Right atrium and superior vena cava flow velocity in man measured with the Doppler-Catheter Flowmeter-Telemetry system

Benchimol, Alberto; Stegall, H F; Gartlan, John L.; Barreto, Egeu C.; Goldstein, Marvin R.; Sandoval, Jose

doi:10.1016/0002-9343(70)90060-4

Cited by 41 publications

(4 citation statements)

References 11 publications

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“…The pattern of UV pulsations will depend on the degree of DV opening [5, 13, 14]. Fetal arrhythmia can also cause alternation in fetal heart function and changes in central venous pressure and venous blood flow velocity [4]. A change in fetal heart rate might therefore be the cause of some of the abnormal blood velocity waveforms in the present study.…”

Section: Discussionmentioning

confidence: 94%

“…Fetal systemic venous blood flow pulsates with a typical flow pattern directly related to increased central venous pressure [3, 4]. Increased central venous (right atrial) pressure will therefore alter the venous blood flow pattern with especially decreased diastolic blood flow velocities and often augment reversal of flow in end-diastole at the time of atrial contraction.…”

Section: Discussionmentioning

confidence: 99%

“…Blood velocity in the fetal systemic veins has a characteristic pulsating pattern as a reflection of pressure in the right cardiac atrium [3, 4]. Normal umbilical venous blood flow and flow in the portal circulation are even and without fluctuation due to the filtering effect of the ductus venosus.…”

Section: Introductionmentioning

confidence: 99%

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Venous Doppler in the Evaluation of Fetal Hydrops

Hofstaetter

Gudmundsson

2010

Obstetrics and Gynecology International

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Objective. To examine venous blood flow velocity in different types of fetal hydrops and its value in the prediction of outcome of pregnancies. Methods. Venous Doppler sonography was performed in 100 hydropic fetuses from 15 to 37 weeks of gestation. Blood velocity was recorded in the right hepatic vein (HV), the ductus venosus (DV) and in the intra-abdominal part of the umbilical vein (UV). Blood velocity indices were calculated and pulsations in the umbilical vein noted and grouped into a single, double or triple flow pattern. Blood velocity was related to cause of hydrops. Results. Mortality was noted in 51 cases of which 19 were by termination of pregnancy. Mortality in the 30 with normal venous blood velocity was 35%, but 58% in cases of abnormal Doppler. Abnormal HV and DV blood velocities were recorded in 39 and 34 cases, respectively and were strongly related to mortality (P < .04 and P < .003, resp.). UV pulsations were noted in 49 fetuses and were significantly related to mortality (P < .04). Mortality and abnormal venous velocities were most frequent in the low-output hydrops group (79% and 75%, resp.). Conclusions. Abnormal venous blood velocity is related to mortality in pregnancies complicated by fetal hydrops. Venous Doppler sonography should be a part of the routine work-up of pregnancies complicated by fetal hydrops.

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Section: Discussionmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 99%

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Venous Doppler in the Evaluation of Fetal Hydrops

Hofstaetter

Gudmundsson

2010

Obstetrics and Gynecology International

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“…Fetal systemic venous blood flow pulsates with a typical flow pattern directly related to increased central venous pressure [39,40].…”

Section: Discussionmentioning

confidence: 99%

Fetal Venous Doppler Study for Evaluation of Fetuses with Non-Immune Hydrops Fetalis

Awad¹,

Ashkar²,

Dayem³

et al. 2018

Gynecol Reprod Health

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Objective:The aim of this study was to evaluate the role of inferior vena cava, ductus venosus, and intrahepatic portion of umbilical vein Doppler in evaluation of cases of nonimmune fetal hydrops. Material and Method:This study was conducted at the Department of Obstetrics and Gynecology, faculty of medicine, Alexandria University on 37 pregnant females in second and third trimester pregnancy selected from the attendees of El-Shatby Maternity university hospital. The cases were allocated into 2 main groups: group 1: twenty seven pregnant women with nonimmune fetal hydrops. Group 2: ten normal pregnant women without non-immune fetal hydrops (control group). We excluded from our study cases of immune fetal hydrops.We studied preload index of inferior vena cava, preload index and A wave of ductus venosus, and intrahepatic umbilical vein maximal velocity. Result: Our results showed the presence of high statistical significant correlation between abnormally elevated preload index of inferior vena cava, ductus venosus and abnormal A wave of ductus venosus and nonimmunefetal hydrops group. There were also high statistical significant correlation between intrahepatic umbilical vein decreased maximal velocity and nonimmune fetal hydrops. These changes of the velocimetry in the Inferior vena cava, Ductus venosus, and Intrahepatic umbilical vein corresponding to changes in cardiac function and could be of value in predicting prognosis and outcome of pregnancy.Conclusion: Doppler velocimetry in the IVC, DV, and intrahepatic portion of UV is a useful tool in the workup of hydropic fetuses.

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