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Chorioamnionitis

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https://www.readbyqxmd.com/read/28715920/genital-tract-gbs-and-rate-of-histologic-chorioamnionitis-in-patients-with-preterm-premature-rupture-of-membrane
#1
Krunal Patel, Shauna Williams, George Guirguis, Lisa Gittens-Williams, Joseph Apuzzio
INTRODUCTION: Histologic chorioamnionitis (HC) is a common finding in the placenta from patients with preterm premature rupture of membranes (PPROM). The purpose of this study is to determine if HC differs based on the Group B streptococcus (GBS) status in patients managed expectantly with PPROM <34 weeks gestation. METHODS: A retrospective study was performed of patients admitted with PPROM between 23 0/7 and 33 6/7 weeks from 2003 to 2014 at one institution...
July 17, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28715801/fetal-urine-production-rate-in-preterm-premature-rupture-of-membranes-is-associated-with-adverse-neonatal-outcome-a-pilot-study
#2
Tehila Avitan, Lior Drukker, Hadass Pri-Chen, Ron Rabinowitz, Nurit Algur, Michael S Schimmel, Letizia Schreiber, Tali Bdolah-Abram, Arnon Samueloff, Sorina Grisaru-Granovsky
AIM: In this study, we evaluate the associations between fetal urinary production rate (FUPR), measured by ultrasound, and adverse neonatal outcome in women with preterm premature rupture of membranes (PPROM). METHODS: We conducted a prospective pilot cohort of singleton pregnancies complicated by PPROM occurring at gestational week 24 or later managed until spontaneous labor (after 48 h of admission), chorioamnionitis, or induction by protocol at 35 + 0 weeks. FUPR was evaluated by 2D sonography at admission (corrected for gestational age)...
July 18, 2017: Gynecologic and Obstetric Investigation
https://www.readbyqxmd.com/read/28710882/mid-trimester-preterm-premature-rupture-of-membranes-pprom-etiology-diagnosis-classification-international-recommendations-of-treatment-options-and-outcome
#3
REVIEW
Michael Tchirikov, Natalia Schlabritz-Loutsevitch, James Maher, Jörg Buchmann, Yuri Naberezhnev, Andreas S Winarno, Gregor Seliger
Mid-trimester preterm premature rupture of membranes (PPROM), defined as rupture of fetal membranes prior to 28 weeks of gestation, complicates approximately 0.4%-0.7% of all pregnancies. This condition is associated with a very high neonatal mortality rate as well as an increased risk of long- and short-term severe neonatal morbidity. The causes of the mid-trimester PPROM are multifactorial. Altered membrane morphology including marked swelling and disruption of the collagen network which is seen with PPROM can be triggered by bacterial products or/and pro-inflammatory cytokines...
July 15, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28700642/bacterial-communities-found-in-placental-tissues-are-associated-with-severe-chorioamnionitis-and-adverse-birth-outcomes
#4
Ronan M Doyle, Kathryn Harris, Steve Kamiza, Ulla Harjunmaa, Ulla Ashorn, Minyanga Nkhoma, Kathryn G Dewey, Kenneth Maleta, Per Ashorn, Nigel Klein
Preterm birth is a major cause of neonatal mortality and morbidity worldwide. Bacterial infection and the subsequent inflammatory response are recognised as an important cause of preterm birth. It is hypothesised that these organisms ascend the cervical canal, colonise placental tissues, cause chorioamnionitis and in severe cases infect amniotic fluid and the foetus. However, the presence of bacteria within the intrauterine cavity does not always precede chorioamnionitis or preterm birth. Whereas previous studies observing the types of bacteria present have been limited in size and the specificity of a few predetermined organisms, in this study we characterised bacteria found in placental tissues from a cohort of 1391 women in rural Malawi using 16S ribosomal RNA gene sequencing...
2017: PloS One
https://www.readbyqxmd.com/read/28698181/risk-factors-for-surgical-site-infection-following-cesarean-delivery-a-retrospective-cohort-study
#5
Felicia Ketcheson, Christy Woolcott, Victoria Allen, Joanne M Langley
BACKGROUND: The rate of cesarean delivery is increasing in North America. Surgical site infection following this operation can make it difficult to recover, care for a baby and return home. We aimed to determine the incidence of surgical site infection to 30 days following cesarean delivery, associated risk factors and whether risk factors differed for predischarge versus postdischarge infection. METHODS: We identified a retrospective cohort in Nova Scotia by linking the provincial perinatal database to hospital admissions and physician billings databases to follow women for 30 days after they had given birth by cesarean delivery between Jan...
July 11, 2017: CMAJ Open
https://www.readbyqxmd.com/read/28693123/clinical-chorioamnionitis-at-term-viii-a-rapid-mmp-8-test-for-the-identification-of-intra-amniotic-inflammation
#6
Noppadol Chaiyasit, Roberto Romero, Piya Chaemsaithong, Nikolina Docheva, Gaurav Bhatti, Juan Pedro Kusanovic, Zhong Dong, Lami Yeo, Percy Pacora, Sonia S Hassan, Offer Erez
OBJECTIVE: Clinical chorioamnionitis is the most common infection/inflammatory process diagnosed in labor and delivery units worldwide. The condition is a syndrome that can be caused by (1) intra-amniotic infection, (2) intra-amniotic inflammation without demonstrable microorganisms (i.e. sterile intra-amniotic inflammation), and (3) maternal systemic inflammation that is not associated with intra-amniotic inflammation. The presence of intra-amniotic inflammation is a risk factor for adverse maternal and neonatal outcomes in a broad range of obstetrical syndromes that includes clinical chorioamnionitis at term...
June 24, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28692888/underlying-mechanisms-of-retained-placenta-evidence-from-a-population-based-cohort-study
#7
Shirley Greenbaum, Tamar Wainstock, Doron Dukler, Elad Leron, Offer Erez
OBJECTIVE: To determine risk factors for retained placenta, and to identify supporting epidemiologic evidence for the three previously-proposed mechanisms: (i) invasive placentation, (ii) placental hypo-perfusion, and (iii) inadequate uterine contractility. DESIGN: A retrospective population-based cohort study. SETTING AND POPULATION: Israeli population in the southern district. METHODS: Data were analyzed from a tertiary hospital database, between 1989 and 2014, using univariate tests and generalized estimating equation (GEE) multivariable models...
June 27, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28691405/significance-of-pathological-examination-of-the-placenta-with-a-focus-on-intrauterine-infection-and-fetal-growth-restriction
#8
Masahiro Nakayama
Chorioamnionitis (CAM) is associated with abortion, premature labor and neonatal disorders. In this condition, precise pathological diagnosis of the placenta is very important. Besides histological examination, macroscopic examination of the placenta is indispensable. Diagnostic points and complications of CAM are emphasized in this paper. Blanc's classification (revised by Nakayama) is introduced for the accurate determination of CAM stage. Principles of classification based on the causes of fetal growth restriction (FGR) (mainly resulting from placental pathology) are also described...
July 10, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28690864/surgical-site-infections-after-cesarean-delivery-epidemiology-prevention-and-treatment
#9
REVIEW
Tetsuya Kawakita, Helain J Landy
Cesarean delivery (CD) is one of the most common procedures performed in the United States, accounting for 32% of all deliveries. Postpartum surgical site infection (SSI), wound infection and endometritis is a major cause of prolonged hospital stay and poses a burden to the health care system. SSIs complicate a significant number of patients who undergo CD - 2-7% will experience sound infections and 2-16% will develop endometritis. Many risk factors for SSI have been described. These include maternal factors (such as tobacco use; limited prenatal care; obesity; corticosteroid use; nulliparity; twin gestations; and previous CD), intrapartum and operative factors (such as chorioamnionitis; premature rupture of membranes; prolonged rupture of membranes; prolonged labor, particularly prolonged second stage; large incision length; subcutaneous tissue thickness > 3 cm; subcutaneous hematoma; lack of antibiotic prophylaxis; emergency delivery; and excessive blood loss), and obstetrical care on the teaching service of an academic institution...
2017: Maternal Health, Neonatology and Perinatology
https://www.readbyqxmd.com/read/28675256/-prevalence-and-risk-factors-for-periventricular-leukomalacia-in-preterm-infants-a-systematic-review
#10
G J Romero-Guzman, F Lopez-Munoz
INTRODUCTION: There is a huge disparity in the description of the prevalence and risk factors of periventricular leukomalacia in preterm infants. AIMS: To describe and compare, through a systematic review of the literature, the prevalence of periventricular leukomalacia in preterm infants, as well as to determine the main risk factors associated with its presentation. SUBJECTS AND METHODS: A systematic review was conducted consulting multiple databases of the last 20 years...
July 16, 2017: Revista de Neurologia
https://www.readbyqxmd.com/read/28674636/diabetes-during-pregnancy-influence-of-body-mass-index-on-composite-morbidity
#11
Amy E O'Neil Dudley, Zachary B Jenner, Hector Mendez-Figueroa, Viviana S Ellis, Suneet P Chauhan
Objective  This study aims to compare composite maternal and neonatal morbidities (MM, NM) among pregnant women with diabetes mellitus whose body mass index (BMI) at delivery was < 30 (group 1), 30.0 to 39.9 (group 2), and ≥ 40 kg/m (2) (group 3). We hypothesized that increased BMI class at delivery would be associated with worsening maternal and neonatal outcomes. Methods  This is a retrospective cohort study. MM was defined as: chorioamnionitis, wound infection, eclampsia, diabetic ketoacidosis, hypoglycemia admission, third/fourth degree laceration, and/or death...
April 2017: American Journal of Perinatology Reports
https://www.readbyqxmd.com/read/28672752/clinical-chorioamnionitis-at-term-viii-a-rapid-mmp-8-test-for-the-identification-of-intra-amniotic-inflammation
#12
Noppadol Chaiyasit, Roberto Romero, Piya Chaemsaithong, Nikolina Docheva, Gaurav Bhatti, Juan Pedro Kusanovic, Zhong Dong, Lami Yeo, Percy Pacora, Sonia S Hassan, Offer Erez
OBJECTIVE: Clinical chorioamnionitis is the most common infection/inflammatory process diagnosed in labor and delivery units worldwide. The condition is a syndrome that can be caused by (1) intra-amniotic infection, (2) intra-amniotic inflammation without demonstrable microorganisms (i.e. sterile intra-amniotic inflammation), and (3) maternal systemic inflammation that is not associated with intra-amniotic inflammation. The presence of intra-amniotic inflammation is a risk factor for adverse maternal and neonatal outcomes in a broad range of obstetrical syndromes that includes clinical chorioamnionitis at term...
July 26, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28669620/prenatal-tdap-immunization-and-risk-of-maternal-and-newborn-adverse-events
#13
J Bradley Layton, Anne M Butler, Dongmei Li, Kim A Boggess, David J Weber, Leah J McGrath, Sylvia Becker-Dreps
Many countries recommend combined tetanus toxoid, reduced diphtheria toxoid and acellular pertussis immunization (Tdap) during pregnancy to stimulate transplacental transmission of pertussis antibodies to newborns. The immune system can be altered during pregnancy, potentially resulting in differing immunization risks in pregnant women. The safety of widespread Tdap immunization during pregnancy needs to be established. Our objective was to assess whether prenatal Tdap immunization was associated with adverse birth outcomes, and to evaluate the effect of timing of Tdap administration on these outcomes...
July 24, 2017: Vaccine
https://www.readbyqxmd.com/read/28666032/pulmonary-vascular-changes-in-extremely-preterm-sheep-after-intra-amniotic-exposure-to-ureaplasma-parvum-and-lipopolysaccharide
#14
Monique G M Willems, Matthew W Kemp, Laura A Fast, Nick M M Wagemaker, Leon E W Janssen, John P Newnham, Matt S Payne, Owen B Spiller, Suhas G Kallapur, Alan H Jobe, Tammo Delhaas, Boris W Kramer, Tim G A M Wolfs
BACKGROUND: Chorioamnionitis can induce pulmonary inflammation and promote bronchopulmonary dysplasia development, distinguished by alveolar simplification and impaired vascular growth. Chorioamnionitis is more common during the extremely preterm canalicular lung stage (crucial for vascular development); and increases the risk for subsequent sepsis. We hypothesized that single/combined exposure to chronic and/or acute inflammation induces pulmonary inflammatory responses and vascular changes...
2017: PloS One
https://www.readbyqxmd.com/read/28660312/neonatal-outcome-of-small-for-gestational-age-preterm-infants
#15
Stefano Nobile, Paolo Marchionni, Virgilio P Carnielli
Small for gestational age (SGA) preterm neonates (birth weight < -2 SDS) are considered to have increased risk of bronchopulmonary dysplasia (BPD) compared to appropriate for GA (AGA) neonates. It is unclear if SGA infants have increased risk for respiratory distress syndrome (RDS) and mortality. We analyzed data from 515 neonates born <30 weeks GA, 98(19%) were SGA. SGA were compared to AGA by univariate analysis and logistic regression analysis (LRA). Significant variables at univariate analysis were IUGR (67 vs 7%, p = 0...
August 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28649463/outcomes-of-admissions-for-preterm-labor
#16
Michael W Kuzniewicz, Libby Black, Eileen M Walsh, Sherian X Li, Mara Greenberg
Objective  This study aims to quantitate the incidence of preterm labor (PTL) admissions and determine the frequency and predictors of preterm delivery (PTD) during these admissions. Study Design  Retrospective cohort of singleton pregnancies within Kaiser Permanente Northern California, 2001 to 2011. PTL admissions were defined as inpatient encounters > 24 hours with an International Classification of Diseases, 9th Revision code for PTL. Results  Total study population was 365,897 with PTL admission rate 11%...
April 2017: American Journal of Perinatology Reports
https://www.readbyqxmd.com/read/28644831/inflammatory-and-vascular-placental-lesions-are-associated-with-neonatal-amplitude-integrated-eeg-recording-in-early-premature-neonates
#17
Dorit Paz-Levy, Letizia Schreiber, Offer Erez, Sharon Goshen, Justin Richardson, VIadimir Drunov, Orna Staretz Chacham, Eilon Shany
INTRODUCTION: Placental histologic examination can assist in revealing the mechanism leading to preterm birth. Accumulating evidence suggests an association between intrauterine pathological processes, morbidity and mortality of premature infants, and their long term outcome. Neonatal brain activity is increasingly monitored in neonatal intensive care units by amplitude integrated EEG (aEEG) and indices of background activity and sleep cycling patterns were correlated with long term outcome...
2017: PloS One
https://www.readbyqxmd.com/read/28643657/impact-of-clinical-and-or-histological-chorioamnionitis-on-neurodevelopmental-outcomes-in-preterm-infants-a-literature-review
#18
REVIEW
E Maisonneuve, P-Y Ancel, L Foix-L'Hélias, S Marret, G Kayem
OBJECTIVE: To determine the impact of clinical and/or histological chorioamnionitis on neurodevelopmental outcomes in premature infants. METHODS: A review of the literature appeared in PubMed between 1997 and 2016 was conducted to examine the association between clinical and/or histological chorioamnionitis and neurologic impairment in the neonates (intraventricular hemorrhage, periventricular leukomalacia and white matter damage) and in infants (cerebral palsy and neurodevelopmental delay)...
April 2017: Journal of gynecology obstetrics and human reproduction
https://www.readbyqxmd.com/read/28630102/the-phenotype-and-function-of-preterm-infant-monocytes-implications-for-susceptibility-to-infection
#19
REVIEW
Emma de Jong, Tobias Strunk, David Burgner, Pascal M Lavoie, Andrew Currie
The extreme vulnerability of preterm infants to invasive microbial infections has been attributed to "immature" innate immune defenses. Monocytes are important innate immune sentinel cells critical in the defense against infection in blood. They achieve this via diverse mechanisms that include pathogen recognition receptor- and inflammasome-mediated detection of microbes, migration into infected tissues, and differentiation into Mϕs and dendritic cells, initiation of the inflammatory cascade by free radicals and cytokine/chemokine production, pathogen clearance by phagocytosis and intracellular killing, and the removal of apoptotic cells...
June 19, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28629241/a-model-to-predict-risk-of-postpartum-infection-after-caesarean-delivery
#20
Laura J Moulton, J Eric Jelovsek, Mark Lachiewicz, Kevin Chagin, Oluwatosin Goje
PURPOSE: To build and validate a statistical model to predict infection after Caesarean delivery (CD). METHODS: Patient and surgical variables within 30 days of CD were collected on 2419 women. Postpartum infection included surgical site infection, urinary tract infection, endomyometritis and pneumonia. The data were split into model development and internal validation (1 Jan - 31 Aug; N=1641) and temporal validation subsets (1 Sept - 31 Dec; N=778). Logistic regression models were fit to the data with concordance index and calibration curves used to assess accuracy...
June 19, 2017: Journal of Maternal-fetal & Neonatal Medicine
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