scholarly journals Hemodynamics changes in late manifestation of natal trauma of spinal cord’s cervical department

2021 ◽  
Vol XXX (3-4) ◽  
pp. 36-38
Author(s):  
V. F. Prusakov
Keyword(s):  
Blood Flow ◽  
Occult Blood ◽  
Shoulder Girdle ◽  
Late Complications ◽  
Functional Tests ◽  
Vertebral Arteries ◽  
Circulatory Insufficiency ◽  
Late Manifestation

Hemodynamics of children with natal trauma of spinal cords cervical department was studied. It was determined, that among numerous manifestations of late complications of natal cervical traumas amyotrophy syndrome of shoulder girdle is widely spread, in which in 65% of cases hemodynamics insufficiency is determined in the carotid region, and in 37% - in vertebro-basilar region. Functional tests allowed to determine occult blood flow insufficiency in vertebro-basilar region in 80% of cases, thus confirming presence of chronic circulatory insufficiency in the system of vertebral arteries in patients with amyotrophy syndrome of shoulder girdle.

Assessment of Coronary Microcirculation During Cardiac Catheterization

2018 ◽  
Vol 24 (25) ◽  
pp. 2950-2953
Author(s):  
Sasko Kedev ◽  
Ivan Vasilev
Keyword(s):  
Blood Flow ◽  
Coronary Angiography ◽  
Myocardial Blood Flow ◽  
Functional Tests ◽  
Fractional Flow ◽  
Catheterization Laboratory ◽  
Flow Reserve ◽  
Objective Evidence ◽  
Value Based Care ◽  
User Friendly

Functional tests used in the catheterization laboratory have emerged as a very important adjunctive tool to coronary angiography that can identify patients with myocardial blood flow impairment. Fractional Flow Reserve (FFR) measurement is highly recommended for detection of ischemia-related coronary lesion(s) when objective evidence of vessel-related ischemia is not available. Recently, the much simpler instantaneous wave free ratio (iFR) was proposed as an alternative to FFR without the requirement for administration of vasodilators. More user-friendly techniques like iFR might further contribute to value-based care in coronary interventions.

Cerebral Blood Flow Volume in Posterior Circulation Ischemic Disorders

2021 ◽  
pp. 154431672110539
Author(s):  
Anastasiya Yu. Vishnyakova ◽  
Nataliya M. Medvedeva ◽  
Alexander B. Berdalin ◽  
Svetlana E. Lelyuk ◽  
Vladimir G. Lelyuk
Keyword(s):  
Blood Flow ◽  
Healthy Volunteers ◽  
Internal Carotid ◽  
Duplex Sonography ◽  
Posterior Circulation ◽  
Control Group ◽  
Vertebrobasilar Insufficiency ◽  
Flow Volume ◽  
Blood Flow Volume ◽  
Vertebral Arteries

Objective: The aim of this study was to determine blood flow volume (BFV) in the normal state and its features in patients with acute posterior circulation ischemic strokes (PCIS) and vertebrobasilar insufficiency (VBI) using color duplex sonography (DS).Methods: The study included DS data from 96 patients with verified PCIS (66 men and 30 women, aged 64±13 years) and 29 adults with VBI (17 men and 12 women, aged 66±11 years). The control group consisted of 65 healthy male volunteers of different ages.Results: In asymptomatic healthy volunteers, there was a significant decrease in BFV in the internal carotid artery (ICA) with age (502 ml/min in young people, 465 ml/min in the older subgroup) with rS = −0.24 ( p = 0.05), and the aggregated BFV in the vertebral arteries (VAs) turned out to be almost constant (141–143 ml/min). In patients with VBI, the aggregated BFV in the VAs (144 ml/min) did not differ from that in healthy volunteers, but the BFV values in the ICAs were significantly lower (325 ml/min). In patients with PCIS, the aggregated BFV in the ICAs was also significantly lower (399 ml/min) than in the control group but did not significantly differ from that in patients with VBI. In patients with PCIS, there was a significant decrease in the aggregated BFV in the VAs (105 ml/min), which distinguished this group from other examined patients.Conclusions: A significant decrease the BFV in the VA was observed only in patients with PCIS and was associated with the presence of steno-occlusive diseases (SOD) more often in the left VA. Patients with VBI had the most pronounced decrease in BFV in the ICA.

The relationship between an aortic isthmus blood flow velocity index and the postnatal neurodevelopmental status of fetuses with placental circulatory insufficiency

2005 ◽  
Vol 192 (2) ◽  
pp. 497-503 ◽  
Author(s):  
Jean-Claude Fouron ◽  
Julie Gosselin ◽  
Marie-Josée Raboisson ◽  
Julie Lamoureux ◽  
Claudine-Amiel Tison ◽  
...  
Keyword(s):  
Blood Flow ◽  
Flow Velocity ◽  
Blood Flow Velocity ◽  
Aortic Isthmus ◽  
Circulatory Insufficiency ◽  
The Relationship

scholarly journals Dynamics of the speed of blood flow in the arteries of the bone regenerate of the limbs and in the brain arteries during functional tests and changes in the treatment mode

2019 ◽  
Vol 17 (4) ◽  
pp. 51-56 ◽  
Author(s):  
V. A. Schurov
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Flow Velocity ◽  
Treatment Regimen ◽  
Blood Flow Velocity ◽  
Outpatient Treatment ◽  
Lower Leg ◽  
Temporary Increase ◽  
Functional Tests ◽  
Vascular Bed

The results of a comparative study of the linear velocity of blood flow in the arteries of the bone regenerate in patients with fractures of the leg and shoulder bones and in the process of Ilizarov treatment are analyzed. Studies were conducted at rest and when performing a number of functional tests (orthostatic, muscular and with a dosed axial load on the limb). The effect of stress on the state of regional and cerebral blood flow in the conditions of inpatient treatment and after the transfer of patients to the outpatient treatment regimen was assessed.Material and methods. 41 adult patients with a closed diaphyseal fracture of the humerus and 57 patients with a fracture of the tibia bones during Ilizarov treatment were examined. The blood flow in the regenerate and along the middle cerebral arteries was determined by the method of ultrasonic doppler sonography.Results. With an increase in the functional load on the limb in patients with fractures of the humerus and tibial bones, respectively, up to 10 and 30 kgf, a temporary increase in the blood flow velocity in the arteries of the bone regenerate was observed. Large values of the load on the lower leg, accompanied by the acceleration of blood flow, indicate a better protection of the vascular bed of the tibial regenerate. The magnitude of the decrease in blood flow velocity in the regeneration of the lower leg arising from the behavior of an orthostatic test in the course of treating patients increased from 21 to 37 %, and indicated an increase in the reactivity of the vascular bed. In patients with injuries of the shoulder and lower leg, the transfer to the outpatient treatment regimen was accompanied by a statistically significant (p≤0.001) increase in the duration of the fixation period, respectively, to 82±3 and 94±7 days, a decrease in the increased blood flow velocity in the middle cerebral artery on the contralateral side by 43 % and 57 % and an increase in the magnitude of changes in cerebral blood flow rate during functional muscle test by 50 and 67 %. 

scholarly journals Reconfiguration of the Carotid Artery after Angioplasty and Stenting: A Case Report and Review of the Literature

2015 ◽  
Vol 4 (1-2) ◽  
pp. 38-42 ◽  
Author(s):  
Gelin Xu ◽  
Xinying Fan ◽  
Minmin Ma ◽  
Xinfeng Liu
Keyword(s):  
Blood Flow ◽  
Case Report ◽  
Carotid Artery ◽  
Review Of The Literature ◽  
Artery Wall ◽  
Vertebral Arteries ◽  
Bilateral Carotid ◽  
Angioplasty And Stenting ◽  
Distal Occlusion ◽  
Distal Artery

Severe carotid stenosis or occlusion may cause insufficient blood flow and lead to distal artery wall collapse and extensive lumen contraction. Whether this ‘adaptive narrowing' can restitute after carotid recanalization is unclear. We report a patient with global ischemia due to occlusions of bilateral carotid and right vertebral arteries. The occluded left carotid was recanalized successfully with angioplasty and stenting. The adaptively narrowed distal carotid did not restitute immediately but regained its morphology 1 week after the procedure. Carotid adaptive narrow distal occlusion or stenosis may not regain its original morphology immediately but several days after recanalization. This knowledge is instructive for treating occlusive carotid diseases.

scholarly journals A Rare Case of Intermittent Claudication Associated with Impaired Arterial Vasodilation

2017 ◽  
Vol 2017 ◽  
pp. 1-5
Author(s):  
J. J. Posthuma ◽  
K. D. Reesink ◽  
M. Schütten ◽  
C. Ghossein ◽  
M. E. Spaanderman ◽  
...  
Keyword(s):  
Blood Flow ◽  
Nitrous Oxide ◽  
Intermittent Claudication ◽  
Vascular Function ◽  
Healthy Subjects ◽  
Rare Case ◽  
Unknown Origin ◽  
The Elderly ◽  
Vascular Pathology ◽  
Functional Tests

Exercise-related intermittent claudication is marked by reduced blood flow to extremities caused by either stenosis or impaired vascular function. Although intermittent claudication is common in the elderly, it rarely occurs in the young and middle-aged individuals. Here, we report a case of exercise-related claudication in a 41-year-old woman, in the absence of overt vascular pathology. Using a series of imaging and functional tests, we established that her complaints were due to impaired arterial vasodilation, possibly due to a defect in nitrous oxide-mediated dilation. The symptoms were reversible upon administration of a calcium antagonist, showing reversibility of the vascular impairment. Identification of reversible vascular “stiffness” merits consideration in young and otherwise healthy subjects with claudication of unknown origin.

Sign in / Sign up

Export Citation Format

Share Document