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Ductus venosus blood flow velocity characteristics of fetuses with single umbilical artery.
Ultrasound Obstet Gynecol. 2003 Sep; 22(3):252-6.UO

Abstract

OBJECTIVES

Sonographic Doppler evaluation of the fetal ductus venosus has been proved to be useful in the evaluation of fetal cardiac function. The aim of this study was to investigate the ductus venosus blood flow profile in fetuses with single umbilical artery and to correlate it with the umbilical cord morphology.

METHODS

Fetuses at >20 weeks' gestation with single umbilical artery who were otherwise healthy were consecutively enrolled into the study. The sonographic examination included evaluation of the following Doppler parameters: umbilical artery resistance index, maximum blood flow velocity of the ductus venosus during ventricular systole (S-peak) and atrial contraction (A-wave), ductus venosus time-averaged maximum velocity (TAMXV), and pulsatility index for veins (PIV). The cross-sectional area of the umbilical cord and its vessels were measured in all cases. The Doppler and morphometric values obtained were plotted on reference ranges.

RESULTS

A total of 88 fetuses with single umbilical artery were scanned during the study period. Of these 52 met the inclusion criteria. The S-peak velocity, A-wave velocity, and TAMXV were below the 5th centile for gestational age in 57.7%, 59.6%, and 57.7% of cases, respectively. The PIV was within the normal range in 80.1% of cases. The umbilical vein cross-sectional area of fetuses with single umbilical artery was above the 95th centile for gestational age in 34.6% cases.

CONCLUSIONS

The ductus venosus blood flow pattern is different in fetuses with single umbilical artery from that in those with a three-vessel cord. This difference may be caused in part by the particular morphology of umbilical cords with a single artery.

Authors+Show Affiliations

Department of Obstetrics and Gynecology, University of Berne, Switzerland. luigi.raio@insel.chNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

12942496

Citation

Raio, L, et al. "Ductus Venosus Blood Flow Velocity Characteristics of Fetuses With Single Umbilical Artery." Ultrasound in Obstetrics & Gynecology : the Official Journal of the International Society of Ultrasound in Obstetrics and Gynecology, vol. 22, no. 3, 2003, pp. 252-6.
Raio L, Ghezzi F, Di Naro E, et al. Ductus venosus blood flow velocity characteristics of fetuses with single umbilical artery. Ultrasound Obstet Gynecol. 2003;22(3):252-6.
Raio, L., Ghezzi, F., Di Naro, E., Cromi, A., Buttarelli, M., Sonnenschein, M., & Dürig, P. (2003). Ductus venosus blood flow velocity characteristics of fetuses with single umbilical artery. Ultrasound in Obstetrics & Gynecology : the Official Journal of the International Society of Ultrasound in Obstetrics and Gynecology, 22(3), 252-6.
Raio L, et al. Ductus Venosus Blood Flow Velocity Characteristics of Fetuses With Single Umbilical Artery. Ultrasound Obstet Gynecol. 2003;22(3):252-6. PubMed PMID: 12942496.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ductus venosus blood flow velocity characteristics of fetuses with single umbilical artery. AU - Raio,L, AU - Ghezzi,F, AU - Di Naro,E, AU - Cromi,A, AU - Buttarelli,M, AU - Sonnenschein,M, AU - Dürig,P, PY - 2003/8/28/pubmed PY - 2003/10/21/medline PY - 2003/8/28/entrez SP - 252 EP - 6 JF - Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology JO - Ultrasound Obstet Gynecol VL - 22 IS - 3 N2 - OBJECTIVES: Sonographic Doppler evaluation of the fetal ductus venosus has been proved to be useful in the evaluation of fetal cardiac function. The aim of this study was to investigate the ductus venosus blood flow profile in fetuses with single umbilical artery and to correlate it with the umbilical cord morphology. METHODS: Fetuses at >20 weeks' gestation with single umbilical artery who were otherwise healthy were consecutively enrolled into the study. The sonographic examination included evaluation of the following Doppler parameters: umbilical artery resistance index, maximum blood flow velocity of the ductus venosus during ventricular systole (S-peak) and atrial contraction (A-wave), ductus venosus time-averaged maximum velocity (TAMXV), and pulsatility index for veins (PIV). The cross-sectional area of the umbilical cord and its vessels were measured in all cases. The Doppler and morphometric values obtained were plotted on reference ranges. RESULTS: A total of 88 fetuses with single umbilical artery were scanned during the study period. Of these 52 met the inclusion criteria. The S-peak velocity, A-wave velocity, and TAMXV were below the 5th centile for gestational age in 57.7%, 59.6%, and 57.7% of cases, respectively. The PIV was within the normal range in 80.1% of cases. The umbilical vein cross-sectional area of fetuses with single umbilical artery was above the 95th centile for gestational age in 34.6% cases. CONCLUSIONS: The ductus venosus blood flow pattern is different in fetuses with single umbilical artery from that in those with a three-vessel cord. This difference may be caused in part by the particular morphology of umbilical cords with a single artery. SN - 0960-7692 UR - https://www.unboundmedicine.com/medline/citation/12942496/Ductus_venosus_blood_flow_velocity_characteristics_of_fetuses_with_single_umbilical_artery_ L2 - https://doi.org/10.1002/uog.210 DB - PRIME DP - Unbound Medicine ER -