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.

scholarly journals Effect of Active and Passive Mechanical Thromboprophylaxis and Consensual Effect on the Venous Blood Flow Velocity Among Hemiparetic Patients

2019 ◽  
Vol 25 ◽  
pp. 107602961983211 ◽  
Author(s):  
Gabriella Kiss ◽  
Béla Faludi ◽  
Brigitta Szilágyi ◽  
Alexandra Makai ◽  
Anita Velényi ◽  
...  
Keyword(s):  
Blood Flow ◽  
Flow Velocity ◽  
Blood Flow Velocity ◽  
Resting State ◽  
Femoral Vein ◽  
Venous Blood ◽  
Passive Movement ◽  
Venous Blood Flow ◽  
Ultrasound Device ◽  
Healthy Side

Our aim was to measure the venous blood flow velocity (VBFV) in case of hemiparetic patients, after passive and active thromboembolic methods, as well as the consensual effect in the hemiparetic limb following the active venous exercises in the healthy limb. We examined 215 patients, with the median age of 58.0 (55.0-63.0) years. The VBFV was measured with a HADECO BIDOP ES-100 V II type Doppler ultrasound device, using an 8 MHz head, on the femoral vein at the level of the hip joint. For statistical analysis, SPSS version 22 was used. After passive movement, on the hemiparetic side, compared to the value in resting state, the VBFV significantly (12.6; 11.6-13.5 cm/s; P < .001) increased. Following active venous exercises performed on the healthy side, the VBFV significantly (18.0; 15.6-19.6 cm/s; P < .001) increased compared to the value in resting state. Following the active venous exercises performed on the healthy side, the VBFV measured on the hemiparetic side (consensual effect) was significantly (15.1 [14.1-16.5] cm/s; P < .001) higher than the value on the hemiparetic side in resting state. Active and passive mechanical thromboprophylaxis methods can be effective. Movements of the healthy limb significantly increase the VBFV in the inactive limb, and patients can perform it themselves several times a day.

Monitoring of venous blood flow velocity during interhemispheric approach for deep seated lesions

1995 ◽  
Vol 137 (1-2) ◽  
pp. 44-47 ◽  
Author(s):  
T. Morimoto ◽  
T. Yamada ◽  
Y. Ishida ◽  
H. Nakase ◽  
T. Hoshida ◽  
...  
Keyword(s):  
Blood Flow ◽  
Flow Velocity ◽  
Blood Flow Velocity ◽  
Venous Blood ◽  
Venous Blood Flow ◽  
Interhemispheric Approach

scholarly journals The analysis of venous blood flow velocity increase during ankle exercise

2021 ◽  
Vol 70 (5) ◽  
pp. 327-335
Author(s):  
Minami Fujiwara ◽  
Takayuki Murakami ◽  
Yuki Yano ◽  
Atsuki Kanayama ◽  
Mayuka Minami ◽  
...  
Keyword(s):  
Blood Flow ◽  
Flow Velocity ◽  
Blood Flow Velocity ◽  
Venous Blood ◽  
Venous Blood Flow ◽  
Velocity Increase

Determination of venous blood flow velocity using digital videomicroscopy (A short methodical communication)

2010 ◽  
Vol 97 (4) ◽  
pp. 417-421
Author(s):  
Gergely Bárdossy ◽  
C. Lantos ◽  
G. Halász ◽  
E. Monos ◽  
G. Nádasy
Keyword(s):  
Blood Flow ◽  
Flow Velocity ◽  
Blood Flow Velocity ◽  
Venous Blood ◽  
Venous Blood Flow

Leg edema formation and venous blood flow velocity during a simulated long-haul flight

2007 ◽  
Vol 120 (4) ◽  
pp. 497-504 ◽  
Author(s):  
Markus Mittermayr ◽  
Dietmar Fries ◽  
Hannes Gruber ◽  
Siegfried Peer ◽  
Anton Klingler ◽  
...  
Keyword(s):  
Blood Flow ◽  
Flow Velocity ◽  
Blood Flow Velocity ◽  
Venous Blood ◽  
Venous Blood Flow ◽  
Edema Formation ◽  
Leg Edema

Effect of body position and graduated compression stocking length on femoral venous blood flow velocity

2003 ◽  
Vol 18 (4) ◽  
pp. 198-202
Author(s):  
A Limpus ◽  
W P Chaboyer ◽  
C Purcell ◽  
P J Schluter ◽  
H Gibbs ◽  
...  
Keyword(s):  
Blood Flow ◽  
Flow Velocity ◽  
Blood Flow Velocity ◽  
Body Position ◽  
Venous Blood ◽  
Vessel Diameter ◽  
Compression Stocking ◽  
Venous Blood Flow ◽  
Significant Difference ◽  
Three Body

Objectives: To measure the effect of graduated compression stocking (GCS) length and body position on peak femoral venous blood flow velocity (PVV) and vessel diameter (VD). Methods: Twenty healthy adult volunteers had PVV and VD measured, using colour Doppler ultrasound, at baseline in three body positions. Knee- or thigh-length GCS were assigned randomly.Arandom sequence of the three positions was used to measure PVV and VD. The procedure was repeated, after a two-hour washout period, using the other length GCS. Results: There was no significant difference in the mean change of PVV ( P =0.74) or VD ( P =0.54) measurements from the baseline between thigh- and knee-length GCS. However, significant mean changes in PVV ( P =0.02) and VD ( P <0.001) measurements were observed for the three body positions, after adjusting for baseline values. Conclusions: In healthy volunteers, thigh- and knee-length GCS do not have an effect on PVV or VD, and body position affects PVV significantly, with or without GCS.

Jugular venous blood flow velocity waveforms in human fetuses between 20 and 42 weeks of pregnancy

1997 ◽  
Vol 76 (10) ◽  
pp. 923-927 ◽  
Author(s):  
Beth Gross ◽  
Boris M. Petrikovsky ◽  
Frimmit Forman ◽  
John Pellerito ◽  
Francine S. Mandel ◽  
...  
Keyword(s):  
Blood Flow ◽  
Flow Velocity ◽  
Blood Flow Velocity ◽  
Venous Blood ◽  
Venous Blood Flow ◽  
Human Fetuses

scholarly journals Hemodynamic effects of combined antihypertensive therapy during exercise in men with arterial hypertension and chronic venous diseases

2021 ◽  
pp. 36-43
Author(s):  
S. V. Letyagina ◽  
V. M. Baev ◽  
T. Y. Agafonova
Keyword(s):  
Blood Flow ◽  
Flow Velocity ◽  
Antihypertensive Therapy ◽  
Blood Flow Velocity ◽  
Venous Blood ◽  
Chronic Venous Disease ◽  
Venous Disease ◽  
Venous Blood Flow ◽  
Venous Dilatation ◽  
Venous Diseases

Introduction. Currently, there is insufficient data on the effect of modern antihypertensive therapy (AHT) on venous circulation, especially during physiological stress.Aim of the study – the investigation was to study the hemodynamic effects of a combination of a calcium channel blocker (CCB) and an angiotensin-converting enzyme (ACE) inhibitor during exercise in men with arterial hypertension (AH) and chronic venous diseases (CVD).Material and methods. In 46 men 30–50 years old with AH on the background of AHT, a comparative assessment of the dynamics of SBP, DBP, peripheral venous pressure (PVP), ultrasound parameters of venous blood flow of the left leg in response to physical activity (Ruffier’s test) was performed. The parameters were assessed in 23 patients with hypertension without CVD and 23 patients with hypertension and CVD. We studied the reaction before and after 14 days of combined AHT with the use of CCB (Amlodipine) and an ACE inhibitor (Lisinopril).Results. Before treatment, the response to exercise in patients of both groups was the same and was manifested by a twofold increase in the area of the lumen of the veins and a drop in blood flow velocity. Patients with CVD before treatment with exercise were characterized by an altered systemic hemodynamic response, more frequent cases of venous dilatation and decreased blood flow velocity. After AHT with exercise, both groups showed normalization and identity of SBP. DBP, PVP, a decrease in the severity of venous dilatation and a decrease in blood flow velocity. Patients with CVD after AHT in response to exercise are characterized by more pronounced venous dilatation and higher blood flow velocity.Conclusion. After 14  days of  antihypertensive therapy in  patients with hypertension without chronic venous disease and in patients with hypertension and chronic venous disease during exercise normalization of systolic blood pressure, diastolic blood pressure, PVP, a decrease in venous dilatation and a decrease in blood flow velocity are noted. Patients with CVD after AHT under load are characterized by varicose veins and accelerated venous blood flow.

Sign in / Sign up

Export Citation Format

Share Document