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J. Clin. Gastroenterol:BMI不影响PPI对GERD的疗效

2013-04-16 佚名 EGMN

  美国堪萨斯大学的Prateek Sharma博士等人研究发现,不论患者的体重指数(BMI)如何,质子泵抑制剂(PPI)都能缓解胃食管反流病(GERD)症状和促进糜烂性食管炎康复(J. Clin. Gastroenterol. 2013 Feb. 24 [doi: 10.1097/MCG.0b013e31827e46be])。 Dr. Prateek Sharma   不过,研究结果也提示“

  美国堪萨斯大学的Prateek Sharma博士等人研究发现,不论患者的体重指数(BMI)如何,质子泵抑制剂(PPI)都能缓解胃食管反流病(GERD)症状和促进糜烂性食管炎康复(J. Clin. Gastroenterol. 2013 Feb. 24 [doi: 10.1097/MCG.0b013e31827e46be])。


Dr. Prateek Sharma  

不过,研究结果也提示“肥胖或超重患者可能比正常体重患者有更大的高级别糜烂性食管炎风险”。诸如PPI治疗、老年等其他因素,可能也会影响非糜烂性反流病(NERD)和糜烂性食管炎患者的症状消除几率。

  研究者对来自PPI治疗GERD的随机、双盲、多中心研究数据进行了2项事后回顾性分析。第1项分析汇总了2项研究的数据,共涉及704例NERD患者,接受埃索美拉唑20 mg(n=228)、埃索美拉唑40 mg(n=238)或安慰剂(n=238)治疗。第2项分析汇总了5项研究的数据,共涉及了11,027例糜烂性食管炎患者,接受埃索美拉唑40 mg(n=5,519)、奥美拉唑20 mg(n=2,407)或兰索拉唑30 mg(n=3,101)治疗。

  第1项分析显示,BMI对NERD患者的基线烧心症状无影响(P=0.28)。具体而言,21.4%的超重(BMI 25~35 kg/m2)/肥胖(BMI≥35 kg/m2)患者基线无烧心症状,有轻度、中度和重度烧心的患者比例分别为35.9%、32.5%和10.2%。而在体重正常(BMI<25 kg/m2)患者中,14.3%无烧心症状,有轻度、中度和重度症状者分别占38.4%、37.9%和9.4%。

  但在第2项分析中,34.7%的超重患者和32%的肥胖患者有洛杉矶(LA)C级或D级糜烂性食管炎,而体重正常者中仅有25.5%(P<0.0001)。基线时,34.2%的超重/肥胖患者有C级或D级糜烂性食管炎。

  各个BMI亚组的NERD患者的烧心消失率相似。在服用PPI的正常体重患者、超重患者和肥胖患者中,分别有36.5%、36.7%和32.3%烧心症状被成功治愈。各个BMI亚组和各个糜烂性食管炎LA级别亚组的PPI治愈率也相似。

  进一步逻辑回归分析显示,BMI并不影响烧心消失率[比值比(OR)=1.00;95%置信区间(CI),0.97~1.03;P=0.99]或糜烂性食管炎治愈率(OR=1.01;95%CI,1.00~1.02;P=0.23)。

  不过,埃索美拉唑20 mg组的烧心消失率高于安慰剂组(OR=4.26;95%CI,2.63~6.88;P<0.0001),埃索美拉唑40 mg组高于安慰剂组(OR=4.0;95%CI,2.48~6.44;P<0.0001),老年患者高于非老年患者(OR=1.0;95%CI,1.0~1.0;P=0.0041),男性高于女性(OR=1.50;95%CI,1.04~2.14;P=0.0284)。

  此外,埃索美拉唑40 mg组的糜烂性食管炎治愈率高于奥美拉唑20 mg组(OR=1.70;95%CI,1.44~2.01;P<0.0001),兰索拉唑30 mg组高于奥美拉唑20 mg组(OR=1.30;95%CI,1.05~1.62;P=0.0183),老年患者高于中青年患者(OR=1.02;95%CI,1.01~1.02;P<0.0001),食管裂孔疝患者高于非食管裂孔疝患者(OR=1.21;95%CI,1.08~1.35;P=0.0011)。

  这2项汇总分析的局限性在于,是对并非以评估肥胖对GERD症状严重程度或治疗成功率的影响为目标的临床有效性研究开展的事后分析。但研究者认为这些分析结果因巨大样本量而具有“可观的统计学效力”。

BMI相关的拓展阅读:


原文阅读:BMI does not influence PPI effectiveness in GERD or erosive esophagitis
Proton pump inhibitors resolve symptoms of gastroesophageal reflux disease and promote healing of erosive esophagitis regardless of a patient’s body mass index, according to a new study.
However, research findings "suggest that obese or overweight patients may be at a greater risk of advanced grades of erosive esophagitis than patients with normal weight," reported Dr. Prateek Sharma of the University of Kansas, Kansas City, Mo., and his associates (J. Clin. Gastroenterol. 2013 Feb. 24 [doi: 10.1097/MCG.0b013e31827e46be]).
Other factors such as PPI treatment and older age may also influence the odds of symptom resolution in nonerosive reflux disease (NERD) and erosive esophagitis patients.
Investigators conducted two post hoc retrospective analyses of pooled data from randomized, double-blind, multicenter studies of patients with GERD treated with PPIs.
The first analysis consisted of two studies assessing 704 subjects with NERD who received esomeprazole 20 mg (n = 228), esomeprazole 40 mg (n = 238) or placebo (n = 238).
The second analysis pooled data from five studies of 11,027 patients with erosive esophagitis treated with esomeprazole 40 mg (n = 5,519), omeprazole 20 mg (n = 2,407), or lansoprazole 30 mg (n = 3,101).
Patients were analyzed in three groups: normal weight, overweight, and obese, defined as BMI <25 kg/m2, 25 to <35 kg/m2, and greater than or equal to 35 kg/m2, respectively.

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    2013-10-15 许安
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    2013-04-18 mashirong

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