ten Hove Martin W, Friedman Deborah I, Patel Anil D, Irrcher Isabella, Wall Michael, McDermott Michael P
Department of Ophthalmology (MWtH, II), Queen's University and Hotel Dieu Hospital, Kingston, Ontario, Canada; Departments of Neurology and Neurotherapeutics and Ophthalmology (DIF), University of Texas Southwestern Medical Center, Dallas, Texas; Department of Ophthalmology (ADP), Dean McGee Eye Institute, University of Oklahoma, Oklahoma City, Oklahoma; Department of Neurology (MW), University of Iowa, Iowa City, Iowa; and Department of Biostatistics and Computational Biology (MPM), University of Rochester, Rochester, New York.
J Neuroophthalmol. 2016 Mar;36(1):13-9. doi: 10.1097/WNO.0000000000000322.
To examine the tolerability and adverse events reported in the Idiopathic Intracranial Hypertension Treatment Trial (IIHTT).
Randomized, double-masked, placebo-controlled clinical trial. Trial participants (n = 165) with mild visual loss concurrently receiving low-sodium weight-reduction diet plus the maximally tolerated dosage of acetazolamide (up to 4 g/d) or placebo for 6 months.
adverse events (AEs), assessment of clinical and laboratory findings at study visits.
Thirty-eight of 86 participants randomized to the acetazolamide group (44.1%) tolerated the maximum allowed dosage of 4 g/d. The average time to achieve maximum study dosage in the acetazolamide group was 13 weeks (median 12 weeks; range 10-24 weeks). A total of 676 AEs (acetazolamide, n = 480; placebo, n = 196) and 9 serious AEs (acetazolamide, n = 6; placebo, n = 3) were reported. Notably, the percentages of participants reporting at least 1 AE in the nervous, gastrointestinal, metabolic, and renal organ systems were significantly higher in the acetazolamide group (P < 0.05). The odds of paresthesia (OR 9.82; 95% CI 3.87-27.82), dysgeusia (OR ∞; 95% CI 3.99-∞), vomiting and diarrhea (OR 4.11; 95% CI 1.04-23.41), nausea (OR 2.99; 95% CI 1.26-7.49) and fatigue (OR 16.48; 95% CI 2.39-702.40) were higher in the acetazolamide group than in the placebo group.
Acetazolamide appears to have an acceptable safety profile at dosages up to 4 g/d in the treatment of idiopathic intracranial hypertension. The majority of participants in the Idiopathic Intracranial Hypertension Treatment Trial were able to tolerate acetazolamide above 1 g/d for 6 months.
研究特发性颅内高压治疗试验(IIHTT)中报告的耐受性和不良事件。
随机、双盲、安慰剂对照临床试验。试验参与者(n = 165)有轻度视力丧失,同时接受低钠减重饮食加最大耐受剂量的乙酰唑胺(最高4 g/d)或安慰剂,为期6个月。
不良事件(AE),研究访视时的临床和实验室检查结果评估。
随机分配到乙酰唑胺组的86名参与者中,有38名(44.1%)耐受了4 g/d的最大允许剂量。乙酰唑胺组达到最大研究剂量的平均时间为13周(中位数12周;范围10 - 24周)。共报告了676例不良事件(乙酰唑胺组,n = 480;安慰剂组,n = 196)和9例严重不良事件(乙酰唑胺组,n = 6;安慰剂组,n = 3)。值得注意的是,乙酰唑胺组中报告至少1例神经、胃肠、代谢和肾脏器官系统不良事件的参与者百分比显著更高(P < 0.05)。乙酰唑胺组感觉异常(OR 9.82;95% CI 3.87 - 27.82)、味觉障碍(OR ∞;95% CI 3.99 - ∞)、呕吐和腹泻(OR 4.11;95% CI 1.04 - 23.41)、恶心(OR 2.99;95% CI 1.26 - 7.49)和疲劳(OR 16.48;95% CI 2.39 - 702.40)的发生率高于安慰剂组。
在治疗特发性颅内高压时,乙酰唑胺在高达4 g/d的剂量下似乎具有可接受的安全性。特发性颅内高压治疗试验中的大多数参与者能够耐受6个月内每日1 g以上的乙酰唑胺。