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Uterine contraction

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https://www.readbyqxmd.com/read/28545266/-analysis-of-misssed-diagnosis-and-misdiagnosis-of-1-212-cases-with-placental-abruption
#1
D Xu, C Liang, J W Xu, J He
Objective: To investigate the risk factors and clinical manifestations of placental abruption, and to analyze the causes of missed diagnosis and misdiagnosis. Methods: A retrospective analysis was conducted in 135 584 women who delivered in Women's Hospital, School of Medicine, Zhejiang University from January 2005 to December 2015. The diagnosis of placental abruption was made in 1 212 cases. According to the consistency of prenatal and postnatal diagnosis, they were divided into 3 groups. (1) The diagnosis was consistent prenatally and postnatally in 715 cases(58...
May 25, 2017: Zhonghua Fu Chan Ke za Zhi
https://www.readbyqxmd.com/read/28536663/endometriosis-nodule-causing-spontaneous-haemoperitoneum-in-pregnancy-a-case-report-and-literature-review
#2
Junaid Rafi, Geetha Mahindrakar, Debjani Mukhopadhyay
Spontaneous haemoperitoneum in pregnancy (SHiP) due to endometriosis is a very rare condition and this is a case of a 41-year-old primigravida, who presented at 32 weeks with sudden onset of severe lower abdominal pain without any uterine activity. This was a dichorionic-diamniotic twin pregnancy, following in vitro fertilisation for subfertility secondary to severe endometriosis. On admission, pain score was eight, with ten being the maximum of the scale. The vital signs were stable. Abdominal palpation revealed generalised tenderness with no guarding or palpable contraction...
2017: Case Reports in Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28532844/effects-of-d-cloprostenol-on-different-layers-and-regions-of-the-bovine-uterus-during-the-follicular-and-luteal-phases
#3
M Piccinno, R L Sciorsci, V Masciopinto, M De Rosa, A Rizzo
INTRODUCTION: D-cloprostenol is a synthetic PGF2α, commonly used in bovine reproduction, that increases myometral contractility. However, little is known regarding its contractile behaviour and how it depends on the reproductive state and uterine topography (regions and muscular layers). HYPOTHESIS AND OBJECTIVES: These aspects would affect the action of d-cloprostenol on the uterus. Therefore, we hypothesize a possible use of this drug at the time of artificial insemination, to improve conception rates and, in the post-partum, in order to accelerate uterine involution in dairy cattle...
July 1, 2017: Theriogenology
https://www.readbyqxmd.com/read/28532683/the-essential-oil-from-the-twigs-of-cinnamomum-cassia-presl-inhibits-oxytocin-induced-uterine-contraction-in-vitro-and-in-vivo
#4
Lan Sun, Li-Na Liu, Jia-Chun Li, Yao-Zhong Lv, Shao-Bo Zong, Jun Zhou, Zheng-Zhong Wang, Jun-Ping Kou, Wei Xiao
ETHNOPHARMACOLOGICAL RELEVANCE: The twigs and bark of Cinnamomum cassia Presl (Lauraceae) are widely used in traditional Chinese medicine in the treatment of tumor, abdominal pain, dysmenorrhea, digestive system disease and inflammatory diseases. The aim of this study was to determine the inhibitory effect of the essential oil from the twigs of Cinnamomum cassia Presl (EOCC) on uterine contraction in vitro and in vivo. MATERIALS AND METHODS: The Institute of Cancer Research (ICR) mouse uterine contraction was induced by oxytocin (OT) exposure following estradiol benzoate pretreatment...
May 19, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28511577/sonographic-assessment-of-the-lower-uterine-segment-during-active-labor-in-women-with-or-without-a-uterine-scar-a-prospective-study
#5
Eran Barzilay, Amir Shay, Hila Lahav-Ezra, Avi Shina, Sharon Perlman, Reuven Achiron, Yinon Gilboa
OBJECTIVES: No study thus far has evaluated the LUS thickness in active labor. In this study we endeavored to assess the LUS during active labor. METHODS: Using transabdominal sonography in the mid-sagittal position with a full urinary bladder, the thickness of the LUS was measured during active labor phase in women with or without a history of a previous cesarean section. RESULTS: A total of 28 women with a previous cesarean delivery were compared to 29 women without a history of uterine surgery...
May 16, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28509860/a-combined-independent-source-separation-and-quality-index-optimization-method-for-fetal-ecg-extraction-from-abdominal-maternal-leads
#6
Lucia Billeci, Maurizio Varanini
The non-invasive fetal electrocardiogram (fECG) technique has recently received considerable interest in monitoring fetal health. The aim of our paper is to propose a novel fECG algorithm based on the combination of the criteria of independent source separation and of a quality index optimization (ICAQIO-based). The algorithm was compared with two methods applying the two different criteria independently-the ICA-based and the QIO-based methods-which were previously developed by our group. All three methods were tested on the recently implemented Fetal ECG Synthetic Database (FECGSYNDB)...
May 16, 2017: Sensors
https://www.readbyqxmd.com/read/28498625/biomechanics-of-the-human-uterus
#7
REVIEW
Kristin M Myers, David Elad
The appropriate biomechanical function of the uterus is required for the execution of human reproduction. These functions range from aiding the transport of the embryo to the implantation site, to remodeling its tissue walls to host the placenta, to protecting the fetus during gestation, to contracting forcefully for a safe parturition and postpartum, to remodeling back to its nonpregnant condition to renew the cycle of menstruation. To serve these remarkably diverse functions, the uterus is optimally geared with evolving and contractile muscle and tissue layers that are cued by chemical, hormonal, electrical, and mechanical signals...
May 12, 2017: Wiley Interdisciplinary Reviews. Systems Biology and Medicine
https://www.readbyqxmd.com/read/28494996/prediction-of-labor-onset-type-spontaneous-vs-induced-role-of-electrohysterography
#8
Jose Alberola-Rubio, Javier Garcia-Casado, Gema Prats-Boluda, Yiyao Ye-Lin, Domingo Desantes, Javier Valero, Alfredo Perales
BACKGROUND AND OBJECTIVE: Induction of labor (IOL) is a medical procedure used to initiate uterine contractions to achieve delivery. IOL entails medical risks and has a significant impact on both the mother's and newborn's well-being. The assistance provided by an automatic system to help distinguish patients that will achieve labor spontaneously from those that will need late-term IOL would help clinicians and mothers to take an informed decision about prolonging pregnancy. With this aim, we developed and evaluated predictive models using not only traditional obstetrical data but also electrophysiological parameters derived from the electrohysterogram (EHG)...
June 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28487952/expression-of-reproductive-hormone-receptors-and-contraction%C3%A2-associated-genes-in-porcine-uterus-during-the-estrous-cycle
#9
Sung-Min An, Sun Suk Kim, Jun Kim, Mee-Na Park, Jae-Eon Lee, Seong Keun Cho, Kyu-Sup Lee, Beum-Soo An
Contraction of uterus tissue frequently occurs throughout the estrous cycle and is regulated by several endogenous factors, including estradiol, progesterone, luteinizing hormone, follicle‑stimulating hormone, oxytocin (OXT) and contraction‑associated proteins (CAPs). Contraction activity of uterus tissue according to the estrous cycle is important, due to the fact that it is directly associated with balanced implantation and stable pregnancy. However, few studies have examined the mechanism of uterus contraction activity in a porcine model...
June 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28485811/the-effects-of-second-messenger-camp-and-its-relative-components-on-the-contraction-of-uterine-smooth-muscle-of-rat
#10
S-J Shu, X-G Lei, J-H Liang, Y-H Song, Q Xu, X-D Chen, L-G Mao, Z-G Li
OBJECTIVE: To investigate the effect of second messenger pathways on the uterine smooth muscle contraction and their associated mechanisms, and compare the evaluation methods. MATERIALS AND METHODS: Preparation of uterine smooth muscle strips from healthy pregnant 18-21 d SD and non-pregnant rats. When the contraction of muscle strips was stable, we conducted gradient administration: PDE4 inhibitors (Z90), prostaglandin PGE2, adenylate cyclase inhibitor (SQ 22,530), cAMP analogs (dbcAMP) and AMPK agonists (AICAR), solvent dimethyl sulfoxide (DMSO) as controlled...
April 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28484835/effectiveness-of-the-contemporary-treatment-of-preterm-labor-a-comparison-with-a-historical-cohort
#11
Philipp Wagner, Jiri Sonek, Harald Abele, Loefler Sarah, Markus Hoopmann, Sara Brucker, Qinging Wu, Karl Oliver Kagan
OBJECTIVE: To compare the effectiveness of contemporary treatment of preterm labor to a historical cohort. STUDY DESIGN: Retrospective matched case-control study to compare the outcomes of patients that were treated for preterm labor at the University Hospital of Tuebingen, Germany in 2014/2015 (current treatment cohort) and 2006/2007 (historical cohort). The study included women with singleton gestations who were admitted with the diagnosis of preterm labor between 24 + 0 and 34 + 0 weeks' gestation and a cervical length of ≤15 mm...
May 8, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/28479286/pdbu-induced-pkc-activation-triggers-sustained-contracture-in-human-myometrium-in-vitro
#12
Laurence Massenavette, Wilène Paul, Stéphanie Corriveau, Jean-Charles Pasquier, Éric Rousseau
BACKGROUND: Although physiological transition from rhythmic contractions to uterine retraction postpartum remains a poorly understood process, it has been shown that the latter is essential in the prevention of hemorrhage and its negative consequences. OBJECTIVE: This study aimed to investigate the transition from oscillatory contractions to tonic contracture in human myometrium after delivery; a mechanism purported to facilitate postpartum hemostasis. Protein Kinase C (PKC) plays a key regulatory role in human uterine contractions since it can prevent dephosphorylation of regulatory proteins and sensitize the contractile machinery to low Ca2+...
May 4, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28478816/effects-of-hypnosis-during-pregnancy-a-psychophysiological-study-on-maternal-stress
#13
Fabien Legrand, Corinne Grévin-Laroche, Elisabeth Josse, Guillaume Polidori, Hervé Quinart, Redha Taïar
Because it induces a state of reduced awareness and deep relaxation, hypnosis is thought to be efficient at relieving stress and anxiety. This study examined whether hypnosis may alter the pattern and time evolution of maternal and fetal stress. Here we report a 23-yrs-old primigravida woman at 31-weeks' gestation who underwent daily sessions of hypnosis during one week. An A (baseline)-B (intervention) - A' (return to baseline) design was used. Each study phase lasted one week. The State Anxiety Inventory (SAI) was completed daily...
May 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28473289/oxytocin-administration-during-spontaneous-labor-guidelines-for-clinical-practice-chapter-2-indications-of-oxytocin-according-the-first-and-second-stages-of-spontaneous-labor
#14
https://www.readbyqxmd.com/read/28465865/a-systematic-review-of-intrapartum-fetal-head-compression-what-is-the-impact-on-the-fetal-brain
#15
Kent D Heyborne
Objective During labor the fetal head is subjected to pressure related to uterine contractions and maternal pushing. Here we systematically review what is known about fetal head compression and its effects on fetal intracranial pressure, oxygenation, blood flow and cerebral function, and the plausibility that it might cause isolated fetal brain injury. Study Design Systematic review of intrapartum fetal head compression and fetal brain injury in accordance with the MOOSE methodology. The PubMed database was searched using a combination of the terms "fetal," "head," "cranial," "extracranial," "pressure," and "compression...
April 2017: American Journal of Perinatology Reports
https://www.readbyqxmd.com/read/28461768/cervical-elastography-during-pregnancy-clinical-perspectives
#16
REVIEW
Malgorzata Swiatkowska-Freund, Krzysztof Preis
Uterine cervix is a part of the uterus responsible for maintaining pregnancy till term. As long as the cervix remains long and firm and its internal orifice (os) is closed, it can withstand enlargement of the uterine contents and resultant growing pressure. Mechanical properties of the cervix change during pregnancy; the cervix ripens prior to delivery, then effaces and dilates with contractions of the uterus. Ripening of the cervix can be assessed using the Bishop score and ultrasonographically determined length of the cervical canal and internal os...
2017: International Journal of Women's Health
https://www.readbyqxmd.com/read/28456372/uterine-peristalsis-and-fertility-current-knowledge-and-future-perspectives-a-review-and-meta-analysis
#17
REVIEW
Nienke Petronella Maria Kuijsters, Willem Gerardus Methorst, Madeleine Susanne Quirine Kortenhorst, Chiara Rabotti, Massimo Mischi, Benedictus Christiaan Schoot
Although uterine contractions in the non-pregnant uterus have been studied extensively, the knowledge gained has not been used in general fertility treatment work-up. In this review paper, we provide an overview of the current knowledge on uterine peristalsis (UP), based on the available literature. This literature shows that UP influences pregnancy chances in both natural and artificial cycles. Although the physiological background of these contractions is not completely clear, we know that several factors can be of influence, like uterine pathologies and hormones...
April 12, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28446135/comparison-of-rapid-immunoassays-for-rupture-of-fetal-membranes
#18
Irogue Igbinosa, Ferney A Moore, Cheri Johnson, Jon E Block
BACKGROUND: Rupture of membranes (ROM) before the onset of uterine contractions, particularly in pregnancies less than 37 weeks gestational age, is a common diagnostic problem in obstetrical practice. Timely detection of ROM is vital to support gestational age-specific interventions to optimize perinatal outcomes and minimize the risk of serious complications such as preterm delivery, fetal distress and maternal/fetal infections. Rapid bedside immunoassay tests designed to detect amniotic fluid proteins in cervicovaginal fluids have emerged as valuable clinical tools to provide timely ROM diagnosis...
April 26, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/28433870/automated-detection-of-premature-delivery-using-empirical-mode-and-wavelet-packet-decomposition-techniques-with-uterine-electromyogram-signals
#19
U Rajendra Acharya, Vidya K Sudarshan, Soon Qing Rong, Zechariah Tan, Choo Min Lim, Joel Ew Koh, Sujatha Nayak, Sulatha V Bhandary
An accurate detection of preterm labor and the risk of preterm delivery before 37 weeks of gestational age is crucial to increase the chance of survival rate for both mother and the infant. Thus, the uterine contractions measured using uterine electromyogram (EMG) or electro hysterogram (EHG) need to have high sensitivity in the detection of true preterm labor signs. However, visual observation and manual interpretation of EHG signals at the time of emergency situation may lead to errors. Therefore, the employment of computer-based approaches can assist in fast and accurate detection during the emergency situation...
April 18, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28426160/assessment-and-support-during-early-labour-for-improving-birth-outcomes
#20
REVIEW
Shinobu Kobayashi, Nobutsugu Hanada, Masayo Matsuzaki, Kenji Takehara, Erika Ota, Hatoko Sasaki, Chie Nagata, Rintaro Mori
BACKGROUND: The progress of labour in the early or latent phase is usually slow and may include painful uterine contractions. Women may feel distressed and lose their confidence during this phase. Support and assessment interventions have been assessed in two previous Cochrane Reviews. This review updates and replaces these two reviews, which have become out of date. OBJECTIVES: To investigate the effectiveness of assessment and support interventions for women during early labour...
April 20, 2017: Cochrane Database of Systematic Reviews
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