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[Velocimetry of the ductus venosus in the first stage of labor]. 2006

N Szunyogh, and P Zúbor, and S Galo, and J Visnovský, and J Danko
Gynekologicko-pôrodnicka klinika, Jeseniova lekárska fakulta, Univerzita Komenského, Martin. szunyogh.norbert@stonline.sk

OBJECTIVE To assess feasibility and physiological variation of fetal ductus venosus Doppler velocimetry during the first stage of labor between uterine contractions. METHODS A prospective cross-sectional study including 23 healthy women with low-risk pregnancies. Maximum velocities during ventricular systole (S) and atrial contraction (A) were recorded in the ductus venosus between contractions. Pulsatility index for veins (DV PIV) and the ductus venosus index (DVI) were also calculated. METHODS Department of Obstetrics and Gynecology, Jessenius Faculty of Medicine, Comenius University, Martin. RESULTS Acceptable ductus venosus waveforms were acquired in 19 fetuses (83%). The mean +/- SD values of the ductus venosus index and the pulsatility index were 0.46 +/- 0.07 (95% CI: 0.42-0.49) and 0.57 +/- 0.12 (95% CI: 0.51-0.63), respectively. The mean +/- SD values of maximum velocities during ventricular systole (S) and atrial contraction (A) were 65 +/- 8 cm/s and 35 +/- 5 cm/s, respectively. CONCLUSIONS Ductus venosus blood flow velocities can be assessed during labor. This calls for an extension of the detection possibilities of intrauterine fetal status and gives an idea to establish reference ranges for these circulation parameters during labor in the future.

UI MeSH Term Description Entries
D007747 Labor Stage, First Period from the onset of true OBSTETRIC LABOR to the complete dilatation of the CERVIX UTERI. Labor, First Stage,Cervical Dilatation,Cervical Dilatations,Dilatation, Cervical,Dilatations, Cervical,First Labor Stage,First Stage Labor
D009200 Myocardial Contraction Contractile activity of the MYOCARDIUM. Heart Contractility,Inotropism, Cardiac,Cardiac Inotropism,Cardiac Inotropisms,Contractilities, Heart,Contractility, Heart,Contraction, Myocardial,Contractions, Myocardial,Heart Contractilities,Inotropisms, Cardiac,Myocardial Contractions
D011247 Pregnancy The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH. Gestation,Pregnancies
D011673 Pulsatile Flow Rhythmic, intermittent propagation of a fluid through a BLOOD VESSEL or piping system, in contrast to constant, smooth propagation, which produces laminar flow. Flow, Pulsating,Perfusion, Pulsatile,Flow, Pulsatile,Flows, Pulsatile,Flows, Pulsating,Perfusions, Pulsatile,Pulsatile Flows,Pulsatile Perfusion,Pulsatile Perfusions,Pulsating Flow,Pulsating Flows
D001783 Blood Flow Velocity A value equal to the total volume flow divided by the cross-sectional area of the vascular bed. Blood Flow Velocities,Flow Velocities, Blood,Flow Velocity, Blood,Velocities, Blood Flow,Velocity, Blood Flow
D004628 Embryonic Structures The anatomical parts that make up an organism in the early stages of development. Embryo,Prenatal Structures,Presumptive Structures,Embryos,Embryonic Structure,Prenatal Structure,Presumptive Structure,Structure, Embryonic,Structure, Prenatal,Structure, Presumptive
D005260 Female Females
D005318 Fetal Heart The heart of the fetus of any viviparous animal. It refers to the heart in the postembryonic period and is differentiated from the embryonic heart (HEART/embryology) only on the basis of time. Fetal Hearts,Heart, Fetal,Hearts, Fetal
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014680 Veins The vessels carrying blood away from the CAPILLARY BEDS. Vein

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