Objective To assess the impact of gestational weight gain >20 pounds (more than Institute of Medicine [IOM] recommendations) on postpartum infectious morbidity in women with class III obesity. Methods This is a retrospective cohort of term, nonanomalous singleton pregnancies with body mass index ≥40 at a single institution from 2013 to 2017. Pregnancies with multiple gestation, late entry to care, and missing weight gain data are excluded. Primary outcome is a composite of postpartum infection (endometritis, urinary tract, respiratory, and wound infection). Secondary outcomes include components of composite, wound complication, readmission, and blood transfusion. Bivariate statistics compared demographics, pregnancy complications, and delivery characteristics of women exceeding IOM guidelines (GT20) with those who did not (LT20). Regression models were used to estimate adjusted odds of outcomes. Results Of 374 women, 144 (39%) gained GT20 and 230 (62%) gained LT20. Primiparous, nonsmokers more likely gained GT20 (p < 0.05). No significant difference in other demographics. Among women who gained GT20, 10.4% had postpartum infectious morbidity compared with 3.0% in LT20 (p < 0.01). Wound infection is more common in the GT20 group (7.6 vs. 2%, p = 0.02). After adjustment, women who gained GT20 had threefold higher odds of postpartum infectious morbidity (adjusted odds ratio: 3.17, 95% confidence interval: 1.17, 8.60). Conclusion Women with class III obesity who gain more than the IOM recommends are at increased risk for postpartum infectious morbidity.

2005-07-01·Rheumatology (Oxford, England)2区 · 医学

Systemic lupus erythematosus in a multiethnic US Cohort (LUMINA). XXX: association between C-reactive protein (CRP) gene polymorphisms and vascular events

2区 · 医学

Article

作者: M. A. McCrory ; H. M. Bastian ; B. J. Fessler ; Alex J. Szalai ; R. P. Kimberly ; J. C. Edberg ; S. M A Toloza ; J. Calvo-Alén ; L. M. Vilá ; G. McGwin ; J. D. Reveille ; G. S. Alarcón

OBJECTIVES:

To determine if a polymorphic GTn repeat in the intron of the C-reactive protein (CRP) gene associates with occurrence of vascular arterial events in systemic lupus erythematosus (SLE).

METHODS:

We performed a nested case-control study on the LUMINA cohort of 546 Hispanic, African-American and Caucasian SLE patients. Twenty-five patients who developed vascular arterial events (i.e. myocardial infarction, angina, coronary artery bypass graft surgery, stroke, claudication, gangrene or significant tissue loss and/or arterial peripheral thrombosis) after enrolment were selected as cases and 32 ethnically matched patients with no previous vascular arterial events served as controls. Their CRP gene GTn polymorphism and plasma CRP was determined.

RESULTS:

Patients with vascular events had more severe SLE and were more likely to have plasma CRP in the highest quintile of measured values. The overall distribution of GTn alleles for patients with vascular events had a greater number of the GT20 variant compared with controls [26.0% of alleles (13/50) vs 15.6% (10/64)]. This greater number of GT20 in patients with vascular events was observed for African-Americans [29.2% (7/24) vs 21.0% (8/38)] and Hispanics [33.0% (4/12) vs 0% (0/16)] but not for Caucasians [14.3% (2/14) vs 20.0% (2/10)]. For African-Americans and Hispanics combined (45 patients), the frequency of GT20 in those with vascular events (30.6%, 11/36) was significantly higher than in those without them (14.8%, 8/54) (P<0.05, one-tailed test for difference in proportions). When patients were categorized according to the number of GT20 alleles they carried (thus GT20/GT20, GT20/GTx or GTx/GTx, where x is any allele other than GT20), for both African-Americans and Hispanics the likelihood of vascular arterial events increased in proportion with the GT20 dose, and all GT20-homozygous patients developed vascular arterial events.

CONCLUSIONS:

The CRP GT20 variant is more likely to occur in African-American and Hispanic SLE patients than in Caucasian ones, and SLE patients carrying the GT20 allele are more likely to develop vascular arterial events.

Materials (Basel, Switzerland)

Mechanical Properties and Mechanism Analysis of Graphite Tailings Environment-Friendly Concrete

Article

作者: Li, Bochen ; Wang, Zhongrui ; Gao, Hongshuai ; Liu, Hongbo ; Duan, Hourui

The development of tailings in concrete technology is not only conducive to the realization of the goal of reducing carbon emissions, but also conducive to the inhibition the occurrence of shortages of sand and gravel supplies. In this study, graphite tailings were used to replace sand in the range of 0~100%, and the mechanical mechanism of graphite tailings concrete was examined through compressive and flexural tests. The mechanical experimental results were evaluated and verified based on concrete macroscopic failure appearance, mesoscopic failure appearance, and physical characteristics of graphite tailings. The results revealed that the concrete strength increases first and then decreases with the increase of the graphite tailings content. Compared to GT00 (GT00 is a specimen with a graphite tailings content of 0%, and so on), GT10~GT60 exhibited better mechanical properties, of which 30% was recommended as the optimal replacement rate. The mechanical properties of GT10 and GT20 had an upward trend, and GT30 had low spalling, with aggregate fragmentation found on the fracture surface. GT30 showed the best resistance to bending and deformation. The mechanical properties of GT40~GT60 had a downward trend. When the graphite tailings content was higher than 70%, the interface defects of the aggregate matrix increased, thus making it easier for cracks to propagate along the interface. Furthermore, the mechanism of graphite tailings replacing sand verified the test results from different perspectives, which provides new analysis ideas for other tailings in environment-friendly concrete.

100 项与 GT-20 (x) 相关的药物交易

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