Changes in carotid blood flow and electrocardiogram in humans during and after walking on a treadmill

1993 ◽  
Vol 67 (6) ◽  
pp. 486-491 ◽  
Author(s):  
Jufang He ◽  
Zheng-Lin Jiang ◽  
Hiroyuki Tanaka ◽  
Toshitaka Ikehara ◽  
Akira Takahashi ◽  
...  
Keyword(s):  
Blood Flow ◽  
Carotid Blood Flow

Correlation between Carotid Blood Flow and Brain Atrophy in Patients with Multi-Infarct Dementia

Gerontology ◽  
1989 ◽  
Vol 35 (4) ◽  
pp. 192-197 ◽  
Author(s):  
K. Yamashita ◽  
S. Kobayashi ◽  
S. Yamaguchi ◽  
M. Kitani ◽  
K. Okada ◽  
...  
Keyword(s):  
Blood Flow ◽  
Brain Atrophy ◽  
Carotid Blood Flow

Experiences with surgical thrombosis of intracranial berry aneurysms and carotid cavernous fistulas

1974 ◽  
Vol 41 (6) ◽  
pp. 657-670 ◽  
Author(s):  
Sean Mullan
Keyword(s):  
Blood Flow ◽  
Intracranial Aneurysm ◽  
Carotid Cavernous Fistula ◽  
Content Type ◽  
Cavernous Fistula ◽  
Carotid Blood Flow ◽  
Giant Intracranial Aneurysm ◽  
Surgical Methods ◽  
Carotid Cavernous Fistulas ◽  
Fine Print

✓ The results of 61 cases of stereotaxic thrombosis of intracranial berry aneurysms indicate that the technique in selected cases is comparable to, but not necessarily superior to standard surgical methods. The results of wire-induced thrombosis in 15 cases of giant intracranial aneurysm suggest that this method is effective in situations where clipping and encapsulation are inapplicable. The results of thrombosis in six cases of carotid cavernous fistula suggest that intracavernous wire thrombosis may prove to be the treatment of choice in that it seals the fistula without impairing carotid blood flow.

scholarly journals Carotid Blood Flow During REM Sleep

SLEEP ◽  
2008 ◽  
Vol 31 (5) ◽  
pp. 701-707 ◽  
Author(s):  
Marcella Calasso ◽  
Pier Luigi Parmeggiani
Keyword(s):  
Blood Flow ◽  
Rem Sleep ◽  
Carotid Blood Flow

scholarly journals Effect of chronic cervical ganglionectomy on the spontaneous variability of internal carotid blood flow in the conscious rat

2012 ◽  
Vol 97 (5) ◽  
pp. 564-571 ◽  
Author(s):  
Aurélia Revel ◽  
Clément Gallet ◽  
Valérie Oréa ◽  
Bruno Chapuis ◽  
Christian Barrès ◽  
...  
Keyword(s):  
Blood Flow ◽  
Internal Carotid ◽  
Conscious Rat ◽  
Carotid Blood Flow

scholarly journals Correlation of Carotid Blood Flow and Carotid Flow Time With Invasive Cardiac Output Measurements

CHEST Journal ◽  
2016 ◽  
Vol 150 (4) ◽  
pp. 297A
Author(s):  
Irene Ma ◽  
Joshua Caplin ◽  
Aftab Azad ◽  
Christina Wilson ◽  
Michael Fifer ◽  
...  
Keyword(s):  
Blood Flow ◽  
Cardiac Output ◽  
Flow Time ◽  
Carotid Blood Flow ◽  
Cardiac Output Measurements ◽  
Carotid Flow

Abstract 439: Using the Time Interval Between R-Wave Detection and Maximum Compression Pressure to Target and Validate Delivery of Synchronized Chest Compressions During Pseudo Electro-Mechanical Dissociation

Circulation ◽  
2019 ◽  
Vol 140 (Suppl_2) ◽  
Author(s):  
Joshua W Lampe ◽  
Jeff R Gould ◽  
Karen L Moodie ◽  
Zachary P Soucy ◽  
Peter S Burrage ◽  
...  
Keyword(s):  
Blood Flow ◽  
Time Interval ◽  
Hemodynamic Parameters ◽  
Chest Compressions ◽  
Compression Pressure ◽  
Carotid Blood Flow ◽  
Maximum Compression ◽  
Local Maxima ◽  
Blood Flows ◽  
Mechanical Dissociation

Introduction: The treatment of pseudo electro-mechanical dissociation (P-EMD) with standard chest compressions leads to some compressions that interfere with blood flow created by ventricular contraction and others that are synergistic. We have previously reported that the hemodynamics generated by standard chest compressions (StdCPR) depended on the time interval between the R-wave and the maximum compression pressure (t_int). Our goal was to use the t_int to identify the optimal timing for compression synchronization and to validate the delivery of synchronized chest compressions. Methods: Eight animals underwent surgical preparation and were exposed to hypoxia to induce P-EMD. The treatment period was divided into eight 45 sec epochs during which the P-EMD was left untreated or was treated with StdCPR or chest compressions synchronized to the R-wave in the ECG (SyncCPR). For each heart beat t_int was calculated as t peak AOP - t Rwave , blood pressures were averaged, and blood flows were integrated. 1,598 chest compressions were analyzed. The location of local extrema in hemodynamic parameters as a function of positive t_int values were identified recursively by dividing the range of t_int values into increasing numbers of bins and determining which bin had the highest mean value. Results: Blood flows and pressures exhibited a non-linear dependence on t_int. The maximum CPP occurred at t_int = 90 ±2.3 ms. The maximum aortic pressure occurred at t_int = 70 ±2.3 ms. The minimum right atrial pressure occurred at t_int = 280 ±2.3 ms. The maximum carotid blood flow occurred at t_int = 100 ±2.3 ms. The maximum jugular blood flow occurred at t_int = 400 ±2.3 ms. Unsynchronized chest compressions resulted in a t_int of -21 ± 170 ms. Synchronized chest compressions resulted in a t_int of 119 ± 13 ms. Conclusions: Local maxima and minima during StdCPR were identified in several hemodynamic parameters, but the extrema were not perfectly co-located. It appears that a t_int of 90-100 ms could be optimal. SyncCPR were delivered at 119 ms, which is not far from the local maxima observed for CPP and carotid blood flow.

Perinatal adaptive response of the adrenal and carotid blood flow in sheep fetuses subjected to total cord occlusion

2005 ◽  
Vol 17 (2) ◽  
pp. 101-109 ◽  
Author(s):  
Edgar Hernandez-Andrade ◽  
Lena Hellström-Westas ◽  
Kristina Thorngren-Jerneck ◽  
Tomas Jansson ◽  
Karina Liuba ◽  
...  
Keyword(s):  
Blood Flow ◽  
Adaptive Response ◽  
Carotid Blood Flow

CAROTID BLOOD FLOW DURING PERMISSIVE HYPERCAPNIA IN AN OVINE MODEL

1993 ◽  
Vol 21 (Supplement) ◽  
pp. S190
Author(s):  
Thuan Nguyen ◽  
Charles Cox ◽  
Alex Tzounakis ◽  
Phillip Bush ◽  
Daniel Traber ◽  
...  
Keyword(s):  
Blood Flow ◽  
Permissive Hypercapnia ◽  
Ovine Model ◽  
Carotid Blood Flow
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