scholarly journals The Effects of Different Type Vasodilator Agents on Radial Artery Blood Flow: A Placebo-Controlled Clinical Study

2014 ◽  
Vol 04 (06) ◽  
pp. 299-304
Author(s):  
Ahmet Feyzi Abacilar ◽  
Ugur Cetingok ◽  
Mehmet Beşir Akpınar ◽  
Omer Faruk Dogan
Keyword(s):  
Blood Flow ◽  
Clinical Study ◽  
Radial Artery ◽  
Vasodilator Agents ◽  
Artery Blood Flow ◽  
Controlled Clinical Study

scholarly journals Topical Menthol, Ice, Peripheral Blood Flow, and Perceived Discomfort

2013 ◽  
Vol 48 (2) ◽  
pp. 220-225 ◽  
Author(s):  
Robert Topp ◽  
Elizabeth R. Ledford ◽  
Dean E. Jacks
Keyword(s):  
Blood Flow ◽  
Radial Artery ◽  
Peripheral Blood ◽  
Arterial Blood Flow ◽  
Microvascular Blood Flow ◽  
Artery Blood Flow ◽  
Arterial Diameter ◽  
Arterial Blood ◽  
Treatment Conditions ◽  
Crushed Ice

Context Injury management commonly includes decreasing arterial blood flow to the affected site in an attempt to reduce microvascular blood flow and edema and limit the induction of inflammation. Applied separately, ice and menthol gel decrease arterial blood flow, but the combined effects of ice and menthol gel on arterial blood flow are unknown. Objectives To compare radial artery blood flow, arterial diameter, and perceived discomfort before and after the application of 1 of 4 treatment conditions. Design Experimental crossover design. Setting Clinical laboratory. Participants or Other Participants Ten healthy men, 9 healthy women (mean age = 25.68 years, mean height = 1.73 m, mean weight = 76.73 kg). Intervention(s) Four treatment conditions were randomly applied for 20 minutes to the right forearm of participants on 4 different days separated by at least 24 hours: (1) 3.5 mL menthol gel, (2) 0.5 kg of crushed ice, (3) 3.5 mL of menthol gel and 0.5 kg of crushed ice, or (4) no treatment (control). Main Outcome Measure(s) Using high-resolution ultrasound, we measured right radial artery diameter (cm) and blood flow (mL/min) every 5 minutes for 20 minutes after the treatment was applied. Discomfort with the treatment was documented using a 1-to-10 intensity scale. Results Radial artery blood flow decreased (P < .05) from baseline in the ice (−20% to −24%), menthol (−17% to −24%), and ice and menthol (−36% to −39%) treatments but not in the control (3% to 9%) at 5, 10, and 15 minutes. At 20 minutes after baseline, only the ice (−27%) and combined ice and menthol (−38%) treatments exhibited reductions in blood flow (P < .05). Discomfort was less with menthol than with the ice treatment at 5, 10, and 20 minutes after application (P < .05). Arterial diameter and heart rate did not change. Conclusions The application of 3.5 mL of menthol was similar to the application of 0.5 kg of crushed ice in reducing peripheral blood flood. Combining crushed ice with menthol appeared to have an additive effect on reducing blood flow.

scholarly journals A cooling cuff compared to a moist ice pack on radial artery blood flow and lumen diameter in healthy participants

2018 ◽  
Vol 23 ◽  
Author(s):  
Joshua Gernetzky ◽  
Laura O'Connor ◽  
Desiree Varatharajullu ◽  
Zombuso C. Dludla
Keyword(s):  
Blood Flow ◽  
Radial Artery ◽  
Repeated Measures ◽  
Acute Stage ◽  
Lumen Diameter ◽  
P Value ◽  
Artery Blood Flow ◽  
Post Intervention ◽  
Post Test ◽  
Ice Pack

Background: Cryotherapy is a favourable treatment for post-traumatic injuries in the acute stage because of its effect on inflammation and pain. A novel cooling cuff, which can be easily used and can be wrapped around the injured area that does not require freezing, has been developed. Its efficacy compared to traditional ice therapy has not been established.Aim: To establish the effect of a cooling cuff on radial artery blood flow and lumen diameter compared to moist ice.Setting: Chiropractic clinic and radiographic laboratory.Method: A controlled laboratory pre-test post-test investigation assessed asymptomatic participants who were randomly allocated into a moist ice pack (n = 22) or the cooling cuff (n = 21) group. The intervention was placed on the participants forearm over the radial artery for 15 min. Data was collected by a qualified diagnostic radiographer using Doppler ultrasound. Data was analysed, using repeated measures analysis of variance to assess changes in blood flow and lumen diameter pre- and post-intervention. A p-value of less than 0.05 was considered significant.Results: Both groups showed a significant decrease in radial artery blood flow (p < 0.001) after 15 min with no significant changes being observed in diameter size. No significant differences were observed between the groups for radial artery blood flow or diameter.Conclusion: The cooling cuff resulted in a similar effect on radial artery blood flow and lumen diameter as moist ice, indicating that patients and practitioners may utilise the cooling cuff in the acute phases of an injury to alter blood flow.

scholarly journals Near-infrared diffuse correlation spectroscopy tracks changes in oxygen delivery and utilization during exercise with and without isolated arterial compression

2020 ◽  
Vol 318 (1) ◽  
pp. R81-R88
Author(s):  
Wesley J. Tucker ◽  
Ryan Rosenberry ◽  
Darian Trojacek ◽  
Belinda Sanchez ◽  
Robert F. Bentley ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Blood Flow ◽  
Radial Artery ◽  
Brachial Artery ◽  
Oxygen Delivery ◽  
Near Infrared ◽  
Correlation Spectroscopy ◽  
Flow Index ◽  
Artery Blood Flow ◽  
Diffuse Correlation Spectroscopy

Near-infrared diffuse correlation spectroscopy (NIR-DCS) is an emerging technology for simultaneous measurement of skeletal muscle microvascular oxygen delivery and utilization during exercise. The extent to which NIR-DCS can track acute changes in oxygen delivery and utilization has not yet been fully established. To address this knowledge gap, 14 healthy men performed rhythmic handgrip exercise at 30% maximal voluntary contraction, with and without isolated brachial artery compression, designed to acutely reduce convective oxygen delivery to the exercising muscle. Radial artery blood flow (Duplex Ultrasound) and NIR-DCS derived variables [blood flow index (BFI), tissue oxygen saturation ([Formula: see text]), and metabolic rate of oxygen ([Formula: see text])] were simultaneously measured. During exercise, both radial artery blood flow (+51.6 ± 20.3 mL/min) and DCS-derived BFI (+155.0 ± 82.2%) increased significantly ( P < 0.001), whereas [Formula: see text] decreased −7.9 ± 6.2% ( P = 0.002) from rest. Brachial artery compression during exercise caused a significant reduction in both radial artery blood flow (−32.0 ± 19.5 mL/min, P = 0.001) and DCS-derived BFI (−57.3 ± 51.1%, P = 0.01) and a further reduction of [Formula: see text] (−5.6 ± 3.8%, P = 0.001) compared with exercise without compression. [Formula: see text] was not significantly reduced during arterial compression ( P = 0.83) due to compensatory reductions in [Formula: see text], driven by increases in deoxyhemoglobin/myoglobin (+7.1 ± 6.1 μM, P = 0.01; an index of oxygen extraction). Together, these proof-of-concept data help to further validate NIR-DCS as an effective tool to assess the determinants of skeletal muscle oxygen consumption at the level of the microvasculature during exercise.

Nifedipine in patients with Raynaud's syndrome -- effects on radial artery blood flow

1987 ◽  
Vol 8 (suppl K) ◽  
pp. 83-86 ◽  
Author(s):  
P. Lewis ◽  
J. V. Psaila ◽  
R. H. Morgan ◽  
W. T. Davies ◽  
J. P. Woodcock
Keyword(s):  
Blood Flow ◽  
Radial Artery ◽  
Artery Blood Flow ◽  
Raynaud’S Syndrome ◽  
Raynaud's Syndrome

Digital and radial artery blood flow in patients with Raynaud's phenomenon in response to nifedipine

1987 ◽  
Vol 1 (6) ◽  
pp. 403-408 ◽  
Author(s):  
R.H. Morgan ◽  
J.V. Psaila ◽  
W.T. Davies ◽  
G. Carolan ◽  
J.P. Woodcock
Keyword(s):  
Blood Flow ◽  
Radial Artery ◽  
Raynaud’S Phenomenon ◽  
Raynaud's Phenomenon ◽  
Artery Blood Flow

scholarly journals Evaluation of radial and ulnar artery blood flow after radial artery decannulation using colour Doppler ultrasound

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Li-jia Liu ◽  
Hong-mei Zhou ◽  
Huan-liang Tang ◽  
Qing-he Zhou
Keyword(s):  
Blood Flow ◽  
Doppler Ultrasound ◽  
Radial Artery ◽  
Repeated Measures ◽  
Peak Systolic Velocity ◽  
Ulnar Artery ◽  
Artery Blood Flow ◽  
Colour Doppler ◽  
Female Sex ◽  
Colour Doppler Ultrasound

Abstract Background There is a lack of reports in the literature regarding changes in radial artery blood flow after decannulation. The objective of this study was to investigate changes in radial and ulnar artery blood flow after radial artery decannulation using Doppler ultrasound and to explore the factors that influence radial artery blood flow recovery. Methods In current observational study, we used colour Doppler ultrasound to measure the cross-sectional area of the radial (SR) and ulnar artery (SU) and peak systolic velocity of the radial (PSVR) and ulnar artery (PSVU) for both hands at four time points in patients with radial artery cannulation: pre-cannulation (T0), 30 min after decannulation (T1), 24 h after decannulation (T2), and 7 days after decannulation (T3). Repeated measures analysis of variance and logistic regression analysis were performed to analyse the data. Results Overall, 120 patients were included in the present study. We obtained the following results on the side ipsilateral to the cannulation: compared with T0, the ratio of PSVU/PSVR increased significantly at T1 and T2 (p < 0.01); compared with T1, the ratio of PSVU/PSVR decreased significantly at T2 and T3 (p < 0.01); compared with T2, the ratio of PSVU/PSVR decreased significantly at T3 (p < 0.01). Female sex (OR, 2.76; 95% CI, 1.01–7.57; p = 0.048) and local hematoma (OR 3.04 [1.12–8.25]; p = 0.029) were factors that were significantly associated with the recovery of radial artery blood flow 7 days after decannulation. Conclusions There was a compensatory increase in blood flow in the ulnar artery after ipsilateral radial artery decannulation. Female sex and local hematoma formation are factors that may affect the recovery of radial artery blood flow 7 days after catheter removal.

Intrapericardial denervation: radial artery blood flow and heart rate responses to LBNP

1990 ◽  
Vol 68 (5) ◽  
pp. 2208-2213 ◽  
Author(s):  
K. H. McKeever ◽  
M. G. Skidmore ◽  
L. C. Keil ◽  
H. Sandler
Keyword(s):  
Heart Rate ◽  
Blood Flow ◽  
Flow Velocity ◽  
Radial Artery ◽  
Blood Flow Velocity ◽  
Rhesus Monkeys ◽  
Low Pressure ◽  
Left Ventricular ◽  
Artery Blood Flow ◽  
Cardiac Denervation

Eight rhesus monkeys were used to study responses of radial artery blood flow velocity (RABFV) and heart rate (HR) to low (0 to -20 mmHg) and high (0 to -60 mmHg) ramp exposures during supine lower body negative pressure (LBNP). These levels were chosen to separate peripheral vascular responses associated with stimulation of low- and high-pressure baroreceptors. Four monkeys had efferent and afferent cardiac denervation by use of the Randall procedure with pharmacological (phenylephrine and atropine) verification. Animals were studied 3 wk after surgery to avoid reinnervation. Findings were compared with those of four identically treated intact animals. Denervated animals showed no change in RABFV or HR during low-level LBNP; however, HR increased significantly (P less than 0.05) when LBNP reached -50 mmHg and blood flow velocity also fell (P less than 0.05) starting at -30 mmHg pressure. In contrast, intact animals showed steady decreases in RABFV during both high- and low-pressure protocols, with HR showing a 6-beat/min increase (P less than 0.05) starting at -20 mmHg pressure. As with denervated animals, intact animals showed a more pronounced increase in HR after reaching a level of -60 mmHg suction. Cardiac output (electromagnetic flowmeter, ascending aorta) fell significantly in both groups starting at -30 mmHg pressure. Left ventricular pressure (Konigsberg pressure cell) in three intact animals showed a progressive fall in systolic pressure starting at -10 mmHg suction, which became significant at -55 mmHg pressure. These results demonstrate that cardiac denervation by use of the Randall technique significantly affects RABFV and HR responses to LBNP in rhesus monkeys. The lack of RABFV change during LBNP in denervated animals suggests that these changes coupled with HR response can be used as an effective method to verify the completeness of denervation of low-pressure baroreceptors in animals that have undergone intrapericardial denervation.

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