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Eroğlu H, Turgal M, Altınboğa O, Karakoç G, Sarsmaz K, Yucel A. Effect of Nifedipine Used in the Treatment of the Threat of Preterm Labor on Total Uterine Artery Blood Volume Flow Rate. Z Geburtshilfe Neonatol 2023; 227:377-382. [PMID: 37487520 DOI: 10.1055/a-2109-5279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
PURPOSE Evaluation of the effect of maternal nifedipine treatment on total uterine artery blood volume flow rate (TVFR). METHODS In this prospective study, 43 women who were admitted to the Perinatology Department of the University of Health Sciences Etlik Zübeyde Hanım Gynecology Training and Research Hospital, with the diagnosis of the threat of preterm labor, and 40 healthy pregnant women, who were randomly selected as the control group, were evaluated between July 1, 2018, and September 1, 2018. A transabdominal ultrasound examination of uterine arteries was performed both before and 48 hours after administration of oral nifedipine for TVFR measurement. For the final analysis, the TVFR levels of the group diagnosed with the threat of preterm labor and the control group were compared. RESULTS There was no significant difference in either uterine artery pulsatility index or resistance index values as well as the diameters of the uterine arteries after nifedipine treatment (p>0.05 for all). Total uterine artery blood volume flow rate (TVFR) was 424.66±236.74 mL/min before and 543.39±309.68 mL/min after treatment with nifedipine and was statistically significantly higher (p < 0.05). CONCLUSIONS Our study showed a statistically significant increase in total uterine artery blood volume flow rate 48 hours after oral nifedipine treatment.
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Affiliation(s)
- Hasan Eroğlu
- Department of Perinatology, Etlik Lady Zübeyde Gynaecology Education and Research Hospital, Ankara, Turkey
| | - Mert Turgal
- Department of Perinatology, Etlik Lady Zübeyde Gynaecology Education and Research Hospital, Ankara, Turkey
| | - Orhan Altınboğa
- Department of Perinatology, Etlik Lady Zübeyde Gynaecology Education and Research Hospital, Ankara, Turkey
| | - Gökhan Karakoç
- Department of Perinatology, Etlik Lady Zübeyde Gynaecology Education and Research Hospital, Ankara, Turkey
| | - Kemal Sarsmaz
- Department of Perinatology, Etlik Lady Zübeyde Gynaecology Education and Research Hospital, Ankara, Turkey
| | - Aykan Yucel
- Department of Perinatology, Etlik Lady Zübeyde Gynaecology Education and Research Hospital, Ankara, Turkey
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Grin L, Laish-Farkash A, Bruoha S, Rabinovich M, Harlev A, Anteby E, Yosefy C, Shenhav S. Effects of nifedipine on endothelial function, assessed by flow-mediated vasodilatation in pregnant patients. J Matern Fetal Neonatal Med 2021; 35:5498-5503. [PMID: 33627026 DOI: 10.1080/14767058.2021.1885645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVES To evaluate the endothelial function, through flow-mediated vasodilation parameters from brachial artery test in women receiving nifedipine for acute tocolysis with threatened preterm delivery. METHODS In a prospective study in a university-affiliated hospital, each participant served as herself control. We evaluated various parameters of endothelial function in 22 patients between 27 and 33 weeks of gestation with a diagnosis of threatened preterm delivery (TPTD) before and after 48 h of nifedipine treatment. Each patient received 80 mg nifedipine per day. The assessment tool was Brachial artery reactivity test (BART). Primary outcome was flow mediated vasodilation (FMD). RESULTS The average participant's age was 27 ± 4.5 years, median gestational age of 28.5 weeks, BMI, kg/m2 (mean ± SD) 28.4 ± 3.3. Systolic blood pressure (mmHg) and diastolic blood pressure (mmHg) decreased from 108 ± 6 to 104 ± 5, p < .001 and from 66 ± 4 to 63 ± 4, p < .001, respectively. FMD (%) significantly decrease from 10.8 ± 6.1 to 7.2 ± 4.7, p = .03 prior to and after nifedipine treatment. The basal brachial artery diameter (mm) at rest was (3.19 ± 0.38 versus 3.39 ± 0.49, p = .28) before versus after nifedipine. The largest brachial artery diameter (mm) was (3.54 ± 0.35 versus 3.58 ± 0.44, p = .76) before versus after nifedipine. CONCLUSIONS Our results suggest unfavorable changes in FMD probably as a result of nifedipine used for acute tocolysis. Future prospective studies should try to evaluate the safety of acute and maintenance tocolytic therapy with nifedipine on endothelial function in pregnant women.
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Affiliation(s)
- Leonti Grin
- Department of Obstetrics and Gynecology, Barzilai University Medical Center, Ashkelon, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Negev, Israel
| | - Avishag Laish-Farkash
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Negev, Israel.,Department of Cardiology, Assuta University Medical Center, Ashdod, Israel
| | - Sharon Bruoha
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Negev, Israel.,Department of Cardiology, Barzilai University Medical Center, Ashkelon, Israel
| | - Mark Rabinovich
- Department of Obstetrics and Gynecology, Barzilai University Medical Center, Ashkelon, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Negev, Israel
| | - Avi Harlev
- Department of Obstetrics and Gynecology, Barzilai University Medical Center, Ashkelon, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Negev, Israel
| | - Eyal Anteby
- Department of Obstetrics and Gynecology, Barzilai University Medical Center, Ashkelon, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Negev, Israel
| | - Chaim Yosefy
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Negev, Israel.,Department of Cardiology, Barzilai University Medical Center, Ashkelon, Israel
| | - Simon Shenhav
- Department of Obstetrics and Gynecology, Barzilai University Medical Center, Ashkelon, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Negev, Israel
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Souza ASR, Wanderley GC, Pereira MEVDC, Franco MR, Sousa DIPD, Girão ECDS, Souza GFDA, Guerra GVDQL. Maternal and fetal parameters in pregnant woman undergoing tocolysis with nifedipine. REVISTA BRASILEIRA DE SAÚDE MATERNO INFANTIL 2020. [DOI: 10.1590/1806-93042020000200007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract Objectives: to evaluate the effects of nifedipine with tocolysis under maternal and fetal parameters. Methods: a cohort study with 40 pregnant women admitted at a high-risk pregnancy ward to inhibit premature labor between September/2010 to May/2012. Nifedipine was used as a 20mg sublingual attack dose and maintained 20mg every six and eight hours orally. The variables of the analysis were fetal heart rate (FHR), maternal heart rate (MHR), systolic blood pressure (SBP) and diastolic blood pressure (DBP), and amniotic fluid index (AFI). All the variables were evaluated prior to administrating nifedipine and approximately after 6 hours and every 24 hours, until hospital discharge. Results: there were no modification of the FHR (p=0.48) and the SBP (p=0.29). The MHR increased after 24 hours, but with no statistical difference (p=0.08), returning to similar levels as at admission within 48 hours. The DBP decreased at 6 (p=0.04) to 72 hours, being stable afterwards. The AFI decreased significantly at 24, 48 and 72 hours. Conclusions: the use of high doses of nifedipine with tocolysis causes a decrease of the maternal’s diastolic blood pressure and consequently decreases the amniotic fluid index, but probably without any clinical repercussions.
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Namazov A, Grin L, Karakus R, Uludogan M, Ayvaci H. An effect of maternal nifedipine therapy on fetoplacental blood flow: a prospective study. Arch Gynecol Obstet 2018; 298:685-688. [PMID: 29971560 DOI: 10.1007/s00404-018-4839-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Accepted: 06/08/2018] [Indexed: 10/28/2022]
Abstract
PURPOSE The aim of this study is to assess the effects of maternal nifedipine administration on placental and fetal blood flow. METHODS A total of 29 patients with preterm labor diagnosis admitted to the tertiary care center, Zeynep Kamil Hospital, were evaluated. Before and 24-48 h after administration of oral nifedipine, Doppler ultrasound scan was carried out to measure fetal middle cerebral artery, ductus venosus, umbilical artery, and maternal uterine artery blood flow. RESULTS After 24 and 48 h of therapy, there were no changes in mean PI and RI in the umbilical arteries and ductus venosus (p > 0.05). Fetal middle cerebral artery and maternal uterine artery PI and RI values showed a significant reduction 24-48 h after oral nifedipine therapy (p < 0.05). CONCLUSIONS Our study showed that 24 and 48 h after oral nifedipine therapy, there is a significant increase in fetal MCA and maternal uterine artery blood flow, while fetal umbilical artery and ductus venosus Doppler values do not change.
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Affiliation(s)
- Ahmet Namazov
- Department of Obstetrics and Gynecology, Barzilai University Medical Center, Ben-Gurion University of Negev, Faculty of Health Sciences, HaHistadrut street 2, Ashkelon, Israel.
| | - Leonti Grin
- Department of Obstetrics and Gynecology, Barzilai University Medical Center, Ben-Gurion University of Negev, Faculty of Health Sciences, HaHistadrut street 2, Ashkelon, Israel
| | - Resul Karakus
- Obstetrics and Gynecology Department, Zeynep Kamil Hospital, Istanbul, Turkey
| | - Mehmet Uludogan
- Obstetrics and Gynecology Department, Zeynep Kamil Hospital, Istanbul, Turkey
| | - Habibe Ayvaci
- Obstetrics and Gynecology Department, Zeynep Kamil Hospital, Istanbul, Turkey
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