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https://www.readbyqxmd.com/read/28228338/extra-and-intracellular-calcium-signaling-pathway-s-differentially-regulate-histamine-induced-myometrial-contractions-during-early-and-mid-pregnancy-stages-in-buffaloes-bubalus-bubalis
#1
Abhishek Sharma, Udayraj P Nakade, Soumen Choudhury, Rajkumar Singh Yadav, Satish Kumar Garg
This study examines the differential role of calcium signaling pathway(s) in histamine-induced uterotonic action during early and mid-pregnancy stages in buffaloes. Compared to mid pregnancy, tonic contraction, amplitude and mean-integral tension were significantly increased by histamine to produce myometrial contraction during early pregnancy with small effects on phasic contraction and frequency. Although uterotonic action of histamine during both stages of pregnancy is sensitive to nifedipine (a L-type Ca(2+) channels blocker) and NNC55-0396 (T-type Ca(2+) channels blocker), the role of extracellular calcium seems to be more significant during mid-pregnancy as in this stage histamine produced only 9...
February 7, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28212181/effect-of-a-high-rate-versus-a-low-rate-oxytocin-infusion-for-maintaining-uterine-contractility-during-elective-cesarean-delivery-a-prospective-randomized-clinical-trial
#2
Adrienne Duffield, Christine McKenzie, Brendan Carvalho, Bharathi Ramachandran, Victoria Yin, Yasser Y El-Sayed, Edward T Riley, Alexander J Butwick
BACKGROUND: Oxytocin is routinely used as prophylaxis against uterine atony. During elective cesarean delivery (CD), an oxytocin bolus is used to initiate adequate uterine tone, followed by an oxytocin infusion to maintain uterine contractility. However, it is unclear whether oxytocin maintenance infusion rate influences total estimated blood loss (EBL). METHODS: We performed a prospective, randomized, double-blind trial in 51 women undergoing elective CD. Women were randomly assigned to receive an oxytocin maintenance infusion of 2...
March 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28209484/successful-provision-of-inter-hospital-extracorporeal-cardiopulmonary-resuscitation-for-acute-post-partum-pulmonary-embolism
#3
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/28208943/role-of-prophylactic-tranexamic-acid-in-reducing-blood-loss-during-elective-caesarean-section-a-randomized-controlled-study
#4
Sj Dhivya Lakshmi, Reena Abraham
INTRODUCTION: Obstetric haemorrhage accounts for 20-25% of maternal mortality and morbidity. Anti-fibrinolytics are being widely used in field of surgery. It is also used to reduce heavy menstrual blood loss. AIM: To analyse the effectiveness of Tranexamic Acid (TXA) in reducing blood loss during elective caesarean section. MATERIALS AND METHODS: This interventional, randomized, parallel group study was done in the Department of Obstetrics and Gynaecolgy, PSG IMSR, Coimbatore, from June 2014 to May 2015...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28207596/a-role-for-adrenergic-receptors-in-the-uterotonic-effects-of-ergometrine-in-isolated-human-term-nonlaboring-myometrium
#5
Rebecca A Fanning, Florike Sheehan, Claire Leyden, Niamh Duffy, Luis F Iglesias-Martinez, Michael F Carey, Deirdre P Campion, John J O'Connor
BACKGROUND: Ergometrine is a uterotonic agent that is recommended in the prevention and management of postpartum hemorrhage. Despite its long-standing use, the mechanism by which it acts in humans has never been elucidated fully. The objective of this study was to investigate the role of adrenoreceptors in ergometrine's mechanism of action in human myometrium. The study examined the hypothesis that α-adrenoreceptor antagonism would result in the reversal of the uterotonic effects of ergometrine...
February 15, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28196269/shock-index-and-vital-sign-reference-ranges-during-the-immediate-postpartum-period
#6
Dyese Taylor, Adiel Fleischer, Natalie Meirowitz, Lisa Rosen
OBJECTIVE: To determine reference ranges for patient vital signs during the immediate postpartum period. METHODS: A retrospective chart review collected data on the variables of interest for all women with 0-24-hour postpartum data available at two hospitals in New York, NY, USA, between July 1, 2012, and January 31, 2015. Patients were excluded if they had received antihypertensives, uterotonics, or blood products. Regression lines, with 95% prediction intervals, were constructed for shock index, systolic blood pressure, heart rate, pulse pressure, and rate over pressure evaluation (ROPE) values...
February 14, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28176919/management-of-obstetric-postpartum-hemorrhage-a-national-service-evaluation-of-current-practice-in-the-uk
#7
Bassel H Al Wattar, Jennifer A Tamblyn, William Parry-Smith, Mathew Prior, Helen Van Der Nelson
BACKGROUND: Postpartum hemorrhage (PPH) continues to be one of the major causes of maternal mortality and morbidity in obstetrics. Variations in practice often lead to adverse maternity outcomes following PPH. Our objective was to assess the current practice in managing PPH in the UK. METHODS: We performed a national multicenter prospective service evaluation study over one calendar month and compared the current performance to national standards for managing PPH...
2017: Risk Management and Healthcare Policy
https://www.readbyqxmd.com/read/28140723/placenta-previa-and-maternal-hemorrhagic-morbidity
#8
Karen J Gibbins, Brett D Einerson, Michael W Varner, Robert M Silver
OBJECTIVE: Placenta previa is associated with maternal hemorrhage, but most literature focuses on morbidity in the setting of placenta accreta. We aim to characterize maternal morbidity associated with previa and to define risk factors for hemorrhage. METHODS: This is a secondary cohort analysis of the NICHD Maternal-Fetal Medicine Units Network Cesarean Section Registry. This analysis included all women undergoing primary Cesarean delivery without placenta accreta...
January 31, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28110281/incidence-risk-factors-and-risk-prediction-of-hospital-acquired-suspected-adverse-drug-reactions-a-prospective-cohort-of-ugandan-inpatients
#9
Ronald Kiguba, Charles Karamagi, Sheila M Bird
OBJECTIVES: To determine the incidence and risk factors of hospital-acquired suspected adverse drug reactions (ADRs) among Ugandan inpatients. We also constructed risk scores to predict and qualitatively assess for peculiarities between low-risk and high-risk ADR patients. METHODS: Prospective cohort of consented adults admitted on medical and gynaecological wards of the 1790-bed Mulago National Referral Hospital. Hospital-acquired suspected ADRs were dichotomised as possible (possible/probable/definite) or not and probable (probable/definite) or not, using the Naranjo scale...
January 20, 2017: BMJ Open
https://www.readbyqxmd.com/read/28071357/effects-of-the-kir7-1-blocker-vu590-on-spontaneous-and-agonist-induced-contractions-of-human-pregnant-myometrium
#10
Denis J Crankshaw, David A Crosby, John J Morrison
KIR7.1, an inwardly rectifying K(+) channel, plays a critical role in regulating uterine excitability during pregnancy and has been suggested as a potential new target for the treatment of conditions arising from dysfunctional uterine contractility, for example, atonic postpartum hemorrhage. The aim of this study was to investigate the effects of the selective KIR7.1 blocker, VU590, on both spontaneous and agonist-stimulated contractions of human pregnant myometrium in vitro. At a concentration of 20 µmol/L, VU590 significantly increased the mean contractile force and the frequency of spontaneous contractions ( P < 0...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/27986181/atonic-postpartum-hemorrhage-blood-loss-risk-factors-and-third-stage-management
#11
Sarka Lisonkova, Azar Mehrabadi, Victoria M Allen, Emmanuel Bujold, Joan M G Crane, Laura Gaudet, Robert J Gratton, Noor Niyar N Ladhani, Olufemi A Olatunbosun, K S Joseph
OBJECTIVE: Atonic postpartum hemorrhage rates have increased in many industrialized countries in recent years. We examined the blood loss, risk factors, and management of the third stage of labour associated with atonic postpartum hemorrhage. METHODS: We carried out a case-control study of patients in eight tertiary care hospitals in Canada between January 2011 and December 2013. Cases were defined as women with a diagnosis of atonic postpartum hemorrhage, and controls (without postpartum hemorrhage) were matched with cases by hospital and date of delivery...
December 2016: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/27897027/-acute-uterine-inversion-after-delivery
#12
E Pechová, I Bydžovská, M Krausová, M Lubušký
OBJECTIVE: A case of acute inversion of the uterus after childbirth, in which we successfully perform a manual vaginal reposition of the uterus. DESIGN: Case report. SETTING: Department of Obstetrics and Gynaecology, Krajská nemocnice Liberec, a.s.; Department of Obstetrics and Gynaecology, Palacky University Hospital, Olomouc. OBSERVATION: Our case report describes acute post-partum uterine inversion of the second degree, which developed after delivery in a 36-year-old primigravida...
2016: Ceská Gynekologie
https://www.readbyqxmd.com/read/27890467/use-of-hyperbaric-oxygen-therapy-and-pegylated-carboxyhemoglobin-bovine-in-a-jehovah-s-witness-with-life-threatening-anemia-following-postpartum-hemorrhage
#13
K Thenuwara, J Thomas, M Ibsen, U Ituk, K Choi, E Nickel, M J Goodheart
We present a case of a Jehovah's Witness patient who refused blood products, with the exception of albumin and clotting factors, and underwent cesarean section under spinal anesthesia complicated by postpartum hemorrhage. She was fluid resuscitated and treated with multiple uterotonics and internal iliac artery embolization. Because of agitation she required emergency tracheal intubation. Her hemoglobin concentration dropped from a preoperative value of 12mg/dL to 3mg/dL on postoperative day one. She was acidotic, requiring vasopressors for hemodynamic stability and remained ventilated and sedated...
February 2017: International Journal of Obstetric Anesthesia
https://www.readbyqxmd.com/read/27871550/carbetocin-for-prevention-of-postcesarean-hemorrhage-in-women-with-severe-preeclampsia-a-before-after-cohort-comparison-with-oxytocin
#14
B Nucci, Agm Aya, E Aubry, J Ripart
STUDY OBJECTIVE: The aim of the study was to compare the incidence of the use of additional uterotonics before and after the change of carbetocin to oxytocin for the prevention of postpartum hemorrhage after cesarean delivery in women with severe preeclampsia. DESIGN: This was an observational retrospective before-and-after study. SETTING: Operating room, postoperative recovery area. PATIENTS: Sixty women with severe preeclampsia undergoing cesarean delivery under spinal anesthesia; American Society of Anesthesiologists 3...
December 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27855529/uterine-packing-versus-foley-s-catheter-for-the-treatment-of-postpartum-hemorrhage-secondary-to-bleeding-tendency-in-low-resource-setting-a-four-year-observational-study
#15
Mohamed Rezk, Said Saleh, Abdelhamid Shaheen, Tamer Fakhry
OBJECTIVE: To assess the effectiveness and safety of uterine packing versus Foley's catheter tamponade for controlling postpartum hemorrhage (PPH) secondary to bleeding tendency after vaginal delivery. METHODS: This was a prospective observational study conducted on 92 patients with primary PPH due to bleeding tendency following vaginal delivery who were unresponsive to uterotonics and bimanual compression of the uterus. Patients were divided into two groups, Uterine packing group (n = 45) and Foley catheter group (n = 47)...
December 14, 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27825028/peripartum-hysterectomy-incidence-risk-factors-and-clinical-characteristics-in-ireland
#16
Sarah M Campbell, Paul Corcoran, Edel Manning, Richard A Greene
BACKGROUND: The incidence of peripartum hysterectomy (PH) shows fifty-fold variation worldwide (0.2-10.5/1000 deliveries) and risk factors include advancing maternal age and parity, previous caesarean section (CS) and abnormal placentation. OBJECTIVES: In this first national study of PH in Ireland, our objectives were threefold: to describe the national trend in PH incidence over 15 years since 1999; to assess risk of PH associated with morbidly adherent placenta (MAP), placenta praevia and postpartum haemorrhage (PPH) during 2005-2013; and to describe the causes, interventions and outcomes of PH cases during 2011-2013...
December 2016: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/27816150/critical-care-for-the-obstetrician-and-gynecologist-obstetric-hemorrhage-and-disseminated-intravascular-coagulopathy
#17
REVIEW
Arthur Jason Vaught
Obstetric hemorrhage accounts for 5% all deliveries in the United States and accounts for high maternal morbidity and mortality. Many hemorrhages are secondary to uterine atony and are quickly ameliorated with appropriate uterotonic use. However, for a subset of cases, severe hemorrhage may require advanced resuscitative techniques, and innovative procedural and surgical techniques. This article guides a provider through such a resuscitation.
December 2016: Obstetrics and Gynecology Clinics of North America
https://www.readbyqxmd.com/read/27806530/a-retrospective-study-of-maternal-and-neonatal-outcomes-following-conventional-and-water-birth-in-ecuador
#18
Sharon Rosales, Esteban Ortiz-Prado, Diego Alarcón, Dayana Rosales, Ana Lucia Iturralde
OBJECTIVES: Demonstrate maternal and neonatal complications reported in women giving birth in water birth compared to those conventional land births. METHODS: An observational retrospective analysis of the incidence of maternal and neonatal outcomes among 358 women who deliver their newborns throughout conventional vaginal delivery and 308 women giving birth in water during 2013 in Quito, Ecuador. Maternal Age, Educational attainment, Neonatal weight, height, APGAR scores, vaginal tearing and the need to resuscitate a newborn were the variables matched for both groups...
August 4, 2016: Global Journal of Health Science
https://www.readbyqxmd.com/read/27716260/perinatal-mortality-associated-with-use-of-uterotonics-outside-of-comprehensive-emergency-obstetric-and-neonatal-care-a-cross-sectional-study
#19
Louise T Day, Daniel Hruschka, Felicity Mussell, Eva Jeffers, Stacy L Saha, Shafiul Alam
BACKGROUND: Prior studies have shown that using uterotonics to augment or induce labor before arrival at comprehensive Emergency Obstetric and Neonatal Care (CEmONC) settings (henceforth, "outside uterotonics") may contribute to perinatal mortality in low- and middle-income countries. We estimate its effect on perinatal mortality in rural Bangladesh. METHODS: Using hospital records (23986 singleton term births, Jan 1, 2009-Dec 31, 2015) from rural Bangladesh, we use a logistic regression model to estimate the increased risk of perinatal death from uterotonics administered outside a CEmONC facility...
October 6, 2016: Reproductive Health
https://www.readbyqxmd.com/read/27698600/comparison-between-sublingual-and-vaginal-route-of-misoprostol-in-management-of-first-trimester-miscarriage-missing
#20
Zahra Dehbashi, Mahmood Moosazadeh, Mahdi Afshari
BACKGROUND: Each year, more than forty million abortions are occurred whole of the world. Misoprostol is a prostaglandin analogue with a strong uterotonic effect. The present study aimed to compare the efficacy of Misoprostol in first trimester abortion through two sublingual and vaginal routes of administration. METHODS: This randomized clinical trial was conducted on 52 consecutive women in first trimester candidate for pregnancy termination because of fetal IUFD or missed abortion in sonography reports...
July 24, 2016: Materia Socio-medica
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