scholarly journals Peculiarities of the reaction of the lower limbs venous blood flow to the orthostatic test in men with arterial hypertension

2019 ◽  
pp. 86-89
Author(s):  
T. F. Vagapov ◽  
V. M. Baev ◽  
S. V. Letyagina
Keyword(s):  
Blood Flow ◽  
Arterial Hypertension ◽  
Flow Rate ◽  
Femoral Vein ◽  
Venous Blood ◽  
Test Group ◽  
Blood Flow Rate ◽  
Lower Limbs ◽  
Control Group ◽  
Venous Blood Flow

A comparative analysis of the dynamics of lower limb vein angioscopy parameters in case of orthostasis between male patients (age 30–50 years) with arterial hypertension (test group – 60 people) and normal arterial pressure (control group – 27 people) was made. Orthostatic sample in all examined patients was characterized by a reliable increase in the diameter and area of vein section at a decrease in blood flow rate. However, in patients with hypertension the increase in the area of vein section was significantly less than in the control group. In orthostasis, the drop in blood flow rate in the total femoral vein was lower in men with hypertension than in men in the control group. In the great saphenous vein, a larger decrease in blood flow velocity was recorded than in the control group. In hypertension, no increase in the number of refluxes was recorded in orthostasis. Thus, hypertension in men is characterized by altered reaction of venous blood flow to orthostasis in both deep and saphenous veins.

scholarly journals Reduced External Iliac Venous Blood Flow Rate Is Associated with Asymptomatic Compression of the Common Iliac Veins

Medicina ◽  
2021 ◽  
Vol 57 (8) ◽  
pp. 835
Author(s):  
Yuan-Hsi Tseng ◽  
Chien-Wei Chen ◽  
Min-Yi Wong ◽  
Teng-Yao Yang ◽  
Yu-Hui Lin ◽  
...  
Keyword(s):  
Blood Flow ◽  
Lower Extremity ◽  
Flow Rate ◽  
Femoral Vein ◽  
Characteristic Curve ◽  
Venous Blood ◽  
Blood Flow Rate ◽  
Venous Blood Flow ◽  
Percentage Difference ◽  
The Common

Background and Objectives: Compression of the common iliac veins (CIV) is not always associated with lower extremity symptoms. This study analyzed this issue from the perspective of patient venous blood flow changes using quantitative flow magnetic resonance imaging. Materials and Methods: After we excluded patients with active deep vein thrombosis, the mean flux (MF) and mean velocity (MV) of the popliteal vein, femoral vein, and external iliac vein (EIV) were compared between the left and right sides. Results: Overall, 26 of the patients had unilateral CIV compression, of which 16 patients had symptoms. No significant differences were noted in the MF or MV of the veins between the two sides. However, for the 10 patients without symptoms, the EIV MF of the compression side was significantly lower than the EIV MF of the non-compression side (p = 0.04). The receiver operating characteristic curve and chi-squared analyses showed that when the percentage difference of EIV MF between the compression and non-compression sides was ≤−18.5%, the relative risk of associated lower extremity symptoms was 0.44 (p = 0.016). Conclusions: If a person has compression of the CIV, a decrease in EIV blood flow rate on the compression side reduces the rate of symptom occurrence.

Potential role of electrostimulation in augmentation of venous blood flow after total knee replacement: A pilot study

2015 ◽  
Vol 31 (4) ◽  
pp. 251-256 ◽  
Author(s):  
Seyhan Yilmaz ◽  
Murat Calbiyik ◽  
Behice Kaniye Yilmaz ◽  
Eray Aksoy
Keyword(s):  
Blood Flow ◽  
Total Knee Replacement ◽  
Knee Replacement ◽  
Femoral Vein ◽  
Venous Blood ◽  
Control Group ◽  
Venous Blood Flow ◽  
Female Ratio ◽  
Total Knee ◽  
Peak Blood

Aim To investigate the potential role of a novel electrostimulation device in augmenting the femoral vein venous blood flow following total knee replacement surgery. Material and methods A total of 30 consecutive patients undergoing total knee replacement were allocated to receive either peroneal nerve electrostimulation plus low molecular weight heparin and below-knee compression stockings (Group 1, electrostimulation group, n = 15, mean age: 63.40 ± 5.91 years, male: female ratio 9:6) or low molecular weight heparin and below-knee compression stockings alone (Group 2, control group, n = 15, mean age: 63.86 ± 7.47 years, male: female ratio 8:7). Electrostimulation was performed for 1 h in every 4 h after the operation. Peak blood velocity in the femoral vein was evaluated with Duplex ultrasonongraphy in supine position. Presence of leg edema and calf diameter was also taken into consideration as outcome measures, which were recorded both before surgery and at the time of discharge from hospital. Results Postoperative peak blood flow velocity in the femoral vein was significantly higher in electrostimulation group compared to control group (17.46 ± 2.86 cm/s vs. 13.84 ± 3.58 cm/s, p < 0.02). Electrostimulation group achieved a significant increase in peak blood flow velocity in the femoral vein after the operation (mean increase 67.48 ± 17.38%, p < 0.001). Conclusion Electrostimulation of the common peroneal nerve enhanced venous flow in the lower limb and may potentially be of use as a supplementary technique in deep venous prophylaxis following lower limb orthopedic operations.

scholarly journals Changes in lower extremity blood flow during advancing phases of pregnancy and the effects of special footwear

2017 ◽  
Vol 16 (3) ◽  
pp. 214-219 ◽  
Author(s):  
Marta Gimunová ◽  
Martin Zvonař ◽  
Kateřina Kolářová ◽  
Zdeněk Janík ◽  
Ondřej Mikeska ◽  
...  
Keyword(s):  
Blood Flow ◽  
Venous Blood ◽  
Cross Sectional Area ◽  
Popliteal Vein ◽  
Control Group ◽  
Venous Disease ◽  
Venous Blood Flow ◽  
Sectional Area ◽  
Cross Sectional ◽  
Experimental Group

Abstract Background During pregnancy, a number of changes affecting venous blood flow occur in the circulatory system, such as reduced vein wall tension or increased exposure to collagen fibers. These factors may cause blood stagnation, swelling of the legs, or endothelial damage and consequently lead to development of venous disease. Objectives The aim of this study is to evaluate the effect of special footwear designed to improve blood circulation in the feet on venous blood flow changes observed during advancing phases of pregnancy. Methods Thirty healthy pregnant women participated in this study at 25, 30, and 35 weeks of gestation. Participants were allocated at random to an experimental group (n = 15) which was provided with the special footwear, or a control group (n = 15). At each data collection session, Doppler measurements of peak systolic blood flow velocity and cross-sectional area of the right popliteal vein were performed using a MySonoU6 ultrasound machine with a linear transducer (Samsung Medison). The differences were compared using Cohen’s d test to calculate effect size. Results With advancing phases of pregnancy, peak systolic velocity in the popliteal vein decreased significantly in the control group, whereas it increased significantly in the experimental group. No significant change in cross-sectional area was observed in any of the groups. Conclusions Findings in the experimental group demonstrated that wearing the footwear tested may prevent venous blood velocity from reducing during advanced phases of pregnancy. Nevertheless, there is a need for further investigation of the beneficial effect on venous flow of the footwear tested and its application.

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.

Cerebral blood flow of children with vasovagal syncope

2014 ◽  
Vol 25 (2) ◽  
pp. 267-273 ◽  
Author(s):  
Barsan Tugba ◽  
Kilic Zubeyir ◽  
Uzuner Nevzat ◽  
Yildirim Ali ◽  
Ucar Birsen ◽  
...  
Keyword(s):  
Blood Flow ◽  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Flow Rate ◽  
Vasovagal Syncope ◽  
Blood Flow Rate ◽  
Tilt Test ◽  
Control Group ◽  
Group 2 ◽  
Group 1

AbstractIntroduction: We aimed to evaluate changes in the cerebral blood supply in children during vasovagal syncope and to clarify the diagnostic value of transcranial Doppler for vasovagal syncope. Materials and methods: Patients were divided into three groups. Group 1 consisted of 31 patients who were symptomatic and whose head-up tilt test was positive. Group 2 comprised 21 patients who were symptomatic but whose tilt test was negative. Group 3 included 22 healthy children. For the diagnosis of vasovagal syncope, the tilt test was applied. For the subjects of the patient and control groups, the tilt test was repeated. The flow rates of bilateral middle cerebral arteries were continuously and simultaneously recorded with temporal window transcranial Doppler. Results: There were no statistically significant differences between the three groups with respect to age and gender distribution (p>0.05). When the bed was at an upright position, the maximum blood flow rate of the right middle cerebral artery was lower in Group 1 than in Group 2, although the decrease was more significant in comparison to the healthy control group (p<0.05). The minimum blood flow rate of the right middle cerebral artery was lower in Group 1 than the Group 2, although the decrease was more significant in comparison with the healthy control group (p<0.05). The maximum blood flow rate of the left middle cerebral artery was significantly lower in Group 1 than in the control group (p<0.05). Conclusion: Minimum and maximum blood flow rates are significantly decreased in patients tilt test (+) patients with vasovagal syncope during orthostatic stress.

scholarly journals Features of structural and functional parameters of superficial veins of lower extremities in men with arterial hypertension

2019 ◽  
Vol 1 (16) ◽  
pp. 18-21
Author(s):  
T. F. Vagapov ◽  
V. M. Baev ◽  
L. N. Druzhina ◽  
C. V. Letyagina
Keyword(s):  
Blood Flow ◽  
Arterial Hypertension ◽  
Varicose Veins ◽  
Venous Blood ◽  
Lower Extremities ◽  
Chronic Venous Disease ◽  
Venous Disease ◽  
Venous Blood Flow ◽  
Cardiovascular Risks ◽  
Functional Parameters

The aim of the work was to assess the structural and functional parameters of the superficial veins of the lower extremities in men with arterial hypertension. A comparative analysis of the results of the angioscanning of the superficial veins of the lower extremities between 60 men with arterial hypertension and 27 men with normal blood pressure at the age of 30–50 years was performed. In hypertension, an increased rate of venous blood flow and signs of chronic vein diseases are recorded — an increased diameter and area of the lumen of the veins; abnormal venous reflux marked in 10 % of men; in 3 % — varicose veins and thrombotic masses, signs of postrombotic lesion of the superficial veins.Conclusion. For men with hypertension aged 30–50 years, there is an increased rate of venous blood flow and signs of chronic venous disease of the lower extremities: chronic venous insufficiency, varicose and postrombotic venous disease, which must be considered when stratifying cardiovascular risks and treating hypertension.

scholarly journals Evaluation of the efficacy and safety of compression garments in the treatment of patients with chronic lower limb vein diseases

2019 ◽  
pp. 34-41
Author(s):  
S. E. Katorkin ◽  
P. F. Kravtsov ◽  
M. A. Melnikov
Keyword(s):  
Blood Flow ◽  
Chronic Diseases ◽  
Clinical Efficacy ◽  
Lower Limb ◽  
Femoral Vein ◽  
Blood Flow Rate ◽  
Compression Therapy ◽  
Subjective Assessment ◽  
Lower Limbs ◽  
Compression Garments

Aim. To evaluate clinical efficacy, safety and compliance level of outpatient application of “TONUS ELAST” compression garments in patients with chronic diseases of lower limbs of C3-C4 clinical classes according to CEAP.Material and methods. Continuous compression therapy during 6 months with the use of “TONUS ELAST” garments was received by 34 patients (12 men and 22 women) with chronic diseases of the lower limbs of C3-C4 clinical classes. The average age was 67 ± 3.2 years. There were 26 (76%) patients with varicosity and 8 (24%) patients with postthrombophlebitic stage of different recanalization. Anamnesis duration was 16 ± 3.9 years. Dynamic analysis of subjective and objective clinical symptomatology, results of legometry, volumetry and ultrasound examination with registration of blood flow rate in the femoral vein according to the developed protocol was carried out.Results of the study. Clinical observation in the dynamics of the study and instrumental methods of examination confirm the significant clinical efficacy of “TONUS ELAST” garments of the 2nd class of compression as a means of conservative treatment of chronic diseases of C3-C4 clinical classes. Positive dynamics of subjective symptomatology with the achievement of the most successful result in the management of convulsive (96.6%) and painful (93.8%) syndromes was revealed. Reduction of the shin circumference was recorded in 100% of observations on the left lower limb and in 96,7% on the right one. Statistically significant positive dynamics of volumetric parameters was achieved after 3 months of compression therapy. The tendency to acceleration of blood flow in the femoral vein in 71,4% of observations was revealed. Laboratory analysis of hemostasiological parameters demonstrated compensatory normocoagulation. Absence of cases of individual intolerance and adverse effects of compression products indicates their safety. A high level of adherence of patients to the therapy is registered. Doctors and patients gave a positive subjective assessment of the effectiveness and consumer properties of the studied product.Conclusion. Compression garment “TONUS ELAST” of the 2nd class of compression can be recommended as a safe, effective and comfortable means of outpatient therapy and prevention of chronic diseases of lower limbs veins. 

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