Effect of spinal cord temperature on carotid blood flow in the Pekin duck

1980 ◽  
Vol 385 (3) ◽  
pp. 269-271 ◽  
Author(s):  
C. Bech ◽  
W. Rautenberg ◽  
B. May ◽  
K. Johansen
Keyword(s):  
Spinal Cord ◽  
Blood Flow ◽  
Pekin Duck ◽  
Carotid Blood Flow ◽  
Spinal Cord Temperature

Cardiovascular changes associated with treadmill running in the Pekin duck

1982 ◽  
Vol 97 (1) ◽  
pp. 345-358 ◽  
Author(s):  
C. Bech ◽  
S. Nomoto
Keyword(s):  
Blood Flow ◽  
Oxygen Consumption ◽  
Internal Heat ◽  
Treadmill Running ◽  
Pekin Duck ◽  
Minor Importance ◽  
Evaporative Heat Loss ◽  
Post Exercise ◽  
Carotid Blood Flow ◽  
Exercise Period

Six adult white Pekin ducks were trained to run on a treadmill for 10 min at a speed of 1.43 km h-1. O2 consumption, CO2 production, breathing rate, blood gas tension and pH, sciatic and carotid blood flows and colonic and skin temperatures were measured in the experiments. A 2.6 times increase in oxygen consumption was observed when going from resting on the treadmill to exercise. The increased oxygen delivery was achieved by a 61% increase in cardiac output and a 51% increase in the arterio-venous oxygen content difference. Probably the reported resting oxygen consumption was higher than a true resting level causing the increment in oxygen consumption to be more correctly 3.6 times the resting level. Sciatic and carotid blood flow increased by 3.7 times and 2.3 times, respectively, during exercise. At cessation of exercise, the carotid blood flow decreased very rapidly, while the sciatic blood flow decreased more slowly. An increased web temperature above the exercise level was seen in the post-exercise period. The results suggest that the ducks prefer to use non-evaporative heat loss in the post-exercise period, respiratory evaporative cooling being of minor importance. this strategy may be correlated to the small internal heat load induced by the running (body temperature increased by only 0.3 degrees C.

Regional blood flow in the brain and spinal cord of hypothermic rats

1989 ◽  
Vol 257 (3) ◽  
pp. H785-H790
Author(s):  
T. Sakamoto ◽  
W. W. Monafo
Keyword(s):  
Spinal Cord ◽  
Blood Flow ◽  
Brain Stem ◽  
Regional Blood Flow ◽  
Experimental Conditions ◽  
Pentobarbital Sodium ◽  
Arterial Blood ◽  
Group A ◽  
Group B ◽  
The Brain

[14C]butanol tissue uptake was used to measure simultaneously regional blood flow in three regions of the brain (cerebral and cerebellar hemispheres and brain stem) and in five levels of the spinal cord in 10 normothermic rats (group A) and in 10 rats in which rectal temperature had been lowered to 27.7 +/- 0.3 degrees C by applying ice to the torso (group B). Pentobarbital sodium anesthesia was used. Mean arterial blood pressure varied minimally between groups as did arterial pH, PO2, and PCO2. In group A, regional spinal cord blood flow (rSCBF) varied from 49.7 +/- 1.6 to 62.6 +/- 2.1 ml.min-1.100 g-1; in brain, regional blood flow (rBBF) averaged 74.4 +/- 2.3 ml.min-1.100 g-1 in the whole brain and was highest in the brain stem. rSCBF in group B was elevated in all levels of the cord by 21-34% (P less than 0.05). rBBF, however, was lowered by 21% in the cerebral hemispheres (P less than 0.001) and by 14% in the brain as a whole (P less than 0.05). The changes in calculated vascular resistance tended to be inversely related to blood flow in all tissues. We conclude that rBBF is depressed in acutely hypothermic pentobarbital sodium-anesthetized rats, as has been noted before, but that rSCBF rises under these experimental conditions. The elevation of rSCBF in hypothermic rats confirms our previous observations.

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

The Response of Spinal Cord Blood Flow to High-Dose Barbiturates

Spine ◽  
1982 ◽  
Vol 7 (1) ◽  
pp. 41-45 ◽  
Author(s):  
PATRICK W. HITCHON ◽  
NEAL F. KASSELL ◽  
TODD R. HILL ◽  
MARY K. GERK ◽  
MARTIN D. SOKOLL
Keyword(s):  
Spinal Cord ◽  
Blood Flow ◽  
Cord Blood ◽  
High Dose ◽  
Spinal Cord Blood Flow

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
Sign in / Sign up

Export Citation Format

Share Document