Comparison of maternal third trimester hemodynamics between singleton pregnancy and twin pregnancy
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Romina-Marina Sima
und
Liana Pleș
Abstract
Objectives
The impedance cardiography (ICG) technique measures the variation of impedance in the thorax due to the physical contractile activity of the heart. Twin pregnancy is characterized by greater maternal hemodynamic changes than a singleton pregnancy.
Methods
In a study on 121 pregnant women in the last trimester we performed ICG, evaluating the following hemodynamic parameters: stroke volume, heart rate, cardiac output, ventricular ejection time, left ventricular ejection time, thoracic impedance, and systemic vascular resistance.
Results
The study included singleton and twin pregnancies. Heart rate values in women with single fetus was lower than in those carrying twins (85 vs. 100 beats/min, p=0.021) as were the stroke volume values (64 vs. 83 mL, p=0.010) and the cardiac output (p<0.0001). Systemic vascular resistance decreased in twin pregnancies compared to singleton pregnancy (p=0.023).
Conclusions
ICG studies are rare, and the validation of their results is an ongoing process. However, the ICG technique is applicable in the third trimester of pregnancy and can yield important information regarding the hemodynamic profile of singleton and twin pregnancies, revealing maternal heart changes specific to twin pregnancies.
Research funding: None declared.
Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.
Competing interests: Authors state no conflict of interest.
Informed consent: Informed consent was obtained from all individuals included in this study.
Ethical approval: The study complies with all the relevant national regulations, the tenets of the Helsinki Declaration, and with the authors’ Institutional Ethics Committee guidelines.
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© 2021 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Review
- Neonatal lupus erythematosus – practical guidelines
- Original Articles – Obstetrics
- Optimal timing to screen for asymptomatic bacteriuria during pregnancy: first vs. second trimester
- Amniotic fluid embolism – implementation of international diagnosis criteria and subsequent pregnancy recurrence risk
- COL1A1, COL4A3, TIMP2 and TGFB1 polymorphisms in cervical insufficiency
- Pregnancy and neonatal outcomes of twin pregnancies – the role of maternal age
- Comparison of maternal third trimester hemodynamics between singleton pregnancy and twin pregnancy
- Daily monitoring of vaginal interleukin 6 as a predictor of intraamniotic inflammation after preterm premature rupture of membranes – a new method of sampling studied in a prospective multicenter trial
- Association between the number of pulls and adverse neonatal/maternal outcomes in vacuum-assisted delivery
- Original Articles – Fetus
- The effect of nuchal umbilical cord on fetal cardiac and cerebral circulation-cross-sectional study
- Recognition of facial expression of fetuses by artificial intelligence (AI)
- Correlation of first-trimester thymus size with chromosomal anomalies
- Fetal intracranial structures: differences in size according to sex
- Original Articles – Neonates
- Antenatal care and perinatal outcomes of asylum seeking women and their infants
- Maturation of the cardiac autonomic regulation system, as function of gestational age in a cohort of low risk preterm infants born between 28 and 32 weeks of gestation
- Short Communication
- The impact of transfers from neonatal intensive care to paediatric intensive care
- Letter to the Editor
- Differential microRNA expression in placentas of small-for-gestational age neonates with and without exposure to poor maternal gestational weight gain
Artikel in diesem Heft
- Frontmatter
- Review
- Neonatal lupus erythematosus – practical guidelines
- Original Articles – Obstetrics
- Optimal timing to screen for asymptomatic bacteriuria during pregnancy: first vs. second trimester
- Amniotic fluid embolism – implementation of international diagnosis criteria and subsequent pregnancy recurrence risk
- COL1A1, COL4A3, TIMP2 and TGFB1 polymorphisms in cervical insufficiency
- Pregnancy and neonatal outcomes of twin pregnancies – the role of maternal age
- Comparison of maternal third trimester hemodynamics between singleton pregnancy and twin pregnancy
- Daily monitoring of vaginal interleukin 6 as a predictor of intraamniotic inflammation after preterm premature rupture of membranes – a new method of sampling studied in a prospective multicenter trial
- Association between the number of pulls and adverse neonatal/maternal outcomes in vacuum-assisted delivery
- Original Articles – Fetus
- The effect of nuchal umbilical cord on fetal cardiac and cerebral circulation-cross-sectional study
- Recognition of facial expression of fetuses by artificial intelligence (AI)
- Correlation of first-trimester thymus size with chromosomal anomalies
- Fetal intracranial structures: differences in size according to sex
- Original Articles – Neonates
- Antenatal care and perinatal outcomes of asylum seeking women and their infants
- Maturation of the cardiac autonomic regulation system, as function of gestational age in a cohort of low risk preterm infants born between 28 and 32 weeks of gestation
- Short Communication
- The impact of transfers from neonatal intensive care to paediatric intensive care
- Letter to the Editor
- Differential microRNA expression in placentas of small-for-gestational age neonates with and without exposure to poor maternal gestational weight gain
