scholarly journals Venous Doppler in the Evaluation of Fetal Hydrops

2010 ◽  
Vol 2010 ◽  
pp. 1-7 ◽  
Author(s):  
C. Hofstaetter ◽  
S. Gudmundsson
Keyword(s):  
Doppler Sonography ◽  
Umbilical Vein ◽  
Venous Blood ◽  
Blood Velocity ◽  
Ductus Venosus ◽  
Venous Blood Flow ◽  
Fetal Hydrops ◽  
Routine Work ◽  
The Right ◽  
Work Up

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 ( and , resp.). UV pulsations were noted in 49 fetuses and were significantly related to mortality (). 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.

scholarly journals Absent Ductus Venosus Associated with Partial Liver Defect

2018 ◽  
Vol 2018 ◽  
pp. 1-4
Author(s):  
Kenji Horie ◽  
Hironori Takahashi ◽  
Daisuke Matsubara ◽  
Koichi Kataoka ◽  
Rieko Furukawa ◽  
...  
Keyword(s):  
Normal Development ◽  
Ultrasound Examination ◽  
Umbilical Vein ◽  
Vascular Anomaly ◽  
Male Infant ◽  
Ductus Venosus ◽  
Morphological Abnormality ◽  
Morgagni Hernia ◽  
The Right ◽  
Absent Ductus Venosus

Absent ductus venosus (ADV) is a rare vascular anomaly. We describe a fetus/neonate with ADV with a partial liver defect. A 41-year-old woman was referred to our institute because of fetal cardiomegaly detected by routine prenatal ultrasound, which revealed absence of ductus venosus with an umbilical vein directly draining into the right atrium, consistent with extrahepatic drainage type of ADV. She vaginally gave birth to a 3,096-gram male infant at 38 weeks of gestation. Detailed ultrasound examination revealed a defect of the hepatic rectangular leaf at half a month postnatally. He showed normal development at 1.5 years of age with the liver abnormality and a Morgagni hernia. Liver morphological abnormality should also be considered as a complication of ADV.

Assessment Of Venous Function After Major Gynecological Surgery With Heparin-Dihydroergotamine In The Prophylaxis Of DVT

1981 ◽  
Author(s):  
S Kunz ◽  
O M Burth ◽  
E Zimmerer
Keyword(s):  
Doppler Ultrasonography ◽  
Varicose Veins ◽  
Synergistic Effects ◽  
Venous Blood ◽  
Haemodynamic Effect ◽  
Venous Blood Flow ◽  
Venous Flow ◽  
Venous Function ◽  
The Right ◽  
Clinical Conditions

Dihydroergotamine (DHE) has been shown to have synergistic effects with heparin in the prophylaxis of DVT. To assess the hemodynamic efficacy of DHE in clinical conditions, 72 patients undergoing hysterectomy were randomly allocated to three groups receiving heparin/DHE, heparin or acenocoumarol. Venous function was measured by occlusion plethysmography and doppler ultrasonography. Diagnosis of DVT by 125-I-fibrinogen test.Results: Doppler Ultrasonography: The velocity of venous flow in the left V. femoralis was lower than at the right side in all groups before hysterectomy. After surgery, a significant increase from 11.2 to 15.5 cm/sec in the heparin/DHE group could be demonstrated. Heparin and acenocoumarol patients showed a tendency to lower venous return. The differences were more marked in women with vaginal hysterectomy.Occlusion plethysmography: No differences in venous capacity before and after operation could be found in the heparin and acenocoumarol group. A significant reduction (16%) was measured in heparin/DHE treated patients. The maximal venous outflow also was significantly reduced in this group (18%). This difference also was found in patients with varicose veins.Conclusions: The data confirm that DHE increases the velocity of venous blood flow in the legs by constricting the capacitance vessels. This haemodynamic effect could be demonstrated in clinical conditions.

OVARIAN VENOUS BLOOD FLOW IN NON-PREGNANT AND PREGNANT RATS

1977 ◽  
Vol 72 (2) ◽  
pp. 127-133 ◽  
Author(s):  
N. W. BRUCE ◽  
S. B. DIMMITT
Keyword(s):  
Blood Flow ◽  
Venous Blood ◽  
Chorionic Gonadotrophin ◽  
Human Chorionic Gonadotrophin ◽  
Venous Blood Flow ◽  
Radioactive Microspheres ◽  
Venous Outflow ◽  
Pregnant Rats ◽  
Flow Through ◽  
The Right

SUMMARY A modified venous outflow technique was used to measure ovarian blood flow in the rat. The rate of flow through the right ovary was 0·198 ± 0·009 (s.e.m.), 0·476 ± 0·076 and 0·958 ± 0·162 ml/min in six Day 0 (dioestrous), five Day 16 and six Day 22 pregnant rats respectively. The intravenous administration of 50 i.u. human chorionic gonadotrophin increased ovarian blood flow by 26 ± 4, 57 ± 19 and 46 ± 9% respectively, from 2 to 8 min after the injection. The present ovarian venous outflow results are substantially higher than those previously reported in the rat but agree with values determined with radioactive microspheres.

Portal venous blood flow distribution to liver and ductus venosus in newborn lambs

1982 ◽  
Vol 144 (3) ◽  
pp. 303-308 ◽  
Author(s):  
John J. Botti ◽  
Daniel I. Edelstone ◽  
Steve N. Caritis ◽  
Eberhard Mueller-Heubach
Keyword(s):  
Blood Flow ◽  
Venous Blood ◽  
Flow Distribution ◽  
Ductus Venosus ◽  
Venous Blood Flow ◽  
Blood Flow Distribution ◽  
Portal Venous Blood Flow ◽  
Portal Venous Blood

Formation of thrombus in the residual pulmonary trunk and regurgitation of the pulmonary valve after total cavopulmonary connection

1997 ◽  
Vol 7 (1) ◽  
pp. 44-49 ◽  
Author(s):  
Michael Hofbeck ◽  
Helmut Singer ◽  
Gernot Buheitel ◽  
Jan Sunnegardh ◽  
Jürgen V.D. Emde
Keyword(s):  
Pulmonary Valve ◽  
Venous Blood ◽  
Pulmonary Regurgitation ◽  
Pulmonary Trunk ◽  
Venous Blood Flow ◽  
Surgical Closure ◽  
Right Pulmonary Artery ◽  
The Right ◽  
Cavopulmonary Connection ◽  
Colour Doppler Echocardiography

AbstractThe procedure of total cavopulmonary connexion includes trans-section and closure of the pulmonary trunk, the systemic venous blood flow being directed to the pulmonary vascular bed by an anastomosis of the superior caval vein with the right pulmonary artery. Following this procedure, there remains a small residual pulmonary trunk. The purpose of our study was to obtain information about the fate of this residual trunk and its contained pulmonary valve. Using transthoracic echocardiography, we examined 29 patients (mean age 7 years 4 months) after a total cavopulmonary connexion (mean interval 17 months). We were able to obtain adequate visualization of the pulmonary valve and the pulmonary trunk in 23 of the patients. Pulmonary regurgitation was demonstrated by colour Doppler echocardiography in 13 pts (57%). Formation of thrombus in the residual pulmonary trunk was detected in one patient (4%) 6 months after the operation. One cerebrovascular embolic event occurred in a patient who had pulmonary regurgitation without formation of thrombus in the residual trunk 3 months after the total cavopulmonary connexion. Our findings show that pulmonary regurgitation is frequently present in patients after total cavopulmonary connexion. Although formation of thrombus in the residual pulmonary trunk seems to be less common, we recommend surgical closure of the pulmonary valve during this procedure so as to exclude the residual pulmonary trunk as a possible source of systemic emboli.

Ultrasound Assessment of Umbilical Cord Morphology in the First Trimester: A Feasibility Study

2015 ◽  
Vol 38 (3) ◽  
pp. 212-217 ◽  
Author(s):  
Rajit Narayan ◽  
Rahmah Saaid ◽  
Lars Pedersen ◽  
Jon Hyett
Keyword(s):  
Blood Flow ◽  
Flow Velocity ◽  
Umbilical Cord ◽  
Blood Flow Velocity ◽  
Umbilical Vein ◽  
Venous Blood ◽  
First Trimester ◽  
Maximum Diameter ◽  
Venous Blood Flow ◽  
Method Of Evaluation

Objective: The aim of this study was to determine whether morphology and measurement of the umbilical cord could be accurately assessed at the time of the 11- to 13+6-week scan. Methods: We conducted a prospective study of 100 consecutive women with singleton pregnancies at 11-13+6 weeks' gestation who were seen for routine aneuploidy screening. Transabdominal ultrasound scans were performed, and the distance between two adjacent coils of the umbilical artery was measured in a free loop of umbilical cord. The antenatal umbilical coiling index (aUCI) was calculated as the inverse of this measurement (aUCI = 1/intercoil distance in cm). The maximum diameter of the umbilical vein was measured. Umbilical venous blood flow velocity was obtained using standard Doppler technique. Interobserver variability was assessed. A subjective assessment of the cord was performed using the Sepulveda system of classification to compare the reproducibility of the observations between two observers. Results: The intended measurements could be obtained in all cases. The aUCI was found to decrease with advancing gestation, while the umbilical venous diameter increased with gestation. The umbilical venous blood flow velocity also increased with gestation. Interobserver consistency in the objective measurement of the aUCI was poor (kappa 0.146). However, the Sepulveda classification system was found to be applicable and reproducible at this period of gestation (kappa 0.601). Conclusions: Umbilical cord morphology can be consistently studied in the first trimester. A subjective method of evaluation of the morphology may be a more reproducible technique until measurement strategies are refined and operator experience developed.

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