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  • Title: An Evaluation of Oral Midazolam for Anxiety and Pain in First-Trimester Surgical Abortion: A Randomized Controlled Trial.
    Author: Bayer LL, Edelman AB, Fu R, Lambert WE, Nichols MD, Bednarek PH, Miller K, Jensen JT.
    Journal: Obstet Gynecol; 2015 Jul; 126(1):37-46. PubMed ID: 26241254.
    Abstract:
    OBJECTIVE: To estimate the effect of oral midazolam on patient pain and anxiety perception during first-trimester surgical abortion. METHODS: Between May and December 2013, we conducted a randomized, double-blind, placebo-controlled trial. Patients between 6 0/7 and 10 6/7 weeks of gestation received 10 mg oral midazolam or placebo 30-60 minutes before surgical abortion. All patients received ibuprofen and a paracervical block. We powered the study (power=80%; significance level=.025) to detect a 15-mm difference in our two a priori primary outcomes of pain and anxiety with uterine aspiration on a 100-mm visual analog scale. Secondary outcomes were pain and anxiety at additional time points, memory, satisfaction, side effects, and adverse events. RESULTS: Demographics were similar between groups (placebo=62, midazolam=62). Compared with those randomized to placebo, patients who received midazolam had significantly less anxiety preoperatively (room entry: 51.4 mm compared with 34.5 mm, P<.001; positioning: 56.6 mm compared with 45.4 mm, P=.02). There was no difference in pain (P=.28) or anxiety (P=.14) during uterine aspiration or at other procedural time points. A significantly greater number of patients in the midazolam group reported partial amnesia (31/61 compared with 16/61, P=.005) and dizziness (30/61 compared with 18/61, P=.03). Controlling for baseline differences, patients who received midazolam reported more postoperative sleepiness (P<.001) and less postoperative nausea (P=.004). There was no difference in overall satisfaction (P=.88). CONCLUSION: Although oral midazolam reduces preprocedural anxiety, it does not reduce pain or anxiety with uterine aspiration during first-trimester surgical abortions. CLINICAL TRIAL REGISTRATION: ClinicalTrials.gov, www.clinicaltrials.gov, NCT01830881. LEVEL OF EVIDENCE: I.
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