Transesophageal Doppler Measurement of Renal Arterial Blood Flow Velocities and Indices in Children

Aim of the Study. The three conventional pulse-diagnostic palpation locations (PLs) on both wrists areCun,Guan, andChi, and each location reveals different clinical information. To identify anatomical or hemodynamic specificity, we used ultrasonographic imaging to determine the arterial diameter, radial artery depth, and arterial blood flow velocity at the three PLs and at nearby non-PL segments.Methods. We applied an ultrasound scanner to 44 subjects and studied the changes in the arterial diameter and depth as well as in the average/maximum blood flow velocities along the radial artery at three PLs and three non-PLs located more proximally thanChi.Results. All of the measurements at all of the PLs were significantly different (P< 0.01). Artery depth was significantly different among the non-PLs; however, this difference became insignificant after normalization to the arm circumference.Conclusions. Substantial changes in the hemodynamic and anatomical properties of the radial artery around the three PLs were insignificant at the nearby non-PLs segments. This finding may provide a partial explanation for the diagnostic use of “Cun,Guan, andChi.”

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Derivation of systolic time intervals from doppler measurement of temporal arterial blood flow

The American Journal of Cardiology ◽

10.1016/0002-9149(81)90291-5 ◽

1981 ◽

Vol 47 (1) ◽

pp. 68-72 ◽

Cited By ~ 5

Author(s):

James A. Rothendler ◽

Edgar C. Schick ◽

Thomas J. Ryan

Keyword(s):

Blood Flow ◽

Systolic Time Intervals ◽

Arterial Blood Flow ◽

Doppler Measurement ◽

Time Intervals ◽

Arterial Blood ◽

Systolic Time

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Intracranial Blood Flow Velocity in Patients withβ-Thalassemia Intermedia Using Transcranial Doppler Sonography: A Case-Control Study

Anemia ◽

10.1155/2012/798296 ◽

2012 ◽

Vol 2012 ◽

pp. 1-4 ◽

Cited By ~ 4

Author(s):

Nahid Ashjazadeh ◽

Sajad Emami ◽

Peyman Petramfar ◽

Ehsan Yaghoubi ◽

Mehran Karimi

Keyword(s):

Blood Flow ◽

Transcranial Doppler ◽

Healthy Subjects ◽

Doppler Sonography ◽

Transcranial Doppler Sonography ◽

Arterial Blood Flow ◽

Thalassemia Intermedia ◽

Arterial Blood ◽

Ischemic Events ◽

Flow Velocities

Introduction. Patients withβ-thalassemia intermedia have a higher incidence of thromboembolic events compared to the general population. Previous studies have shown that patients with sickle cell disease, who are also prone to ischemic events, have higher intracranial arterial blood flow velocities measured by transcranial Doppler sonography (TCD). The aim of this study is to evaluate intracranial arterial flow velocities in patients withβ-thalassemia intermedia and compare the results with those found in healthy subjects.Methods. Sixty-four patients withβ-thalassemia intermedia and 30 healthy subjects underwent transcranial Doppler sonography.Results. Significantly higher flow velocities were found in intracranial arteries of patients compared to controls (P=0.001). Previously splenectomized patients with thrombocytosis showed higher flow velocities than nonsplenectomized patients without thrombosis.Conclusion. The increased flow velocities in patients withβ-thalassemia intermedia may point to a higher risk of ischemic events. Preventive measures such as blood transfusion or antiplatelet treatment may be beneficial in these patients.

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The Effect of Muscle Exercise on Perforators Flow: A Prospective Cohort Study

Medicina ◽

10.3390/medicina56070338 ◽

2020 ◽

Vol 56 (7) ◽

pp. 338

Author(s):

Francesco Amendola ◽

Luca Vaienti ◽

Giuseppe Cottone ◽

Giovanna Zaccaria ◽

Zvi Steinberger ◽

...

Keyword(s):

Blood Flow ◽

Muscle Blood Flow ◽

Arterial Blood Flow ◽

Anterior Tibial Artery ◽

Healthy Population ◽

Tibial Artery ◽

Arterial Blood ◽

Anterior Tibial ◽

Basal Flow ◽

Flow Velocities

Background and objectives: The metabolic response after exercise causes a significant increase in the muscle blood flow. While these effects are demonstrated for intra-muscular vessels, there is no evidence about the inter-muscular vessels, such as the septocutaneous perforators supplying the skin after they branch out from the deep source artery. The aim of our prospective study was to quantify the changes in the anterior tibial artery perforators arterial blood flow after mild isotonic exercise in a young and healthy population. Material and Methods: We performed a prospective analysis of 34 patients who were admitted to the Plastic Surgery Department from December 2019 to April 2020. Flow velocities of two previously identified anterior tibial artery perforators were recorded both before and after 10 complete flexion-extensions of the foot. The time to revert to basal flow was measured. We further classified the overmentioned patients based on their level of physical activity. Results: We registered a significant increase in systolic, diastolic and mean blood flow velocities both in proximal and distal anterior tibial artery perforators after exercise. Fitter patients exhibited a higher increase in proximal leg perforators than those who did less than three aerobic workouts a week. The time to return to basal flow ranged from 60 to 90 s. Conclusions: This was the first study to describe the effect of muscular activity on perforators blood flow. Even mild exercise significantly increases the perforator flow. Waiting at least two minutes at rest before performing the Doppler study, thus avoiding involved muscle activation, can notably improve the reliability of the pre-operative planning.

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