通过筛查检测到的大多数妊娠糖尿病女性可通过单独饮食治疗充分控制。[1]Metzger BE, Buchanan TA, Coustan DR, et al. Summary and recommendations of the Fifth International Workshop-Conference on Gestational Diabetes Mellitus. Diabetes Care. 2007 Jul;30 Suppl 2:S251-60.http://care.diabetesjournals.org/content/30/Supplement_2/S251.full 如果有可能,应将所有女性转诊至注册营养师。[1]Metzger BE, Buchanan TA, Coustan DR, et al. Summary and recommendations of the Fifth International Workshop-Conference on Gestational Diabetes Mellitus. Diabetes Care. 2007 Jul;30 Suppl 2:S251-60.http://care.diabetesjournals.org/content/30/Supplement_2/S251.full[2]American Diabetes Association. Standards of medical care in diabetes - 2018. Diabetes Care. 2018 Jan 1;41 Suppl 1:S1-159.http://care.diabetesjournals.org/content/41/Supplement_1围产期并发症:有中等质量证据表明,治疗妊娠糖尿病时,首先采用饮食治疗,然后根据需要进展为胰岛素治疗,以便符合血糖目标,这样可以减少围产期重度并发症。[53]Crowther CA, Hiller JE, Moss JR, et al; Australian Carbohydrate Intolerance Study in Pregnant Women (ACHOIS) Trial Group. Effect of treatment of gestational diabetes mellitus on pregnancy outcomes. N Engl J Med. 2005 Jun 16;352(24):2477-86.http://www.nejm.org/doi/full/10.1056/NEJMoa042973#t=article受试者<200名的随机对照临床试验(RCT)、受试者>200名且方法学存在缺陷的随机对照临床试验(RCT)、方法学存在缺陷的系统评价或者高质量的观察性(队列)研究。 包括叶酸在内的常规产前保健应当继续。神经管缺陷:有高质量证据表明,补充叶酸可减少神经管缺陷。[72]Czeizel AE. Nutritional supplementation and prevention of congenital abnormalities. Curr Opin Obstet Gynecol. 1995 Apr;7(2):88-94.系统评价或者受试者>200名的随机对照临床试验(RCT)。
根据专家观点,按照妊娠前理想体重确定热量需求:正常体重者为 30 kcal/kg,体重过轻患者为 35 kcal/kg。[54]Gabbe SG, Graves CR. Management of diabetes mellitus complicating pregnancy. Obstet Gynecol. 2003 Oct;102(4):857-68. 虽然有些研究建议,将碳水化合物降至每日总热量的 40% 至 45%,可减少餐后高血糖,[55]Franz MJ, Bantle JP, Beebe CA, et al. Evidence-based nutrition principles and recommendations for the treatment and prevention of diabetes and related complications. Diabetes Care. 2002 Jan;25(1):148-98.http://care.diabetesjournals.org/content/25/1/148.full 一项关于饮食干预的 meta 分析表明,低血糖生成指数 (GI) 饮食相较于限制热量饮食、低碳水化合物饮食或其他饮食方式来说,更能降低对胰岛素需求的频率和婴儿出生体重,提示这可能是妊娠期糖尿病 (GDM) 女性最好的饮食方式。[56]Viana LV, Gross JL, Azevedo MJ. Dietary intervention in patients with gestational diabetes mellitus: a systematic review and meta-analysis of randomized clinical trials on maternal and newborn outcomes. Diabetes Care. 2014 Dec;37(12):3345-55.http://care.diabetesjournals.org/content/37/12/3345.long
妊娠期间中等强度的运动可能降低孕妇血糖水平。[2]American Diabetes Association. Standards of medical care in diabetes - 2018. Diabetes Care. 2018 Jan 1;41 Suppl 1:S1-159.http://care.diabetesjournals.org/content/41/Supplement_1[36]Mulholland C, Njoroge T, Mersereau P, et al. Comparison of guidelines available in the United States for diagnosis and management of diabetes before, during, and after pregnancy. J Womens Health (Larchmt). 2007 Jul-Aug;16(6):790-801.[57]Harrison AL, Shields N, Taylor NF, et al. Exercise improves glycaemic control in women diagnosed with gestational diabetes mellitus: a systematic review. J Physiother. 2016 Oct;62(4):188-96.http://www.journalofphysiotherapy.com/article/S1836-9553(16)30053-4/fulltext
采取自我监测血糖(一般是餐后 1~2 小时),以便评估空腹和餐后血糖,指导治疗。[2]American Diabetes Association. Standards of medical care in diabetes - 2018. Diabetes Care. 2018 Jan 1;41 Suppl 1:S1-159.http://care.diabetesjournals.org/content/41/Supplement_1 监测应当特别关注餐后血糖值。[50]de Veciana M, Major CA, Morgan MA, et al. Postprandial versus preprandial blood glucose monitoring in women with gestational diabetes mellitus requiring insulin therapy. N Engl J Med. 1995 Nov 9;333(19):1237-41.http://www.nejm.org/doi/full/10.1056/NEJM199511093331901#t=article新生儿低血糖症、巨大胎儿和剖宫产:有中等质量证据表明,在妊娠糖尿病中,需要使用胰岛素的患者实施血糖自我监测,并重点将餐后 1 小时血糖水平维持在<7.8 mmol/L (<140 mg/dL),可减少新生儿低血糖症、巨大胎儿和剖宫产。[50]de Veciana M, Major CA, Morgan MA, et al. Postprandial versus preprandial blood glucose monitoring in women with gestational diabetes mellitus requiring insulin therapy. N Engl J Med. 1995 Nov 9;333(19):1237-41.http://www.nejm.org/doi/full/10.1056/NEJM199511093331901#t=article受试者<200名的随机对照临床试验(RCT)、受试者>200名且方法学存在缺陷的随机对照临床试验(RCT)、方法学存在缺陷的系统评价或者高质量的观察性(队列)研究。
根据 ADA 指南,在妊娠糖尿病中,目标血糖值是餐前≤95 mg/dL (5.3 mmol/L),并且餐后 1 小时≤140 mg/dL (7.8 mmol/L) 或餐后 2 小时≤120 mg/dL (6.7 mmol/L)。[2]American Diabetes Association. Standards of medical care in diabetes - 2018. Diabetes Care. 2018 Jan 1;41 Suppl 1:S1-159.http://care.diabetesjournals.org/content/41/Supplement_1