Transcutaneous Bidirectional Carotid Artery Blood Flow Velocity Monitored Before, During and After Cardiopulmonary Bypass at Open-Heart Surgery

CHEST Journal ◽  
1973 ◽  
Vol 63 (4) ◽  
pp. 607-609 ◽  
Author(s):  
Hilton Buggs ◽  
Fred B. Balguma ◽  
Paul E. Johnson ◽  
Carter A. Printup ◽  
John R.F. Penido
Keyword(s):  
Blood Flow ◽  
Cardiopulmonary Bypass ◽  
Carotid Artery ◽  
Flow Velocity ◽  
Blood Flow Velocity ◽  
Heart Surgery ◽  
Open Heart Surgery ◽  
Open Heart ◽  
Artery Blood Flow

scholarly journals Carotid artery blood flow velocities during open-heart surgery and its association with delirium

Medicine ◽  
2019 ◽  
Vol 98 (50) ◽  
pp. e18234
Author(s):  
Martin H. Bernardi ◽  
Martin Wahrmann ◽  
Martin Dworschak ◽  
Clemens Kietaibl ◽  
Robin Ristl ◽  
...  
Keyword(s):  
Blood Flow ◽  
Carotid Artery ◽  
Heart Surgery ◽  
Open Heart Surgery ◽  
Open Heart ◽  
Artery Blood Flow ◽  
Blood Flow Velocities ◽  
Flow Velocities

A104 MILRINONE INCREASES MIDDLE CEREBRAL ARTERY BLOOD FLOW VELOCITY AFTER CARDIOPULMONARY BYPASS

1997 ◽  
Vol 87 (Supplement) ◽  
pp. 104A
Author(s):  
C.A. Sulek ◽  
E.B. Lobato ◽  
L.K. Davies ◽  
M.E. Mahla ◽  
D.J. O'Brien
Keyword(s):  
Blood Flow ◽  
Cardiopulmonary Bypass ◽  
Middle Cerebral Artery ◽  
Flow Velocity ◽  
Cerebral Artery ◽  
Blood Flow Velocity ◽  
Artery Blood Flow

Normal and abnormal trans-oxygenator pressure gradients during cardiopulmonary bypass

Perfusion ◽  
2003 ◽  
Vol 18 (1) ◽  
pp. 25-30 ◽  
Author(s):  
Anthony Richard Fisher ◽  
Mya Baker ◽  
Mike Buffin ◽  
Patrick Campbell ◽  
Stephen Hansbro ◽  
...  
Keyword(s):  
Blood Flow ◽  
Cardiopulmonary Bypass ◽  
Prospective Study ◽  
Pressure Gradient ◽  
Heart Surgery ◽  
Open Heart Surgery ◽  
Normal Pressure ◽  
Pressure Gradients ◽  
Open Heart ◽  
A Prospective Study

A prospective study was conducted with the aims of 1) determining the normal trans-oxygenator pressure gradient characteristics for a range of oxygenators and 2) determining the characteristics, incidence and outcome of abnormally raised gradients. The trans-oxygenator pressure gradient was monitored in 3684 patients undergoing open-heart surgery in eight different hospitals. When the normal pressure gradient was measured during cardiopulmonary bypass in mmHg/L blood flow, a constant figure was obtained which was specific for each oxygenator. This gradient was abnormally raised in 16 cases (one in every 230 cases) and was raised to such an extent in three of these cases that an emergency oxygenator changeout was required (one in every 1228 cases). Among the 16 reported incidents, three different patterns of gradient changes occurred, suggesting the possibility that there were three different aetiologies. In nine of these incidents, the pressure gradient was normal immediately upon going on bypass, but rose rapidly to a plateau value, which then returned to the normal value within 40 minutes. In three cases, the pressure gradient was raised immediately upon going on bypass and then rapidly returned to the baseline. In one case, the pressure gradient was raised immediately upon going on bypass and stayed raised throughout the operation.

Effect of calculated plasma osmolality and atherogenic index of plasma on carotid artery blood flow velocities

Vascular ◽  
2020 ◽  
pp. 170853812096392
Author(s):  
Arda Aybars Pala ◽  
Yusuf Salim Urcun
Keyword(s):  
Blood Flow ◽  
Carotid Artery ◽  
Flow Velocity ◽  
Blood Flow Velocity ◽  
Carotid Artery Stenosis ◽  
Plasma Osmolality ◽  
Artery Stenosis ◽  
Atherogenic Index ◽  
Artery Blood Flow ◽  
Atherogenic Index Of Plasma

Objectives The increase in carotid artery blood flow velocity is a measure of the severity of the carotid artery stenosis caused by atherosclerosis. Carotid artery stenosis is progressive and is of great importance due to the risk of stroke it creates. As an alternative to radiological examinations in these patients, patient follow-up can be facilitated by associating novel laboratory parameters with the severity of stenosis. In this study, we aimed to investigate the effect of the calculated plasma osmolality and atherogenic index of plasma on carotid artery blood flow velocities in patients with carotid artery stenosis. Methods A total of 161 patients diagnosed with carotid artery stenosis who admitted to our clinic between May 2018 and May 2020 were retrospectively analyzed. According to the carotid artery blood flow velocities measured with the Doppler ultrasonography, the patients were divided into two groups as “Normal flow velocity group” ( n = 62) and “Increased flow velocity group” ( n = 99). Results The calculated plasma osmolality, atherogenic index of plasma, and mean platelet volume were significantly associated with increased carotid artery blood flow velocity ( p < 0.001, p < 0.001, p = 0.006; respectively). Calculated plasma osmolality and atherogenic index of plasma were identified as independent predictors of increase in carotid artery blood flow velocity ( p < 0.001, p < 0.001; respectively). In the Receiver Operating Characteristic curve analysis, the plasma osmolality cut-off value, which predicts the increase in carotid artery blood flow velocity was found to be 291.45 mOsm/kg (Area Under the Curve: 0.746, p < 0.001, 65.7% sensitivity, and 67.7% specificity), and atherogenic index of plasma cut-off value was 0.20 (Area Under the Curve: 0.735, p < 0.001, 65.7% sensitivity, and 66.1% specificity). Conclusion There was a significant relationship between the increase in carotid artery blood flow velocity and the increase in plasma osmolality and atherogenic index of plasma values. As a result, we can predict the increase in carotid artery blood flow velocity, that is, the increase in the severity of the carotid artery stenosis, with plasma osmolality and atherogenic index of plasma values that can be calculated simply from routine biochemical tests.

scholarly journals Carotid artery blood flow velocity related to transient ischemic attack and stroke in a population study of 69-year-old men.

Stroke ◽  
1989 ◽  
Vol 20 (10) ◽  
pp. 1327-1330 ◽  
Author(s):  
G Jungquist ◽  
B Nilsson ◽  
H Ostberg ◽  
S O Isacsson ◽  
L Janzon ◽  
...  
Keyword(s):  
Blood Flow ◽  
Carotid Artery ◽  
Flow Velocity ◽  
Population Study ◽  
Transient Ischemic Attack ◽  
Blood Flow Velocity ◽  
Artery Blood Flow ◽  
Ischemic Attack ◽  
Old Men

Carotid artery blood flow and middle cerebral artery blood flow velocity during physical exercise

1996 ◽  
Vol 81 (1) ◽  
pp. 413-418 ◽  
Author(s):  
G. Hellstrom ◽  
W. Fischer-Colbrie ◽  
N. G. Wahlgren ◽  
T. Jogestrand
Keyword(s):  
Blood Flow ◽  
Carotid Artery ◽  
Physical Exercise ◽  
Middle Cerebral Artery ◽  
Flow Velocity ◽  
Exercise Intensity ◽  
Blood Flow Velocity ◽  
Moderate Exercise ◽  
Artery Blood Flow ◽  
Maximal Capacity

Factors controlling cerebral blood flow (CBF) during exercise are complex and incompletely known. Different techniques have shown partly contradictory results of changes in regional and global cerebral perfusion during dynamic exercise in healthy subjects. To elucidate the global CBF response to supine stepwise increasing physical exercise, we measured blood flow in the left common carotid artery (QCCA) and the left internal carotid artery (QICA) simultaneously with the blood flow velocity in the ipsilateral middle cerebral artery (VMCA) using duplex ultrasonography and transcranial Doppler ultrasonography. During moderate exercise intensity (60-67% of maximal capacity), the VMCA increased 14% (P < 0.001), the QICA 17% (P < 0.01), and the QCCA 33% (P < 0.001) compared with baseline values. High physical exercise intensity (80-90% of maximal capacity) tended to reduce VMCA and QICA compared with moderate exercise, in contrast to a continued increase in QCCA. The results indicate an increased global CBF during exercise. This increase was reduced during hard exercise due to a decrease of the arterial PCO2 secondary to hyperventilation.

scholarly journals The Effects of Ventricular Tachycardia on Carotid Artery Blood Flow Velocity

Stroke ◽  
1974 ◽  
Vol 5 (1) ◽  
pp. 60-67 ◽  
Author(s):  
ALBERTO BENCHIMOL ◽  
JOSE BALDI ◽  
KENNETH B. DESSER
Keyword(s):  
Blood Flow ◽  
Ventricular Tachycardia ◽  
Carotid Artery ◽  
Flow Velocity ◽  
Blood Flow Velocity ◽  
Artery Blood Flow
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