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蒙恩 膀胱內注射肉毒桿菌毒素-A可減輕常規治療無效的間質性膀胱炎/膀胱疼痛症候群之膀胱疼痛 - 一項前瞻性,多中心,隨機,雙盲,安慰劑對照的臨床試驗 2015/10/30 下午 02:30:09 0
原 文 題  目 Intravesical botulinum toxin-A injections reduce bladder pain of interstitial cystitis/bladder pain syndrome refractory to conventional treatment – A prospective, multicenter, randomized, double-blind, placebo-controlled clinical trial
作  者 Hann-ChorngKuo, Yuan-Hong Jiang, Yao-Chou Tsai and Yuh-Chen Kuo
出  處 Neurourology and Urodynamics (2015)
出版日期 Article first published online: 24 APR 2015
評 論 一般認為膀胱內注射肉毒桿菌毒素-A(onabotulinumtoxinA, BoNT-A)有助於間質性膀胱炎/膀胱疼痛症候群(IC/ BPS)的治療,但其治療效果還有待驗證。這項研究結果是由花蓮慈濟醫院郭漢崇教授所領導的團隊所發表,為的是測試以膀胱內注射肉毒桿菌毒素-A治療IC / BPS的效果和安全性。
本研究採用多中心,隨機,雙盲,安慰劑對照臨床試驗患有IC / BPS且用常規治療無效的患者。患者以2:1的比例隨機分配成水擴張手術加上尿路上皮下注射肉毒桿菌毒素-A 100U(肉毒桿菌組)或同量的生理食鹽水(N / S組)兩組。主要研究終點(end point)是在8週後使用視覺模擬評分法(VAS)評估疼痛是否改善。次要研究終點包括排尿日記及尿路動力學的改變。
總共有60個病人(男性8例,女52例,年齡為50.8±13.9歲)參加此一研究,包括40位注射肉毒桿菌和20位注射生理食鹽水。在8週後,肉毒桿菌組患者的疼痛指數比在N / S組的患者顯著的減少(-2.6±2.8 vs. -0.9±2.2,P=0.021)。除了膀胱壓力檢查中的膀胱容量在肉毒桿菌注射組的病人有顯著的增加,其他變項在兩組之間沒有顯著變化。總成功率分別為肉毒桿菌組的63%(26/40)和N / S組的15%(3/20)(P=0.028)。注射肉毒桿菌毒素後的不良事件或併發症包括有排尿疼痛(dysuria)、尿路感染(UTI)及血尿(hematuria),其中以抱怨排尿疼痛的患者最多。膀胱內注射4週後,有13(32.5%)位肉毒桿菌組的患者和1(5%)位N / S組的患者抱怨排尿疼痛。到了第8週,肉毒桿菌組有16(40%)位患者的和N / S組有1位(5%)患者仍抱怨排尿疼痛。在第8週,肉毒桿菌組的不良事件發生率顯著高於N / S組(P=0.033)。
總結來說,膀胱內注射肉毒桿菌毒素-A100U可有效減輕IC / BPS患者的膀胱疼痛症狀。在注射肉毒桿菌毒素後可能會有較多的不良事件或併發症發生,但是其發生率是可接受的。
abstract placebo-controlled trial in patients with IC/BPS refractory to conventional treatment. Patients were randomized in a 2:1 ratio to hydrodistention plus suburothelial injections of BoNT-A 100U (Botox group) or the equivalent amount of normal saline (N/S group). The primary endpoint was a decrease in pain assessed using a visual analog scale (VAS) at week 8 after treatment. Secondary endpoints included voiding diary and urodynamic variables. The Wilcoxon sign rank and rank sum tests were used for statistical analyses. Results:Atotal of 60 patients (8 males, 52 females, age 50.8± 13.9 years) including 40 in the Botox and 20 in the N/S groups were enrolled. At week 8, a significantly greater reduction of pain was observed in the Botox group compared to the N/S group (-2.6 ±2.8 vs. -0.9±2.2, P=0.021). The other variables did not differ significantly between groups except for cystometric bladder capacity, which was increased significantly in the Botox group. The overall success rates were 63% (26/40) in the Botox group and 15% (3/20) in the N/S group (P=0.028). Adverse events did not differ between the groups. Conclusion:Intravesical injections of 100U of BoNT-A effectively reduced bladder pain symptoms in patients with IC/BPS. The adverse events were acceptable.
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