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  • Title: Intranasal ketorolac for postoperative pain: a phase 3, double-blind, randomized study.
    Author: Brown C, Moodie J, Bisley E, Bynum L.
    Journal: Pain Med; 2009 Sep; 10(6):1106-14. PubMed ID: 19594851.
    Abstract:
    OBJECTIVE: Analgesic efficacy and tolerability of intranasal (IN) ketorolac was evaluated in postoperative patients in a randomized, double-blind, placebo-controlled study. METHODS: Patients received IN ketorolac (31.5 mg) [DOSAGE ERROR CORRECTED] or placebo three times daily for up to 5 days, with access to morphine by patient controlled analgesia (PCA). Patients in a single-dose phase were removed from PCA 3 hours prior to the first study dose the day after surgery, and received a single IN ketorolac or placebo dose when visual analog scale scores were > or =40. RESULTS: Three hundred patients (N = 199 ketorolac, N = 101 placebo) were enrolled following primarily hysterectomies (135/300, 45%) and hip replacements (100/300, 33%); 189 (N = 115 ketorolac, N = 74 placebo) entered the single-dose phase. Mean age was 52 years (range 19-81) and 69% of patients were women. The primary efficacy endpoint, the single-dose summed pain intensity difference score at 6 hours, was significantly higher in the ketorolac group compared with placebo (83.3 vs 37.2, P < 0.007), indicating greater pain reduction with ketorolac. Morphine use was reduced by 34% in the ketorolac group compared with the placebo group. The incidence of adverse events ( approximately 98%) was similar in the two groups. The most common adverse events in both groups were nausea and vomiting. There was a trend in the ketorolac group for a lower incidence of opioid-related side effects such as constipation and pruritus. Nasal irritation occurred more frequently with ketorolac vs placebo (24% vs 2%). CONCLUSION: IN ketorolac was well tolerated and effective in treating moderate-to-severe postoperative pain in inpatients; the convenience of IN dosing suggests that its usefulness in the ambulatory care setting should be evaluated.
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