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https://www.readbyqxmd.com/read/28499681/is-nifedipine-as-a-tocolytic-effective-in-facilitating-in-utero-transfer
#1
Jodie Martin, Jodie Mills, David Stanley
OBJECTIVE: Previous studies have reported that air medical transfer of women in preterm labor can be safely accomplished, without preterm birth occurring; in fact, many women were later discharged without preterm birth occurring. The purpose of this study was to determine if nifedipine, when used as a tocolytic, is effective at facilitating in utero transfer of women in preterm labor in the Top End of the Northern Territory of Australia. METHODS: This was a retrospective descriptive study over a 3-year period of all women transported in preterm labor between 23 + 6 to 36 + 6 weeks' gestation of pregnancy (N = 325)...
May 2017: Air Medical Journal
https://www.readbyqxmd.com/read/28426127/postpartum-hypertension-etiology-diagnosis-and-management
#2
Kathryn J Sharma, Sarah J Kilpatrick
Importance: Postpartum hypertension complicates approximately 2% of pregnancies and, similar to antepartum severe hypertension, can have devastating consequences including maternal death. Objective: This review aims to increase the knowledge and skills of women's health care providers in understanding, diagnosing, and managing hypertension in the postpartum period. Results: Hypertension complicating pregnancy, including postpartum, is defined as systolic blood pressure 140 mm Hg or greater and/or diastolic blood pressure 90 mm Hg or greater on 2 or more occasions at least 4 hours apart...
April 2017: Obstetrical & Gynecological Survey
https://www.readbyqxmd.com/read/28358601/pharmacogenetics-in-the-treatment-of-pre-eclampsia-current-findings-challenges-and-perspectives
#3
Marcelo R Luizon, Ana Ct Palei, Ricardo C Cavalli, Valeria C Sandrim
Pre-eclampsia (PE) is defined as pregnancy-induced hypertension and proteinuria, and is a major cause of maternal and perinatal morbidity and mortality. A large subgroup of pregnant women with PE is nonresponsive to antihypertensive drugs, including methyldopa, nifedipine and hydralazine. Pharmacogenomics may help to guide the individualized therapy for this nonresponsive subgroup. However, just a few pharmacogenetic studies examined the effects of genetic polymorphisms on response to antihypertensive drugs in PE, and the criteria of responsiveness used to define responsive or nonresponsive subgroups to antihypertensive therapy should be replicated by others...
March 30, 2017: Pharmacogenomics
https://www.readbyqxmd.com/read/28348009/polymerization-incompetent-uromodulin-in-the-pregnant-stroke-prone-spontaneously-hypertensive-rat
#4
Sheon Mary, Heather Yvonne Small, Justyna Siwy, William Mullen, Ashok Giri, Christian Delles
The kidney is centrally involved in blood pressure regulation and undergoes extensive changes during pregnancy. Hypertension during pregnancy may result in an altered urinary peptidome that could be used to indicate new targets of therapeutic or diagnostic interest. The stroke-prone spontaneously hypertensive rat (SHRSP) is a model of maternal chronic hypertension. Capillary electrophoresis-mass spectrometry was conducted to interrogate the urinary peptidome in SHRSP and the control Wistar-Kyoto strain at three time points: prepregnancy and gestational days 12 and 18...
May 2017: Hypertension
https://www.readbyqxmd.com/read/28333939/maintenance-nifedipine-therapy-for-preterm-symptomatic-placenta-previa-a-randomized-multicenter-double-blind-placebo-controlled-trial
#5
Eric Verspyck, Claire de Vienne, Charles Muszynski, Michael Bubenheim, Isabella Chanavaz-Lacheray, Michel Dreyfus, Philippe Deruelle, Jacques Benichou
OBJECTIVE: To assess the impact of maintenance nifedipine therapy on pregnancy duration in women with preterm placenta previa bleeding. METHODS: PPADAL was a randomized, double-blind, placebo-controlled trial conducted between 05/2008 and 05/2012 in five French hospitals. The trial included 109 women, aged ≥ 18 years, with at least one episode of placenta previa bleeding, intact membranes and no other pregnancy complication, at gestational age 24 to 34 weeks and after 48 hours of complete acute tocolysis...
2017: PloS One
https://www.readbyqxmd.com/read/28333820/committee-opinion-no-692-emergent-therapy-for-acute-onset-severe-hypertension-during-pregnancy-and-the-postpartum-period
#6
(no author information available yet)
Acute-onset, severe systolic hypertension; severe diastolic hypertension; or both can occur during the prenatal, intrapartum, or postpartum periods. Pregnant women or women in the postpartum period with acute-onset, severe systolic hypertension; severe diastolic hypertension; or both require urgent antihypertensive therapy. Introducing standardized, evidence-based clinical guidelines for the management of patients with preeclampsia and eclampsia has been demonstrated to reduce the incidence of adverse maternal outcomes...
April 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28333812/committee-opinion-no-692-summary-emergent-therapy-for-acute-onset-severe-hypertension-during-pregnancy-and-the-postpartum-period
#7
(no author information available yet)
Acute-onset, severe systolic hypertension; severe diastolic hypertension; or both can occur during the prenatal, intrapartum, or postpartum periods. Pregnant women or women in the postpartum period with acute-onset, severe systolic hypertension; severe diastolic hypertension; or both require urgent antihypertensive therapy. Introducing standardized, evidence-based clinical guidelines for the management of patients with preeclampsia and eclampsia has been demonstrated to reduce the incidence of adverse maternal outcomes...
April 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28237334/functional-involvement-of-protein-kinase-c-rho-kinase-and-trpc3-decreases-while-plc-increases-with-advancement-of-pregnancy-in-mediating-oxytocin-induced-myometrial-contractions-in-water-buffaloes-bubalus-bubalis
#8
Abhishek Sharma, Udayraj P Nakade, Soumen Choudhury, Satish Kumar Garg
Present study unravels the involvement of different calcium signaling pathways in oxytocin-induced contractions in myometrium of non-pregnant and pregnant buffaloes during early and mid-pregnancy stages. Uteri of pregnant animals were more sensitive than of non-pregnant buffaloes. Phasic contractions and frequency of contraction significantly increased with advancement of pregnancy, while tonic contractions non-significantly and amplitude significantly decreased from six months pregnancy onward. Oxytocin produced concentration-dependent-contraction on isolated myometrial strips of pregnant and non-pregnant buffaloes and the dose response curves (DRCs) of oxytocin were significantly (P < 0...
April 1, 2017: Theriogenology
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
#9
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...
April 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28203390/soluble-vascular-cell-adhesion-molecule-1-and-magnesium-sulfate-with-nifedipine-treatment-in-indonesian-women-with-severe-pre-eclampsia
#10
REVIEW
Hotma Partogi Pasaribu, Herman Hariman, R Haryono Roeshadi, Stephen C L Koh
BACKGROUND: Endothelial cell activation in pre-eclampsia is associated with elevated soluble vascular cell adhesion molecule-1 (sVCAM-1) levels. The objective of the study was to determine whether sVCAM-1 levels in Indonesian women with pre-eclampsia were similar to other ethnic studies and to determine the effects of magnesium sulfate with nifedipine on blood pressure. METHODS: A total of 61 pregnant women were admitted, who had normal pregnancy (n = 25) and severe pre-eclampsia (n = 36)...
September 2016: Interventional Medicine & Applied Science
https://www.readbyqxmd.com/read/28068846/impact-of-tamsulosin-and-nifedipine-on-contractility-of-pregnant-rat-ureters-in-vitro
#11
Lisette Haddad, Stéphanie Corriveau, Eric Rousseau, Simon Blouin, Jean-Charles Pasquier, Yves Ponsot, Marie-Ève Roy-Lacroix
OBJECTIVES: To evaluate the in vitro effect of tamsulosin and nifedipine on the contractility of pregnant rat ureters and to perform quantitative analysis of the pharmacological effects. Medical expulsive therapy (MET) is commonly used to treat urolithiasis. However, this treatment is seldom used in pregnant women since no studies support this practice. METHODS: This was an in vitro study on animal tissue derived from pregnant Sprague-Dawley rats. A total of 124 ureteral segments were mounted in an organ bath system and contractile response to methacholine (MCh) was assessed...
January 31, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28068594/prevention-of-spontaneous-preterm-birth-guidelines-for-clinical-practice-from-the-french-college-of-gynaecologists-and-obstetricians-cngof
#12
REVIEW
Loïc Sentilhes, Marie-Victoire Sénat, Pierre-Yves Ancel, Elie Azria, Guillaume Benoist, Julie Blanc, Gilles Brabant, Florence Bretelle, Stéphanie Brun, Muriel Doret, Chantal Ducroux-Schouwey, Anne Evrard, Gilles Kayem, Emeline Maisonneuve, Louis Marcellin, Stéphane Marret, Nicolas Mottet, Sabine Paysant, Didier Riethmuller, Patrick Rozenberg, Thomas Schmitz, Héloïse Torchin, Bruno Langer
In France, 60,000 neonates are born preterm every year (7.4%), half of them after the spontaneous onset of labor. Among preventable risk factors of spontaneous prematurity, only cessation of smoking is associated with decreased prematurity (level of evidence [LE]1). It is therefore recommended (Grade A). Routine screening and treatment of vaginal bacteriosis is not recommended in the general population (Grade A). The only population for which vaginal progesterone is recommended is that comprising asymptomatic women with singleton pregnancies, no history of preterm delivery, and a short cervix at 16-24 weeks of gestation (Grade B)...
March 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28029463/-tocolysis-for-preterm-labor-without-premature-preterm-rupture-of-membranes
#13
REVIEW
M Doret, G Kayem
OBJECTIVES: To propose guidelines for clinical practice for tocolysis in preterm labor without premature preterm rupture of the membranes (PPROM). MATERIALS AND METHODS: Bibliographic searches were performed in the Medline and Cochrane databases and gynecologist and obstetricians' international society guidelines. It is important to note that most studies included women in preterm labour with and without PPROM. RESULTS: Compared with placebo, tocolytics are not associated with a reduction in neonatal mortality or morbidity (LE2)...
December 2016: Journal de Gynécologie, Obstétrique et Biologie de la Reproduction
https://www.readbyqxmd.com/read/27866274/ryanodine-receptor-type-3-does-not-contribute-to-contractions-in-the-mouse-myometrium-regardless-of-pregnancy
#14
Katsuhito Matsuki, Masashi Takemoto, Yoshiaki Suzuki, Hisao Yamamura, Susumu Ohya, Hiroshi Takeshima, Yuji Imaizumi
Ryanodine receptor type 3 (RyR3) is expressed in myometrial smooth muscle cells (MSMCs). The short isoform of RyR3 is a dominant negative variant (DN-RyR3) and negatively regulates the functions of RyR2 and full-length (FL)-RyR3. DN-RyR3 has been suggested to function as a major RyR3 isoform in non-pregnant (NP) mouse MSMCs, and FL-RyR3 may also be upregulated during pregnancy (P). This increase in the FL-RyR3/DN-RyR3 ratio may contribute to the strong contractions by MSMCs for parturition. In the present study, spontaneous contractions by the myometrium in NP and P mice were highly susceptible to nifedipine but were not affected by ryanodine...
November 20, 2016: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/27836377/-prevention-of-spontaneous-preterm-birth-excluding-preterm-premature-rupture-of-membranes-guidelines-for-clinical-practice%C3%A2-%C3%A2-text-of-the-guidelines-short-text
#15
REVIEW
L Sentilhes, M-V Sénat, P-Y Ancel, E Azria, G Benoist, J Blanc, G Brabant, F Bretelle, S Brun, M Doret, C Ducroux-Schouwey, A Evrard, G Kayem, E Maisonneuve, L Marcellin, S Marret, N Mottet, S Paysant, D Riethmuller, P Rozenberg, T Schmitz, H Torchin, B Langer
OBJECTIVES: To determine the measures to prevent spontaneous preterm birth (excluding preterm premature rupture of membranes)and its consequences. MATERIALS AND METHODS: The PubMed database, the Cochrane Library and the recommendations from the French and foreign obstetrical societies or colleges have been consulted. RESULTS: In France, premature birth concerns 60,000 neonates every year (7.4 %), half of them are delivered after spontaneous onset of labor...
December 2016: Journal de Gynécologie, Obstétrique et Biologie de la Reproduction
https://www.readbyqxmd.com/read/27680821/h5-second-trimester-vascular-function-parameters-in-women-with-chronic-hypertension-and-their-association-with-adverse-maternal-and-perinatal-outcomes
#16
L M Webster, J Fetherston, C Chmiel, C Nelson-Piercy, A Khalil, J Myers, L C Chappell
INTRODUCTION: Increased aortic systolic BP (SBPao), pulse wave velocity (PWVao) and augmentation index of the aorta (AIXao) are associated with increased cardiovascular morbidity. These measures may also be increased prior to the development of adverse maternal and perinatal outcomes. The aim of this study was to evaluate the association between haemodynamic parameters and adverse outcomes in women with chronic hypertension (CHT). METHODS: Women recruited to the PANDA study (Pregnancy And chronic hypertension: NifeDipine versus lAbetalol as antihypertensive treatment) had Arteriograph (Tensio Med) readings taken while sitting...
August 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27578562/oral-nifedipine-vs-intravenous-labetalol-for-treatment-of-pregnancy-induced-severe-pre-eclampsia
#17
RANDOMIZED CONTROLLED TRIAL
D-D Shi, F-Z Yang, L Zhou, N Wang
WHAT IS KNOWN AND OBJECTIVE: Pre-eclampsia is one of the most challenging diseases of pregnancy. Both nifedipine and labetalol have been used for treatment of pregnancy-induced severe pre-eclampsia. METHODS: In the present study, the efficacy and safety of oral nifedipine and intravenous labetalol for severe pre-eclampsia therapy were compared. Eligible pregnant women with severe pre-eclampsia (n = 147) were allocated to receive either oral nifedipine or intravenous labetalol...
December 2016: Journal of Clinical Pharmacy and Therapeutics
https://www.readbyqxmd.com/read/27567363/nifedipine-versus-placebo-in-the-treatment-of-preterm-prelabor-rupture-of-membranes-a-randomized-controlled-trial-assessment-of-perinatal-outcome-by-use-of-tocolysis-in-early-labor-apostel-iv-trial
#18
RANDOMIZED CONTROLLED TRIAL
Tobias A J Nijman, Elvira O G van Vliet, Christiana A Naaktgeboren, Katrien Oude Rengerink, Thomas S de Lange, Caroline J Bax, Kitty W M Bloemenkamp, Jim van Eyck, Marjolein Kok, Hubertina C J Scheepers, Mallory Woiski, Arie Franx, Ben Willem J Mol, Martijn A Oudijk
OBJECTIVE: Preterm birth is the most common cause of neonatal morbidity and mortality. Around one third of preterm deliveries starts with preterm prelabor rupture of membranes (PPROM). The aim of this trial was to study the effect of prolonged tocolysis with nifedipine versus placebo in women with PPROM on perinatal outcome and prolongation of pregnancy. STUDY DESIGN: The Apostel IV was a nationwide multicenter randomized placebo controlled trial. We included women with PPROM without contractions between 24(+0) and 33(+6) weeks of gestation...
October 2016: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/27554460/-management-of-arterial-hypertension-before-20weeks-gestation-in-pregnant-women
#19
Florent Seguro, Béatrice Duly Bouhanick, Bernard Chamontin, Jacques Amar
In the first 6 months of pregnancy, the primary goal of antihypertensive treatment is to prevent the complications of severe hypertension. Initiation of antihypertensive drug treatment is recommended in pregnant women with severe hypertension (blood pressure>160/110mmHg). Initiation of antihypertensive drug treatment should also be considered in pregnant women at high cardiovascular risk (diabetes, chronic kidney disease, personal history of cardiovascular disease) with moderate hypertension (blood pressure between 140-159/90-109mmHg)...
July 2016: La Presse Médicale
https://www.readbyqxmd.com/read/27550838/nifedipine-maintenance-tocolysis-and-perinatal-outcome-an-individual-participant-data-meta-analysis
#20
REVIEW
Eog van Vliet, G H Dijkema, E Schuit, K Y Heida, C Roos, Jam van der Post, E C Parry, L McCowan, D J Lyell, Y Y El-Sayed, D B Carr, A L Clark, Z A Mahdy, M Uma, N C Sayin, G F Varol, B W Mol, M A Oudijk
BACKGROUND: Preterm birth is the leading cause of neonatal mortality and morbidity in developed countries. Whether continued tocolysis after 48 hours of rescue tocolysis improves neonatal outcome is unproven. OBJECTIVES: To evaluate the effectiveness of maintenance tocolytic therapy with oral nifedipine on the reduction of adverse neonatal outcomes and the prolongation of pregnancy by performing an individual patient data meta-analysis (IPDMA). SEARCH STRATEGY: We searched PubMed, Embase, and Cochrane databases for randomised controlled trials of maintenance tocolysis therapy with nifedipine in preterm labour...
October 2016: BJOG: An International Journal of Obstetrics and Gynaecology
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