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Mechanical obstetrics

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https://www.readbyqxmd.com/read/28209484/successful-provision-of-inter-hospital-extracorporeal-cardiopulmonary-resuscitation-for-acute-post-partum-pulmonary-embolism
#1
C McDonald, J Laurie, S Janssens, C Zazulak, P Kotze, K Shekar
Mortality during pregnancy in a well-resourced setting is rare, but acute pulmonary embolism is one of the leading causes. We present the successful use of extracorporeal cardiopulmonary resuscitation (eCPR) in a 22-year old woman who experienced cardiopulmonary collapse following urgent caesarean section in the setting of a sub-massive pulmonary embolus. Resources and personnel to perform eCPR were not available at the maternity hospital and were recruited from an adjacent pediatric hospital. Initial care used low blood flow extracorporeal membrane oxygenation (ECMO) with pediatric ECMO circuitry, which was optimized when the team from a nearby adult cardiac hospital arrived...
January 9, 2017: International Journal of Obstetric Anesthesia
https://www.readbyqxmd.com/read/28178620/mir-944-acts-as-a-prognostic-marker-and-promotes-the-tumor-progression-in-endometrial-cancer
#2
Zhonghui He, Hong Xu, Yugang Meng, Yan Kuang
microRNA-944 (miR-944) has been reported to be deregulation and play either tumor suppressive or oncogenic function in human malignancies. Previous studies have reported that miR-944 is overexpressed in gynecological malignancies including cervical cancer and breast cancer. While, the clinical significance of miR-944 and its function in human endometrial carcinoma (EC) keep unknown. The levels of miR-944 were analyzed in 68 EC tissues and 20 normal endometrial tissues. Results showed that miR-944 was significantly overexpressed in EC tissues compared to normal endometrial tissues...
February 5, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28178046/acute-respiratory-distress-syndrome-in-pregnant-women
#3
Barret Rush, Pawel Martinka, Brett Kilb, Robert C McDermid, John H Boyd, Leo Anthony Celi
OBJECTIVE: To estimate the rate of acute respiratory distress syndrome (ARDS) in pregnant patients as well as to investigate clinical conditions associated with mortality. METHODS: We used the Nationwide Inpatient Sample from 2006 to 2012 to identify a cohort of pregnant patients who underwent mechanical ventilation for ARDS. A multivariate model predicting in-hospital mortality was created. RESULTS: A total of 55,208,382 hospitalizations from the 2006-2012 Nationwide Inpatient Samples were analyzed...
February 6, 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28168128/three-dimensional-printing-of-a-hemorrhagic-cervical-cancer-model-for-postgraduate-gynecological-training
#4
Michael Bartellas, Stephen Ryan, Gregory Doucet, Deanna Murphy, Jacqueline Turner
INTRODUCTION: A realistic hemorrhagic cervical cancer model was three-dimensionally (3D) printed and used in a postgraduate medical simulation training session. MATERIALS AND METHODS: Computer-assisted design (CAD) software was the platform of choice to create and refine the cervical model. Once the prototype was finalized, another software allowed for the addition of a neoplastic mass, which included openings for bleeding from the neoplasm and cervical os. 3D printing was done using two desktop printers and three different materials...
January 1, 2017: Curēus
https://www.readbyqxmd.com/read/28164533/possibility-of-coagulation-system-activation-determination-with-tissue-factor-in-pregnancy-complications
#5
Ludek Slavik, Martin Novak, Jana Ulehlova, Martin Prochazka, Jana Prochazkova, Veronika Lattova, Petr Polak, Radovan Pilka
BACKGROUND: In this part of the study, where we determined the causes of preeclampsia and other obstetric complications, we focused on the role of tissue factor (TF) in the activation of these pathophysiological processes. Recent findings attribute a significant part of the activation of coagulation creation of autoantibodies. Once this mechanism is activated, the antibodies induce expression of tissue factor (TF, CD142) on monocytes and vascular endothelial cells. METHODS: We have proposed a monitor activation model of the coagulation system in preeclampsia and other pregnancy complications using TF expression on monocytes by flow cytometry and simultaneous determination the TF-induced thrombin generation in plasma...
October 1, 2016: Clinical Laboratory
https://www.readbyqxmd.com/read/28163864/the-relationship-between-blood-lead-level-and-preeclampsia
#6
Fatemeh Bayat, Sedigheh Amir Ali Akbari, Atousa Dabirioskoei, Malihe Nasiri, Aliosat Mellati
INTRODUCTION: Lead is a heavy metal to which people are commonly exposed. One of the possible mechanisms of tissue damages caused by this toxic metal is oxidative stress, which in turn may cause numerous pregnancy complications such as preeclampsia. The present study was conducted to determine the relationship between maternal Blood Lead Level (BLL) and preeclampsia. METHODS: The present case-control study was conducted on 158 pregnant women admitted to a hospital in Zanjan, Iran, from August 2015 to March 2016...
December 2016: Electronic Physician
https://www.readbyqxmd.com/read/28144947/comparative-primate-obstetrics-observations-of-15-diurnal-births-in-wild-gelada-monkeys-theropithecus-gelada-and-their-implications-for-understanding-human-and-nonhuman-primate-birth-evolution
#7
Nga Nguyen, Laura M Lee, Peter J Fashing, Niina O Nurmi, Kathrine M Stewart, Taylor J Turner, Tyler S Barry, Kadie R Callingham, C Barret Goodale, Bryce S Kellogg, Ryan J Burke, Emily K Bechtold, Megan J Claase, G Anita Eriksen, Sorrel C Z Jones, Jeffrey T Kerby, Jacob B Kraus, Carrie M Miller, Thomas H Trew, Yi Zhao, Evan C Beierschmitt, Malcolm S Ramsay, Jason D Reynolds, Vivek V Venkataraman
OBJECTIVES: The birth process has been studied extensively in many human societies, yet little is known about this essential life history event in other primates. Here, we provide the most detailed account of behaviors surrounding birth for any wild nonhuman primate to date. MATERIALS AND METHODS: Over a recent ∼10-year period, we directly observed 15 diurnal births (13 live births and 2 stillbirths) among geladas (Theropithecus gelada) at Guassa, Ethiopia. During each birth, we recorded the occurrence (or absence) of 16 periparturitional events, chosen for their potential to provide comparative evolutionary insights into the factors that shaped birth behaviors in humans and other primates...
February 1, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28134666/epithelioid-trophoblastic-tumor-around-an-abdominal-cesarean-scar-a-pathologic-and-molecular-genetic-analysis
#8
Emily Han-Chung Hsiue, Chiun Hsu, Li-Hui Tseng, Tzu-Pin Lu, Kuan-Ting Kuo
Epithelioid trophoblastic tumor (ETT) is a rare chemoresistant gestational trophoblastic neoplasm that typically presents as an intrauterine lesion. To our knowledge, no isolated abdominal wall ETT around a Cesarean scar has been reported. Here we describe a 54-yr-old woman with a complex obstetric history who presented with a solitary abdominal wall tumor adjacent to the abdominal Cesarean section scar. The tumor demonstrated typical morphologic and immunophenotypic features of ETT. The gestational origin of the tumor was confirmed by microsatellite genotyping...
January 27, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28115359/involvement-of-matrix-metalloproteinases-and-their-inhibitors-in-endometrial-extracellular-matrix-turnover-in-chlamydia-trachomatis-infected-recurrent-spontaneous-aborters
#9
Namita Singh, Priya Prasad, Banashree Das, Sangita Rastogi
Mechanism underlying Chlamydia trachomatis disease pathology is not completely understood. It was hypothesized that dysregulation of extracellular matrix by matrix metalloproteinases (MMPs) might be involved in sequelae of events leading to abortion in C. trachomatis-infected women. Hence present study was undertaken to elucidate the expression of MMP-2/ MMP-9/ TIMP-1/ TIMP-3 in infected recurrent spontaneous aborters (RSA) and simultaneously ascertain effect of few cytokines (TNF-α, TGF-β1, TGF-β2)/ cyclooxygenase-2 (Cox-2) on MMPs...
January 22, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28114995/prognostic-and-therapeutic-value-of-disruptor-of-telomeric-silencing-1-like-dot1l-expression-in-patients-with-ovarian-cancer
#10
Xiaoxue Zhang, Dan Liu, Mengchen Li, Canhui Cao, Dongyi Wan, Bixin Xi, Wenqian Li, Jiahong Tan, Ji Wang, Zhongcai Wu, Ding Ma, Qinglei Gao
BACKGROUND: Epigenetics has been known to play a critical role in regulating the malignant phenotype. This study was designed to examine the expression of DOT1L (histone 3 lysine 79 methyltransferase) and H3K79 methylation in normal ovarian tissues and ovarian tumors and to explore the function of DOT1L and its underline mechanisms in ovarian cancer. METHODS: The expression of DOT1L and H3K79 methylation in 250 ovarian tumor samples and 24 normal ovarian samples was assessed by immunohistochemistry...
January 23, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28105091/effect-of-melatonin-on-the-peripheral-t-lymphocyte-cell-cycle-and-levels-of-reactive-oxygen-species-in-patients-with-premature-ovarian-failure
#11
Yanmin Li, Hongli Liu, Jing Sun, Yipeng Tian, Changzhong Li
The objective of the present study was to observe the curative effect and mechanism of melatonin for suppression of premature ovarian failure (POF). From December 2014 to June 2015, 128 patients were consecutively diagnosed with POF in the Department of Gynaecology and Obstetrics. The patients were randomly divided into the experimental and control groups. The experimental group received melatonin tablets (1-3 mg/day), while the control group received placebo tablets. The levels of six sex hormones, percentage of T lymphocytes in the G1/M phase, and levels of reactive oxygen species (ROS) were determined at four different time-points (1 day before treatment, and at 1, 3 and 6 months after treatment) in both groups...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28102332/dynamic-modeling-of-uteroplacental-blood-flow-in-iugr-indicates-vortices-and-elevated-pressure-in-the-intervillous-space-a-pilot-study
#12
Christian J Roth, Eva Haeussner, Tanja Ruebelmann, Franz V Koch, Christoph Schmitz, Hans-Georg Frank, Wolfgang A Wall
Ischemic placental disease is a concept that links intrauterine growth retardation (IUGR) and preeclampsia (PE) back to insufficient remodeling of uterine spiral arteries. The rheological consequences of insufficient remodeling of uterine spiral arteries were hypothesized to mediate the considerably later manifestation of obstetric disease. However, the micro-rheology in the intervillous space (IVS) cannot be examined clinically and rheological animal models of the human IVS do not exist. Thus, an in silico approach was implemented to provide in vivo inaccessible data...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28099310/national-institutes-of-health-funding-to-departments-of-orthopaedic-surgery-at-u-s-medical-schools
#13
Jason Silvestre, Jaimo Ahn, L Scott Levin
BACKGROUND: The National Institutes of Health (NIH) is the largest supporter of biomedical research in the U.S., yet its contribution to orthopaedic research is poorly understood. In this study, we analyzed the portfolio of NIH funding to departments of orthopaedic surgery at U.S. medical schools. METHODS: The NIH RePORT (Research Portfolio Online Reporting Tools) database was queried for NIH grants awarded to departments of orthopaedic surgery in 2014. Funding totals were determined for award mechanisms and NIH institutes...
January 18, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28099290/increased-perinatal-morbidity-and-mortality-among-asian-american-and-pacific-islander-women-in-the-united-states
#14
Maryam Siddiqui, Mohammed Minhaj, Ariel Mueller, Avery Tung, Barbara Scavone, Sarosh Rana, Sajid Shahul
BACKGROUND: Asian American/Pacific Islanders (AAPIs) are the fastest-growing racial group in the United States. Despite a higher socioeconomic status, AAPI women experience higher rates of maternal morbidity and mortality. METHODS: Using the National Inpatient Sample, we performed a retrospective cohort analysis of women who were hospitalized for delivery from 2002 to 2013. The primary outcome variable was inpatient mortality rate, and the presence of severe maternal morbidities was estimated using the Bateman Comorbidity Index, a validated tool for predicting obstetric morbidity...
March 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28090643/the-use-of-instructional-design-guidelines-to-increase-effectiveness-of-postpartum-hemorrhage-simulation-training
#15
Brena C P de Melo, Ana R Falbo, Arno M M Muijtjens, Cees P M van der Vleuten, Jeroen J G van Merriënboer
OBJECTIVE: To compare learning outcomes of postpartum hemorrhage simulation training based on either instructional design guidelines or best practice. METHODS: A pretest-post-test non-equivalent groups study was conducted among obstetrics and gynecology residents in Recife, Brazil, from June 8 to August 30, 2013. The instructional design group included 13 teams, whereas the best practice group included seven teams. A standardized task checklist was used for scenario analysis and the proportion of correctly executed tasks compared (post-test minus pretest)...
December 16, 2016: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28090634/dietary-interventions-for-fetal-growth-restriction-therapeutic-potential-of-dietary-nitrate-supplementation-in-pregnancy
#16
Elizabeth Cottrell, Teresa Tropea, Laura Ormesher, Susan Greenwood, Mark Wareing, Edward Johnstone, Jenny Myers, Colin Sibley
Fetal growth restriction (FGR) affects around 5% of pregnancies and is associated with significant short- and long-term adverse outcomes. A number of factors can increase the risk of FGR, one of which is poor maternal diet. In terms of pathology, both clinically and in many experimental models of FGR, impaired uteroplacental vascular function is implicated, leading to a reduction in the delivery of oxygen and nutrients to the developing fetus. Whilst mechanisms underpinning impaired uteroplacental vascular function are not fully understood, interventions aimed at enhancing nitric oxide (NO) bioavailability remain a key area of interest in obstetric research...
January 16, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28079409/promoting-awareness-of-neonatal-menstruation
#17
Paola Bianchi, Giuseppe Benagiano, Ivo Brosens
Neonatal uterine bleeding (NUB) has been carefully studied in the past through case reports, small series, clinical cohort studies, pathology investigations of fetal and neonatal. Following a historical recount, this review summarizes biological mechanisms conditioning NUB, starting from the persistence till birth of an 'ontogenetic progesterone resistance' (OPR), causing decreased responsiveness of target tissues to bioavailable progesterone. Several pregnancy-related conditions, such as preeclampsia, fetal growth restriction, prematurity, post-maturity and even Rhesus or ABO incompatibility, influence the occurrence of NUB...
January 12, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28073296/the-microbiome-and-complement-activation
#18
Alexis B Dunn, Anne L Dunlop, Carol J Hogue, Andrew Miller, Elizabeth J Corwin
Preterm birth (PTB, <37 completed weeks' gestation) is one of the leading obstetrical problems in the United States, affecting approximately one of every nine births. Even more concerning are the persistent racial disparities in PTB, with particularly high rates among African Americans. There are several recognized pathophysiologic pathways to PTB, including infection and/or exaggerated systemic or local inflammation. Intrauterine infection is a causal factor linked to PTB thought to result most commonly from inflammatory processes triggered by microbial invasion of bacteria ascending from the vaginal microbiome...
January 1, 2017: Biological Research for Nursing
https://www.readbyqxmd.com/read/28060899/longitudinal-profiles-of-thyroid-hormone-parameters-in-pregnancy-and-associations-with-preterm-birth
#19
Lauren E Johns, Kelly K Ferguson, Thomas F McElrath, Bhramar Mukherjee, Ellen W Seely, John D Meeker
INTRODUCTION: Overt thyroid disease in pregnancy is associated with numerous maternal and neonatal complications including preterm birth. Less is known about the contribution of trimester-specific subclinical alterations in individual thyroid hormones, especially in late gestation, on the risk of preterm birth. Herein, we examined the associations between subclinical changes in maternal thyroid hormone concentrations (TSH, total T3, free and total T4), measured at multiple time points in pregnancy, and the odds of preterm birth in pregnant women without clinical thyroid disease...
2017: PloS One
https://www.readbyqxmd.com/read/28056853/maternal-asian-ethnicity-and-obstetric-intrapartum-intervention-a-retrospective-cohort-study
#20
Maya Reddy, Euan M Wallace, Joanne C Mockler, Lynne Stewart, Michelle Knight, Ryan Hodges, Sasha Skinner, Miranda Davies-Tuck
BACKGROUND: Maternal ethnicity is a recognized risk factor for stillbirth, such that South Asian women have higher rates than their Caucasian counterparts. However, whether maternal ethnicity is a risk factor for intrapartum outcomes is less clear. The aim of this study is to explore associations between maternal country of birth, operative vaginal delivery and emergency cesarean section, and to identify possible mechanisms underlying any such associations. METHODS: We performed a retrospective cohort study of singleton term births among South Asian, South East/East Asian and Australian/New Zealand born women at an Australian tertiary hospital in 2009-2013...
January 5, 2017: BMC Pregnancy and Childbirth
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