Lancet Diab & Endo:T2DM外科治疗的风险与收益

2015-05-26 沐晴 MedSci原创

越来越多研究证据表明,减肥手术可以改善肥胖合并T2DM患者的血糖代谢。近来,The Lancet Diabetes & Endocrinology杂志报道了,Sayeed Ikramuddin和他的团队的研究成果——这是一项随机对照研究,即强化生活方式干预和药物治疗vs Roux-en-Y胃旁路术在T2DM中的治疗效果,术后共进行两年随访。术后2年与术后1年的随访结果一致,即在生活方式和

越来越多研究证据表明,减肥手术可以改善肥胖合并T2DM患者的血糖代谢。近来,The
Lancet Diabetes & Endocrinology 杂志报道了,Sayeed Ikramuddin和他的团队的研究成果——这是一项随机对照研究,即强化生活方式干预和药物治疗vs Roux-en-Y胃旁路术在T2DM中的治疗效果,术后共进行两年随访。术后2年与术后1年的随访结果一致,即在生活方式和药物治疗基础上,进行手术治疗比非手术治疗效果好。根据糖尿病治疗指南,研究者选择HbA1c,LDL-c,收缩压三个指标作为衡量手术效果的复合终点。手术组中有43%达到复合终点,而非手术组只有14%达到复合终点(OR 5.1[95%CI 2.0-2.6],p=0.0004)。

目前评价减肥手术对糖尿病治疗效果的研究很少,而且研究结果一致认为减肥手术比生活方式干预联和降糖药物治疗糖尿病效果好。然而,所有这些研究都是短期的,主要将血糖控制情况作为治疗效果的评判指标。手术治疗糖尿病的长期效果,如10年及以上的研究数据,都只局限在非随机对照研究。

Sayeed Ikramuddin的研究除了关注HbA1c、LDL-c、收缩压这三个复合终点外,还有另外两个突出的贡献。其一、他们发现营养缺乏和其他不良事件在手术组中发生率较高,如骨折、感染等,有研究发现术后患者骨密度降低。然而,术后骨折的风险很低且不确切。目前需要大型长期的术后随访研究数据来解释这一问题。尽管指南要求术后补充营养元素,但是营养缺乏在胃转流术后仍很常见。其二、Ikramuddin和其团队的研究显示,术后2年手术组糖尿病缓解率和完全缓解率,与之前的研究结果相比更低。虽然这些不同,可能归因于不同研究者对糖尿病缓解的定义不同和个体差异性,及疾病的严重程度不同,但是Ikramuddin认为,减肥手术并不是适用于所有的肥胖合并T2DM患者。


关于代谢手术治疗T2DM仍然存在几个问题:一、代谢手术对肥胖合并T2DM患者的长期影响?这些影响并不能依据目前短期随访结果进行推理。几乎所有的短期结果,都是可预期可控的,如非随机的瑞士肥胖个体研究(SOS)短期随访结果与目前少数的随机研究结果一致。但是,长期随访结果(≥15年)显示,一大部分患者在术后长期随访中出现糖尿病复发。所以,目前仍需对接受肥胖手术的患者进行长期的血糖监测。

此外,术后血糖情况改善是否阻止糖尿病并发症进展,目前并不清楚。SOS研究认为,减肥手术对全因死亡率的影响与患者是否合并糖尿病无关,但是,减肥手术可以降低糖尿病微血管和大血管的发病率,而且,与病史长的患者相比,新诊断的T2DM更容易从减肥手术中获益。

Ikramuddin及其团队的研究认为,减肥手术能给肥胖合并T2DM患者带来很多健康益处。然而,长期效果仍不清楚,术后不良事件和营养元素缺乏是值得关注的问题。术后严密随访患者情况,有助于维持手术带来的健康收益,且缩小不良事件的发生率。

原始出处:

Peltonen M.Balancing risks and benefits of bariatric surgery for type 2 diabetes. Lancet Diabetes Endocrinol 2015 Jun;3(6):394-395

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    2015-11-02 howi
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    2015-06-09 ljjj1053

    认真学习了

    0

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    2015-05-31 huaxipanxing

    看看

    0

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