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https://www.readbyqxmd.com/read/29209926/a-randomized-trial-of-phenylephrine-infusion-versus-bolus-dosing-for-nausea-and-vomiting-during-cesarean-delivery-in-obese-women
#1
Ronald B George, Dolores M McKeen, Jennifer E Dominguez, Terrence K Allen, Patricia A Doyle, Ashraf S Habib
PURPOSE: Hypotension is common after spinal anesthesia for Cesarean delivery. It is associated with nausea, vomiting, and fetal acidosis. Previous research on phenylephrine excluded obese subjects. We compared the incidence of intraoperative nausea and vomiting (IONV) in obese patients who received a prophylactic phenylephrine infusion vs those who received bolus dosing for the treatment of spinal-induced hypotension. METHODS: In this multicentre, double-blinded randomized controlled trial, 160 obese women undergoing elective Cesarean delivery under spinal anesthesia were randomized to receive a prophylactic phenylephrine infusion initiated at 50 μg·min-1 (and titrated according to a predefined algorithm) or 100 μg phenylephrine boluses to treat hypotension...
December 5, 2017: Canadian Journal of Anaesthesia, Journal Canadien D'anesthésie
https://www.readbyqxmd.com/read/29151071/an-observational-cohort-study-of-3-units-versus-5-units-slow-intravenous-bolus-oxytocin-in-women-undergoing-elective-caesarean-delivery
#2
N Terblanche, P Otahal, A Messmer, P Wright, S Patel, K Nathan, J E Sharman
This study sought to compare postpartum blood loss and maternal outcomes after 3IU and 5IU oxytocin at elective caesarean delivery. In a prospective observational study, 73 women undergoing elective caesarean delivery under spinal anaesthetic received a slow I.V. injection of either 3IU (n = 35) or 5IU (n = 38) oxytocin after delivery. The main outcome was gravimetrically measured 24-hour postpartum blood loss with a non-inferiority margin of 300 mL. Uterine tone, phenylephrine dose, emesis and hypotension after oxytocin administration were secondary outcomes...
August 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/29112650/maternal-pulse-pressure-and-the-risk-of-postepidural-complications-a-randomized-controlled-trial
#3
RANDOMIZED CONTROLLED TRIAL
Justin R Lappen, Stephen A Myers, Norman Bolen, Brian M Mercer, Edward K S Chien
OBJECTIVE: To test the hypothesis that increasing the intravenous fluid bolus volume at the time of epidural placement in women with narrow pulse pressure would reduce postepidural fetal heart rate (FHR) abnormalities, hypotension, and resuscitative obstetric interventions. METHODS: We performed a single-center randomized controlled trial. Eligible participants were normotensive with a nonanomalous singleton gestation at or after 35 weeks and with a narrow pulse pressure (less than 45 mm Hg) on admission...
December 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29092961/maternal-olmesartan-exposure-causing-neonatal-failure
#4
Antonio Pérez-Iranzo, Ana Nos Ferreres, Aranzazu Jarque Bou
Although angiotensin II receptor blockers (ARBs) are contraindicated during pregnancy, new cases are currently being reported.A 32-week preterm neonate was admitted after C-section due to maternal oligohydramnios. He presented with Potter phenotype, pulmonary hypoplasia with pneumothorax, systemic hypotension and anuria. He required chest drain insertion and continuous positive airway pressure (CPAP), volume expansion plus inotropic support with persistent renal failure. Mother confirmed olmesartan intake during entire pregnancy...
November 1, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29073508/lower-limbs-venous-compression-reduces-the-incidence-of-maternal-hypotension-following-epidural-analgesia-during-term-labor
#5
Violaine Peyronnet, Arnaud Roses, Aude Girault, Marie Pierre Bonnet, Francois Goffinet, Vassilis Tsatsaris, Edouard Lecarpentier
OBJECTIVE(S): Every year in France, 10% to 20% of the 600 000 women given epidural analgesia during labor experience hypotension, which in 15% of cases is associated with fetal heart rate abnormalities. The efficiency of lower limbs venous compression in preventing the occurrence of maternal hypotension after neuraxial anesthesia has already been demonstrated, but only in the context of scheduled cesarean section. We assessed the preventive effect of medical lower limbs venous compression on the incidence of maternal hypotension after epidural analgesia during spontaneous term labor...
October 16, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/29044422/the-response-of-the-innate-immune-and-cardiovascular-systems-to-lps-in-pregnant-and-nonpregnant-mice
#6
Julia Zöllner, Laura G Howe, Lydia F Edey, Kieran P O'Dea, Masao Takata, Fabiana Gordon, James Leiper, Mark R Johnson
Sepsis is the leading cause of direct maternal mortality, but there are no data directly comparing the response to sepsis in pregnant and nonpregnant (NP) individuals. This study uses a mouse model of sepsis to test the hypothesis that the cardiovascular response to sepsis is more marked during pregnancy. Female CD1 mice had radiotelemetry probes implanted and were time mated. NP and day 16 pregnant CD-1 mice received intraperitoneal lipopolysaccharide (LPS; 10 μg, serotype 0111: B4). In a separate study, tissue and serum (for RNA, protein and flow cytometry studies), aorta and uterine vessels (for wire myography) were collected after LPS or vehicle control administration...
August 1, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29034983/pleth-variability-index-can-predict-spinal-anaesthesia-induced-hypotension-in-patients-undergoing-caesarean-delivery
#7
S Kuwata, K Suehiro, T Juri, S Tsujimoto, A Mukai, K Tanaka, T Yamada, T Mori, K Nishikawa
BACKGROUND: Spinal anaesthesia carries a risk of hypotension. We hypothesized that pleth variability index and perfusion index would assess maternal volume status, and thus, allow identification of patients at higher risk of developing hypotension after spinal anaesthesia for caesarean delivery. METHODS: Fifty patients undergoing elective caesarean delivery were enrolled. All patients received spinal anaesthesia with 0.5% hyperbaric bupivacaine (10 mg) and fentanyl (10 mcg)...
October 16, 2017: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/29034064/personalized-therapy-against-preeclampsia-by-replenishing-placental-protein-13-pp13-targeted-to-patients-with-impaired-pp13-molecule-or-function
#8
REVIEW
Hamutal Meiri, George Osol, Irene Cetin, Sveinbjörn Gizurarson, Berthold Huppertz
Hypertensive disorders affect about one third of all people aged 20 and above, and are treated with anti-hypertensive drugs. Preeclampsia (PE) is one form of such disorders that only develops during pregnancy. It affects ten million pregnant women globally and additionally causes fetal loss and major newborn disabilities. The syndrome's origin is multifactorial, and anti-hypertensive drugs are ineffective in treating it. Biomarkers are helpful for predict its development. Generic drugs, such as low dose aspirin, were proven effective in preventing preterm PE...
2017: Computational and Structural Biotechnology Journal
https://www.readbyqxmd.com/read/29033720/reducing-by-50-the-incidence-of-maternal-hypotension-during-elective-caesarean-delivery-under-spinal-anesthesia-effect-of-prophylactic-ondansetron-and-or-continuous-infusion-of-phenylephrine-a-double-blind-randomized-placebo-controlled-trial
#9
Jose Ramon Ortiz-Gómez, Francisco Javier Palacio-Abizanda, Francisco Morillas-Ramirez, Inocencia Fornet-Ruiz, Ana Lorenzo-Jiménez, Maria Lourdes Bermejo-Albares
BACKGROUND: Prophylactic administrations of ondansetron or phenylephrine have been reported to provide a protective effect against hypotension in women undergoing cesarean delivery under spinal anesthesia (SA). The main hypothesis is that ondansetron improves the hemodynamic response, especially combined with phenylephrine infusion. METHODS: This prospective, double-blind, randomized, placebo-controlled study included 265 healthy pregnant women scheduled for elective cesarean delivery under SA...
October 2017: Saudi Journal of Anaesthesia
https://www.readbyqxmd.com/read/28986931/can-point-of-care-ultrasound-predict-spinal-hypotension-during-caesarean-section-a-prospective-observational-study
#10
L Zieleskiewicz, A Noel, G Duclos, M Haddam, A Delmas, C Bechis, A Loundou, J Blanc, A Mignon, L Bouvet, S Einav, A Bourgoin, M Leone
Spinal anaesthesia for elective caesarean section is associated with maternal hypotension, secondary to alteration of sympathetic tone and hypovolemia, in up to 70% of cases. Measurement of the subaortic variation in the velocity time integral (VTI) after passive leg raising allows prediction of fluid responsiveness. Our objective, in this prospective single-centre observational study, was to assess the ability of change in VTI after 45° passive leg raising to predict hypotension after spinal anaesthesia. Ultrasound measurements were performed just before elective caesarean section...
October 7, 2017: Anaesthesia
https://www.readbyqxmd.com/read/28980306/effect-of-maternal-oxygen-inhalation-on-foetal-free-radical-activity-a-prospective-randomized-trial
#11
V Ahuja, S Gombar, S Jaswal, J Kaur, P Gupta, D Chawla, A Huria, S Singh
BACKGROUND: Maternal inhalation of 35-40% oxygen concentration has no significant effect on foetal partial pressure of oxygen, and 60-100% produced maternal and foetal hyperoxia with increased free radical activity. The benefit of 50% maternal oxygen inhalation on foetal oxygenation, oxidant stress and total antioxidant status (TAS) during Caesarean section (CS) has not been simultaneously evaluated. METHODS: In this prospective, randomized, controlled trial 120 ASA physical status I-II, term pregnant women were recruited to elective CS (n = 60) and emergency CS (n = 60) and received either 50% oxygen or air inhalation following subarachnoid block (SAB)...
October 5, 2017: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/28976555/techniques-for-preventing-hypotension-during-spinal-anaesthesia-for-caesarean-section
#12
REVIEW
Cheryl Chooi, Julia J Cox, Richard S Lumb, Philippa Middleton, Mark Chemali, Richard S Emmett, Scott W Simmons, Allan M Cyna
BACKGROUND: Maternal hypotension is the most frequent complication of spinal anaesthesia for caesarean section. It can be associated with nausea or vomiting and may pose serious risks to the mother (unconsciousness, pulmonary aspiration) and baby (hypoxia, acidosis, neurological injury). OBJECTIVES: To assess the effects of prophylactic interventions for hypotension following spinal anaesthesia for caesarean section. SEARCH METHODS: We searched Cochrane Pregnancy and Childbirth's Trials Register (9 August 2016) and reference lists of retrieved studies...
August 4, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28942689/fetal-inflammatory-response-syndrome-firs-and-outcome-of-preterm-neonates-a-prospective-analytical-study
#13
Febi Francis, Vishnu Bhat, Nivedita Mondal, Bethou Adhisivam, Sajini Jacob, Gowri Dorairajan, B N Harish
OBJECTIVES: To estimate the incidence of fetal inflammatory response syndrome (FIRS) in preterm neonates and correlate it with immediate and one-year neurodevelopmental outcome. MATERIALS AND METHODS: This prospective observational analytical study, in preterm neonates with gestational age between 26 and 34 weeks was conducted from May 2014 to December 2015 in a tertiary care hospital in South India. FIRS was defined as the presence of either elevated levels of interleukin-6 (IL-6) in cord blood ≥11 pg/ml and/or the placental histopathology showing evidence of fetal inflammatory response...
October 11, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28891082/thrombolysis-for-massive-pulmonary-embolism-in-pregnancy
#14
Mojdeh S Heavner, Min Zhang, Chelsea E Bast, Lindsey Parker, Rachel F Eyler
Pregnant women are at high risk for venous thromboembolism, including pulmonary embolism (PE), given expected changes in coagulation, fibrinolysis, and venous blood flow. In fact, PE is the leading cause of maternal death in the United States. Nonpregnant patients who develop PE with hypotension or show signs of deterioration after anticoagulation receive thrombolytics as a standard of care. Pregnant women, however, have been excluded from clinical trials with thrombolytics, and all data available in this population are published as case reports or case series...
September 11, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/28872480/a-random-allocation-graded-dose-response-study-of-norepinephrine-and-phenylephrine-for-treating-hypotension-during-spinal-anesthesia-for-cesarean-delivery
#15
Warwick D Ngan Kee
BACKGROUND: Norepinephrine has been investigated as a potential alterative to phenylephrine for maintaining blood pressure during spinal anesthesia for cesarean delivery with the advantage of less depression of maternal heart rate and cardiac output. However, the relative potencies of these two vasopressors have not been fully determined in this context. METHODS: In a random-allocation, graded dose-response study, 180 healthy patients undergoing spinal anesthesia for elective cesarean delivery received a single bolus of norepinephrine in one of six different doses ranging from 4 to 12 µg or phenylephrine in one of six different doses ranging from 60 to 200 µg to treat the first episode of hypotension...
December 2017: Anesthesiology
https://www.readbyqxmd.com/read/28860857/preventing-nausea-and-vomiting-in-women-undergoing-regional-anesthesia-for-cesarean-section-challenges-and-solutions
#16
REVIEW
Yvonne Jelting, Christian Klein, Thomas Harlander, Leopold Eberhart, Norbert Roewer, Peter Kranke
BACKGROUND: Intraoperative nausea and vomiting (IONV) or postoperative nausea and vomiting (PONV) affecting women undergoing regional anesthesia for cesarean section is an important clinical problem since these techniques are used widely. There are burdens of literature about IONV/PONV and several in parturient and cesarean. However, it needs more attention. The underlying mechanisms of IONV and PONV in the obstetrical setting mainly include hypotension due to sympathicolysis during neuraxial anesthesia, bradycardia owing to an increased vagal tone, the visceral stimulation via the surgical procedure and intravenously administered opioids...
2017: Local and Regional Anesthesia
https://www.readbyqxmd.com/read/28817493/dna-methylation-of-the-glucocorticoid-receptor-gene-promoter-in-the-placenta-is-associated-with-blood-pressure-regulation-in-human-pregnancy
#17
Sulistyo E Dwi Putra, Christoph Reichetzeder, Martin Meixner, Karsten Liere, Torsten Slowinski, Berthold Hocher
BACKGROUND: Blood pressure (BP) regulation during pregnancy is influenced by hormones of placental origin. It was shown that the glucocorticoid system is altered in hypertensive pregnancy disorders such as preeclampsia. Epigenetic mechanism might influence the activity of genes involved in placental hormone/hormone receptor synthesis/action during pregnancy. METHOD: In the current study, we analyzed the association of 5'-C-phosphate-G-3' (CpG) site methylation of different glucocorticoid receptor gene (NR3C1) promoter regions with BP during pregnancy...
November 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28795968/differential-roles-of-the-right-and-left-toe-perfusion-index-in-predicting-the-incidence-of-postspinal-hypotension-during-cesarean-delivery
#18
COMPARATIVE STUDY
Zifeng Xu, Tao Xu, Puwen Zhao, Rui Ma, Mazhong Zhang, Jijian Zheng
BACKGROUND: Aortocaval compression by the gravid uterus, low baseline vasomotor tone, and spinal anesthesia-related sympathetic blockade contribute to spinal anesthesia-induced hypotension during cesarean delivery. The finger perfusion index (PI) can predict spinal hypotension by reflecting baseline vasomotor tone, but cannot directly reflect aortocaval compression by the gravid uterus. This study aimed to examine whether baseline toe PIs predict the incidence of maternal hypotension and reflect aortocaval compression by the gravid uterus during cesarean delivery under spinal anesthesia...
November 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28750269/a-comparative-analysis-of-ante-and-postnatal-clinical-characteristics-of-extremely-premature-neonates-suffering-from-refractory-and-non-refractory-hypotension-is-early-clinical-differentiation-possible
#19
Rita P Verma, Shaeequa Dasnadi, Yuan Zhao, Hegang H Chen
BACKGROUND: About 25% of hypotensive ELBW infants are refractory to intravascular volume expansion and inotropic drugs (VI) and require hydrocortisone (HC). Such neonates suffer from complications of prolonged hypotension and extended therapy with VI. ELBW infants with refractory hypotension (RH) are clinically and biochemically indistinguishable from those who respond to VI. OBJECTIVE: Early identification and differentiation of ELBW infants susceptible to steroid dependent hypotension from those who respond to inotropic medications...
October 2017: Early Human Development
https://www.readbyqxmd.com/read/28728156/predicting-the-risk-to-develop-preeclampsia-in-the-first-trimester-combining-promoter-variant-98a-c-of-lgals13-placental-protein-13-black-ethnicity-previous-preeclampsia-obesity-and-maternal-age
#20
Liora Madar-Shapiro, Ido Karady, Alla Trahtenherts, Argryo Syngelaki, Ranjit Akolekar, Liona Poon, Ruth Cohen, Adi Sharabi-Nov, Berthold Huppertz, Marei Sammar, Kata Juhasz, Nandor Gabor Than, Zoltan Papp, Roberto Romero, Kypros H Nicolaides, Hamutal Meiri
BACKGROUND: LGALS13 (placental protein 13 [PP13]) promoter DNA polymorphisms was evaluated in predicting preeclampsia (PE), given PP13's effects on hypotension, angiogenesis, and immune tolerance. METHODS: First-trimester plasma samples (49 term and 18 intermediate) of PE cases matched with 196 controls were collected from King's College Hospital, London, repository. Cell-free DNA was extracted and the LGALS13 exons were sequenced after PCR amplification. Expression of LGALS13 promoter reporter constructs was determined in BeWo trophoblast-like cells with luciferase assays...
July 21, 2017: Fetal Diagnosis and Therapy
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