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王炯珵 第5型磷酸雙酯酶抑制劑治療攝護腺肥大和相關下泌尿道症狀 2013/1/29 下午 01:29:27 0
原 文 題  目 A Systematic Review and Meta-analysis on the Use of Phosphodiesterase 5 Inhibitors Alone or in Combination with a-Blockers for Lower Urinary Tract Symptoms Due to Benign Prostatic Hyperplasia
作  者 Mauro Gacci 等11人
出  處 European urology
出版日期 2 0 1 2
評 論   使用第5型磷酸雙酯酶抑制劑(Phosphodiesterase 5 inhibitors, PDE5-Is),如威而剛(Sildenafil)、犀利士(Tadalafil)和樂威壯(Vardenafil)等藥物,治療男性勃起功能障礙,已有近15年的歷史,由於男性勃起功能障礙和下泌尿道症狀的相關性已被證實,所以使用PDE5-Is來治療攝護腺肥大和相關下泌尿道症狀,似乎是個合理的治療選擇。

  本篇研究是個系統性評論分析的論文,在107篇文章中,找到共12篇隨機控制試驗,其中7篇研究是比較PDE5-Is和安慰劑,人數共3214人,5篇是合併PDE5-Is和甲型交感神經阻斷劑(α-blocker)和比較單獨使用α-blockers,人數共216人,平均追蹤時間是12週。

  結果顯示:和安慰劑相比較,使用PDE5-Is明顯改善11EF(多5.5分)、IPSS(少2.8分) ,但最大尿流速則沒有差別。而使用PDE5-Is和α-blocker的合併治療比較單獨使用α-blockers,11EF、IPSS和最大尿流速都有改善。

  除此之外,病患比較年輕,比較瘦,同時治療前的下泌尿道症狀比較嚴重者(即IPSS分數較高者),PDE5-Is治療後的IPSS進步較多。在安全性方面,臉潮紅、胃食道逆流、頭痛、消化不良、背痛等是較常見的副作用。

  事實上,這樣的研究成果完全合乎基礎醫學的學理和臨床的觀察,其中最重要的一個概念就是代謝症候群(metabolic syndrome,METS),METS和性功能障礙和下泌尿道症狀的發生都有正相關性,所以我們在使用藥物治療這些相關疾病時,別忘了定期的運動,生活習慣的調整,適當的飲食,避免糖尿病和全身性發炎等,也都是很重要的衛教知識喔!!
abstract
Context: Several randomized controlled trials (RCTs) on phosphodiesterase type 5 inhibitors (PDE5-Is) have showed significant improvements in both lower urinary tract symptoms(LUTS) and erectile dysfunction (ED) in men affected by one or both conditions, without a significant increase in adverse events. However, the results are inconsistent.

Objective: Perform a systematic review and meta-analysis of available prospective and cross-sectional studies on the use of PDE5-Is alone or in combination with a1-adrenergic blockers in patients with LUTS/benign prostatic hyperplasia (BPH).

Evidence synthesis: Of 107 retrieved articles, 12 were included in the present metaanalysis:7 on PDE5-Is versus placebo, with 3214 men, and 5 on the combination of PDE5-Is with a1-adrenergic blockers versus a1-adrenergic blockers alone, with 216 men. Median follow-up of all RCTs was 12 wk. Combining the results of those trials, the use of PDE5-Is alone was associated with a significant improvement of the International Index of Erectile Function (IIEF) score (+5.5; p < 0.0001) and International Prostate Symptom Score (IPSS) (_2.8; p < 0.0001) but not the maximum flow rate (Qmax) (_0.00; p = not significant) at the end of the study as compared with placebo. The association of PDE5-Is and a1-adrenergic blockers improved the IIEF score (+3.6; p < 0.0001), IPSS score (_1.8; p = 0.05), and Qmax (+1.5; p < 0.0001) at the end of the study as compared with a-blockers alone.

Conclusions: The meta-analysis of the available cross-sectional data suggests that PDE5-Is can significantly improve LUTS and erectile function in men with BPH. PDE5-Is seem to be a promising treatment option for patients with LUTS secondary to BPH with or without ED.
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