Quantitative measurements of celeration times and indexes in the ductus venosus spectral Doppler waveforms in normal fetuses
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Abstract
Background
Ductus venosus spectral waveform has two peaks and two nadirs: S, v, D and a velocities, which are obtained after to some extent of accelerations or decelerations throughout a cardiac cycle. It is aimed to define the actual celeration times and indexes and their relationships with the fetal heart rate (FHR).
Methods
The acceleration times and indexes were measured in 357 patients between 11 and 40 weeks of pregnancies with low risk.
Results
The FHR has a gradual increasing negative correlation from time for S to time for a with each of the cardiac times of phases according to the statistical analysis (correlations were minus 190, 269, 407 and 541 for S, v, D and a phase times, respectively). The acceleration aS and the deceleration Da have positive correlations with the FHR; however, the deceleration Sv and the acceleration vD do not correlate with the FHR.
Conclusion
The deceleration Da time and index are the main components for determining the FHR in fetuses. Therefore, the atrial contraction is the strongest component for determining the FHR in fetuses.
Author contributions: Cemil Gürses: Study design, imaging and measurements, data collection. Burak Karadağ: Study design, data entry and statistical analysis. Onur Erol: Study design, writing and final approval. All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: None declared.
Employment or leadership: None declared.
Honorarium: None declared.
Competing interests: The funding organization(s) played no role in the study design; in the collection, analysis, and interpretation of data; in the writing of the report; or in the decision to submit the report for publication.
References
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Articles in the same Issue
- Frontmatter
- Corner of Academy
- Operative vaginal delivery: a review of four national guidelines
- Mini Review
- Drug exposure during pregnancy and fetal cardiac function – a systematic review
- Original Articles – Obstetrics
- Pregnancy outcomes among women with peptic ulcer disease
- The effect of placental elasticity on intraoperative bleeding in pregnant women with previous cesarean section
- Cellular immune responses in amniotic fluid of women with preterm prelabor rupture of membranes
- Prenatal findings, neonatal symptoms and neurodevelopmental outcome of congenital cytomegalovirus infection in a university hospital in Montreal, Quebec
- Maternal obesity influences the endocrine cord blood profile of their offspring
- Value of cervicovaginal fluid cytokines in prediction of fetal inflammatory response syndrome in pregnancies complicated with preterm premature rupture of membranes (pPROM)
- Reliability of strain elastography using in vivo compression in the assessment of the uterine cervix during pregnancy
- Original Articles – Fetus
- Comparison of strain and dyssynchrony measurements in fetal two-dimensional speckle tracking echocardiography using Philips and TomTec
- Quantitative measurements of celeration times and indexes in the ductus venosus spectral Doppler waveforms in normal fetuses
- Original Articles – Newborns
- Evaluation of cerebral oxygenation and perfusion in small for gestational age neonates and neurodevelopmental outcome at 24–36 months of age
- Measurement of inotropy and systemic oxygen delivery in term, low- and very-low-birth-weight neonates using the Ultrasonic Cardiac Output Monitor (USCOM)
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