肛提肌外腹会阴联合直肠切除术治疗低位直肠癌

传统的腹会阴联合直肠切除术存在环周切缘阳性率高及术中穿孔率较高而影响预后的缺点,肛提肌外腹会阴联合直肠切除术可克服这些缺点．但该术式存在操作复杂、创伤大和并发症多等缺点。通过近几年的临床研究．国内外学者对该术式的适应证、手术方式改良及并发症的防治有了更加深入的认识。本文就经胍提肌外腹会阴联合直肠切除术的特点、手术适应证、研究进展及相关并发症的防治进行讨论。     

Taking a Low Glycemic Index Multi-Nutrient Supplement as Breakfast Improves Glycemic Control in Patients with Type 2 Diabetes Mellitus: A Randomized Controlled Trial

Dietary therapy is the mainstay of treatment for diabetes. This study examined the effect of a low glycemic index (GI) multi-nutrient supplement, consumed in place of breakfast, on glycemic control in patients with type 2 diabetes mellitus (T2DM). A total of 71 participants were randomized at a 2:1 ratio into either a breakfast replacement group or a normal breakfast group for a 12-week interventional study. The primary outcome measure was change in hemoglobin A1c (HbA1c). Nutrition status and somatometry were studied as secondary outcomes. The breakfast replacement group displayed a −0.2% absolute reduction in HbA1c (95% CI (confidence interval), −0.38% to −0.07%, p = 0.004), while the HbA1c of the control group increased 0.3% (95% CI, 0.1% to 0.5%, p = 0.005). The baseline Mini Nutritional Assessment score for both groups was 26.0 and no significant changes occurred following intervention. However, there was a statistically significant difference in body mass index between the treatment and control groups (p = 0.032) due to the weight gain in the control group (increased 0.5 kg, 95% CI was 0.2 to 0.9, p = 0.007). These data suggest that breakfast replacement with a low GI multi-nutrient supplement can improve glycemic and weight control in T2DM.     

Maternal Diet and Weight at 3 Months Postpartum Following a Pregnancy Intervention with a Low Glycaemic Index Diet: Results from the ROLO Randomised Control Trial

Pregnancy increases the risk of being overweight at a later time period, particularly when there is excessive gestational weight gain. There remains a paucity of data into the effect of low glycaemic index (GI) pregnancy interventions postpartum. Aim: To examine the impact of a low glycaemic index diet during pregnancy on maternal diet 3 months postpartum. Methodology: This analysis examined the diet, weight and lifestyle of 460 participants of the ROLO study 3 months postpartum. Questionnaires on weight, physical activity, breastfeeding, supplement use, food label reading and dietary habits were completed. Results: The intervention group had significantly greater weight loss from pre-pregnancy to 3 months postpartum than the control group (1.3 vs. 0.1 kg, p = 0.022). The intervention group reported greater numbers following a low glycaemic index diet (p < 0.001) and reading food labels (p = 0.032) and had a lower glycaemic load (GL) (128 vs. 145, p = 0.014) but not GI (55 vs. 55, p = 0.809) than controls. Conclusions: Low GI dietary interventions in pregnancy result in improved health-behaviours and continued reported compliance at 3 months postpartum possibly through lower dietary GL as a result of portion control. Greater levels of weight loss from pre-pregnancy to 3 months postpartum in the intervention group may have important positive implications for overweight and obesity.     

Dietary Patterns and Birth Weight—a Review

Being born with low birth weight (LBW) is recognized as a disadvantage due to risk of early growth retardation, fast catch up growth, infectious disease, developmental delay, and death during infancy and childhood, as well as development of obesity and non-communicable diseases (NCDs) later in life. LBW is an indicator of fetal response to a limiting intrauterine environment, which may imply developmental changes in organs and tissue. Numerous studies have explored the effect of maternal intake of various nutrients and specific food items on birth weight (BW). Taking into account that people have diets consisting of many different food items, extraction of dietary patterns has emerged as a common way to describe diets and explore the effects on health outcomes. The present article aims to review studies investigating the associations between dietary patterns derived from a posteriori analysis and BW, or being small for gestational age (SGA). A PubMed search was conducted with the Mesh terms “pregnancy” OR “fetal growth retardation” OR “fetal development” OR “infant, small for gestational age” OR “birth weight” OR “infant, birth weight, low” AND “diet” OR “food habits”. Final number of articles included was seven, all which assessed diet by use of food frequency questionnaire (FFQ). Five studies explored dietary patterns using principal component analyses (PCA), while one study used cluster analyses and one study logistic regression. The studies reported between one and seven dietary patterns. Those patterns positively associated with BW were labeled “nutrient dense”, “protein rich”, “health conscious”, and “Mediterranean”. Those negatively associated with BW were labeled “Western”, “processed”, “vegetarian”, “transitional”, and “wheat products”. The dietary patterns “Western” and “wheat products” were also associated with higher risk of SGA babies, whereas a “traditional” pattern in New Zealand was inversely associated with having a SGA baby. The dietary patterns associated with higher BW or lower risk of having babies born SGA were named differently, but had similar characteristics across studies, most importantly high intakes of fruits, vegetables and dairy foods. Dietary patterns associated with lower BW or higher risk for giving birth to a SGA baby were characterized by high intakes of processed and high fat meat products, sugar, confectionaries, sweets, soft drinks, and unspecified or refined grains. All studies in this review were performed in high-income countries. More research is warranted to explore such associations in low and middle income countries, where underweight babies are a major health challenge many places. Furthermore, results from studies on associations between diet and BW need to be translated into practical advice for pregnant women, especially women at high risk of giving birth to babies with LBW.     

Convenient synthesis of 18F‐radiolabeled R‐(−)‐N‐n‐propyl‐2‐(3‐fluoropropanoxy‐11‐hydroxynoraporphine

Aporphines are attractive candidates for imaging D₂ receptor function because, as agonists rather than antagonists, they are selective for the receptor in the high affinity state. In contrast, D₂ antagonists do not distinguish between the high and low affinity states, and in vitro data suggests that this distinction may be important in studying diseases characterized by D₂ dysregulation, such as schizophrenia and Parkinson's disease. Accordingly, MCL‐536 (R‐(?)‐N‐n‐propyl‐2‐(3‐[¹⁸F]fluoropropanoxy‐11‐hydroxynoraporphine) was selected for labeling with ¹⁸F based on in vitro data obtained for the non‐radioactive (¹⁹F) compound. Fluorine‐18‐labeled MCL‐536 was synthesized in 70% radiochemical yield, >99% radiochemical purity, and specific activity of 167 GBq/µmol (4.5 Ci/µmol) using p‐toluenesulfonyl (tosyl) both as a novel protecting group for the phenol and a leaving group for the radiofluorination.     

无创正压通气早期介入治疗急性左心室衰竭的临床观察

目的评价无创正压通气(NIPPV)早期介入治疗急性左心衰的临床效果。方法对28例符合早期介入指标的急性左心衰患者,在常规抗心衰基础治疗上加用NIPPV治疗,观察其临床效果、并发症及不良反应。结果 28例急性左心衰患者应用NIPPV治疗后,无一例患者需要气管插管机械通气,临床症状明显改善;NIPPV治疗前后患者的生命体征及生化结果,有明显差异(P<0.01);对比过去3年30例符合早期介入指标给予常规治疗的急性左心衰竭患者,有效率66.67%,需有创机械通气10例,有创通气率33.3%,两组有效率及有创通气率有明显差异(均P<0.05)。结论 NIPPV早期介入治疗急性左心衰效果显著,安全性高,并发症少,适宜在临床推广应用。     

强化护理干预在慢性阻塞性肺疾病合并Ⅱ型呼衰无创机械通气中的应用效果分析

目的研究观察强化护理干预在慢性阻塞性肺疾病合并Ⅱ型呼衰无创机械通气中的应用效果。方法回顾性分析90例慢性阻塞性肺疾病合并Ⅱ型呼衰患者的临床资料,均进行无创机械通气治疗,根据是否实施强化护理干预随机分为强化护理干预组与常规护理组各45例,比较两组患者呼吸纠正时间、住院天数、满意度和治疗效果。结果强化护理干预组的患者呼吸纠正时间、住院时间少于常规护理组,而患者的满意度、治疗效果优于常规护理组,均P<0.05。结论强化护理干预应用于慢性阻塞性肺疾病合并Ⅱ型呼衰无创机械通气治疗可以有效地提高治疗效果,减少住院时间,并且有利于医患关系的改善。