不同空腹血糖水平的妊娠期糖尿病患者血糖波動特點及飲食治療對其影響
[Abstract]:Background: Gestational hyperglycemia includes diabetes mellitus in pregnancy (DIP) and gestational diabetes mellitus (GDM), newly diagnosed hyperglycemia in pregnancy, which were reclassified by WHO in 2013. The IDF data show that the incidence of hyperglycemia during pregnancy in pregnant women is 6.9% worldwide, while the incidence in China is as high as 7.0%. Gestational diabetes mellitus (GDM) is the most common metabolic disorder during pregnancy, which refers to the occurrence of glucose during pregnancy or the first discovery of different levels of glucose. The incidence of gestational diabetes mellitus (GDM) is increasing year by year due to impaired tolerance. At present, the diagnostic methods and standards for gestational diabetes mellitus (GDM) have not been completely unified in the world, so the reported incidence varies greatly from 1% to 14%. Xie Xing et al. pointed out that in recent years, with the change of dietary structure and the re-setting of GDM diagnostic criteria, the diagnostic rate of GDM has assumed HAPO studies confirm that hyperglycemia during pregnancy, as the most common medical complication during pregnancy, can lead to a variety of adverse pregnancy outcomes, such as macrosomia, preeclampsia, pregnancy-induced hypertension, premature delivery, shoulder dystocia, birth trauma, cesarean section, neonatal hypoglycemia, neonatal hyperbilirubinemia. Blood glucose fluctuation is one of the characteristic manifestations of glucose metabolism disorder. Oxidative stress increases the production of oxygen free radicals in the body. Vascular endothelial dysfunction participates in the occurrence and development of diabetic vascular complications. With the increase of gestational age, the increase of hormones secreted by pituitary and placenta during the second and third trimesters of pregnancy leads to the aggravation of physiological insulin resistance, and the compensatory insulin secretion in pregnant women increases to 2-3 times of that in non-pregnant women to compensate for physiological insulin resistance. Chronic insulin resistance further reduces insulin sensitivity; when insulin secretion fails to meet insulin requirements during pregnancy due to islet P cell dysfunction, hyperglycemia occurs during pregnancy. The fluctuation of serum glucose in GDM patients was still higher than that in normal pregnant women, suggesting that there were still islet beta cell dysfunction and insulin resistance in postpartum GDM patients, which increased the risk of type 2 diabetes mellitus. With the development of blood glucose monitoring technology, continuous glucose monitoring (CGM), a kind of minimally invasive monitoring system similar to Holter, is becoming more and more mature. As the most advanced blood glucose monitoring technology at present, one electric signal is obtained from the probe every 10 seconds, every 5 seconds. The average signal can be stored in minutes, 288 blood glucose values can be recorded throughout the day, and blood glucose levels can be continuously monitored for 72 hours. Like other types of diabetes mellitus, dietary control is essential for the management of diabetes. Given the specificity of this stage of pregnancy, medication or insulin intervention is generally not used unless the condition is very serious. However, the overall blood glucose level and fluctuations in blood glucose in GDM patients increase and perimeter. Maternal and neonatal adverse outcomes are closely related. The American Diabetes Association (ADA) recommends that all patients with GDM should consult nutritionists as much as possible when they are diagnosed with diabetes and formulate specific nutrient allocations based on their current dietary patterns, preferences and glycemic control goals. In this study, CGM was used to monitor the blood glucose of GDM patients for more than 120 hours. The characteristics of blood glucose fluctuation in GDM patients with different fasting blood glucose levels, the relationship between blood glucose fluctuation and pregnancy outcome, and the effect of dietary therapy on blood glucose fluctuation were analyzed and discussed. Objective: To investigate the characteristics of blood glucose fluctuation and its correlation with pregnancy outcome in GDM patients with different fasting blood glucose levels on the day of OGTT test and to explore the effect of dietary therapy on blood glucose fluctuation by using dynamic glucose monitoring system (CGMS). So clinicians can better manage the perinatal blood glucose of GDM, keep the blood glucose level in the normal range during the whole pregnancy, and reduce the occurrence of adverse pregnancy outcomes. 2. Objects and methods: 1. Objectives: Retrospective collection and analysis of pregnancies hospitalized in our hospital from October 2010 to July 2015 using dynamic blood glucose monitoring system. A total of 316 patients with stage I hyperglycemia were excluded. Those diagnosed as type 1 or type 2 diabetes mellitus or other special types of diabetes mellitus or impaired glucose tolerance before pregnancy, complicated with hypertension or other endocrine and metabolic diseases, other acute or chronic diseases such as impaired liver and kidney function, or long-term use of special drugs, which affected the metabolism of carbohydrates and other drugs, such as cigarettes and alcoholic beverages, According to the diagnostic criteria of gestational diabetes mellitus in ADA guidelines, 173 GDM patients were enrolled with an average age of (31.6 + 4.8) years and gestational age of (27.69 + 4.28) weeks.2. Methods: According to the fasting plasma glucose level (FPG) on the day of OGTT test, they were divided into group A (FPG 5.1). Group B (5.1FPG 6.1mmol/L), 67; Group C (FPG 6.1mmol/L), 34. Three groups of patients were registered with general clinical data and basic laboratory tests, while CGMS was used to monitor the dynamic blood glucose and analyze the significance of various clinical indicators and dynamic blood glucose data. 3, Results 1, general clinical data: included in GDM There were 173 patients, 72 in group A (FPG 5.1 in mol/L), 67 in group B (5.1 < FPG 6.1 mmol/L), 34 in group C (FPG < 6.1 mmol/L). Age, gestational age, and TG were not significantly different among the three groups (P 0.05); with the increase of FPG level on the day of OGTT test, blood glucose at 1 hour and at 2 hours gradually increased in OGTT test; HbA1C in group B and C, BMI in pregnant women, BMI, and TG in group C. Systolic blood pressure (SBP), diastolic blood pressure (DBP) and insulin resistance (HOMA-IR) levels were significantly higher than those in group A (P 0.05), while low density lipoprotein (LDL-C), total cholesterol (TC), high density lipoprotein (HDL-C) and basal insulin secretion (HOMA-beta) levels in group C were significantly lower than those in group A (P 0.05). FPG was positively correlated with BM, SBP, DBP, TG, HbA1C and FINS of pregnant women, and negatively correlated with HDDL-C (P 0.05). Blood glucose and postprandial 1 hour, postprandial 2 hour blood glucose were also higher than A, B groups, the difference was statistically significant (P 0.05); group C after breakfast and after lunch blood glucose peak were higher than A, B groups, the difference was statistically significant (P 0.05); and group C after dinner blood glucose peak was also higher than A group, the difference was statistically significant (P 0.05). Glucose increased more significantly than lunch and dinner, the difference was statistically significant (P 0.05), and three groups of early, middle, and late meals after the peak time of blood glucose were not significantly different (P 0.05), while there was no significant difference in the incidence of hypoglycemia in three groups (P 0.05). 2.2 Glucose fluctuation parameters: C group average blood glucose fluctuation amplitude (MAGE), average blood glucose level (MB). G, time percentage of blood glucose (PT B G 6.7 mmol/L), area under blood glucose curve (AUC B G 6.7 mmol/L), daytime mean blood glucose (6:30-23:30) and nighttime mean blood glucose (23:30-6:30) were significantly higher in group A and group B than in group B (P 0.05), while the standard deviation of blood glucose (SD), fluctuation coefficient of fasting blood glucose (FPG-CV) and daytime blood glucose were significantly higher in group A, B and C (P 0.05). Mean absolute value of glucose (MODD) was not statistically significant (P 0.05); FBG was positively correlated with MBG, MAGE, LAGE, PT, AUC, daytime MBG and nighttime MBG, and the difference was statistically significant (P 0.05). 3.1 Dietary therapy required insulin treatment rate and dietary control compliance rate: A dietary treatment standard rate was 90.3%, the need for insulin treatment rate was 9.7%; B dietary treatment reached 9.7%. The standard rate was 83.1%, the insulin requirement rate was 26.9%; the standard rate of dietary therapy in group C was 58.8%, and the rate of insulin requirement was 70.6%. 3.2 Predictive factors of insulin requirement and risk factors of dietary control: Binary logistic regression analysis showed that PT (BG6.7 mmol/L) was the risk factor of dietary therapy and FPG was the risk factor of pancreas requirement. The predictive factors of insulin therapy were statistically significant (P 0.05). 3.3 points of CGMS parameters after dietary therapy: (1) After dietary therapy, the blood glucose 2 hours after breakfast, the blood glucose peak after breakfast and the blood glucose fluctuation parameter MAGE. SD were lower than before, and the MBG at night was higher than before, the difference was statistically significant (P 0.05). After breakfast, the blood glucose and blood glucose fluctuation parameters SD, PT. AUC, MBG during the day were significantly lower than those before treatment (P 0.05). (3) After dietary treatment, the blood glucose level and blood glucose fluctuation parameters at meals in group C had no significant difference (P 0.05). 4. Pregnancy outcomes (1) Delivery time, neonatal weight, and gestational outcomes (A, B, C). Neonatal blood glucose, neonatal bilirubin, cesarean section rate, incidence of neonatal hypoglycemia and macrosomia were not statistically significant (P 0.05). (2) Pearson correlation analysis showed that fasting blood glucose in GDM patients was negatively correlated with postnatal blood glucose, and positively correlated with cesarean section rate, the differences were statistically significant (P 0.05). (3) Binar. Y-logistic regression analysis showed that one-hour blood glucose, MAGE and PT values in OGTT test were risk factors for macrosomia, while fasting blood glucose was an independent risk factor for cesarean section. The difference was statistically significant (P Compared with hypoglycemia, especially postprandial hyperglycemia and nocturnal asymptomatic hypoglycemia, it is helpful to comprehensively analyze the trend, amplitude, frequency, time and causes of blood glucose fluctuation. 2. Compared with GDM patients with normal fasting blood glucose, fasting blood glucose abnormalities have higher BMI, SBP, DBP. HbAlc and FINS, and their blood glucose fluctuation index increases with the increase of fasting blood glucose. MBG, MAGE, PT, AUC, daytime MBG and nighttime MBG all showed an increasing trend. 3. OGTT test 1 hour blood glucose, MAGE and PT levels were risk factors for macrosomia, while fasting blood glucose was an independent risk factor for cesarean section. 4. With the increase of fasting blood glucose, the need for insulin treatment rate gradually increased, while the sub-catering treatment standard rate gradually decreased, PT (BG6.7m). Mol/L) is a risk factor for the attainment of the standard of dietary therapy, and FPG is a predictor of insulin therapy. 5. For FPG 6.1 mmol/L, the blood glucose fluctuation amplitude is large, the duration of hyperglycemia is long, insulin resistance is obvious, and the function of islet B cells is seriously damaged. Dietary therapy is not effective. It is recommended that insulin therapy be used as early as possible to make it as possible. Blood glucose levels remain normal throughout pregnancy and reduce adverse pregnancy outcomes.
【學位授予單位】:南方醫(yī)科大學
【學位級別】:碩士
【學位授予年份】:2016
【分類號】:R714.256
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