rate with dexmedetomidine was significantly slower but Spo2 was significantly higher than with propofol (P < 0.05). Other clinical variables were similar (P > 0.05). CONCLUSION: A combination of dexmedetomidine with fentanyl can be used safely and effectively for sedation and analgesia during ESWL.
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