Spinal vasomotor reflex and Cushing response

1980 ◽  
Vol 52 (1-2) ◽  
pp. 85-97 ◽  
Author(s):  
A. P�sztor ◽  
E. P�sztor
Keyword(s):  
Cushing Response ◽  
Vasomotor Reflex

Cutaneous vasomotor reflex in spinal cord injury

1992 ◽  
Vol 41 (3) ◽  
pp. 234
Author(s):  
Natsu Odajima ◽  
Tadashi Ichikawa ◽  
Tetsuo Furukawa ◽  
Hiroshi Tsukagoshi
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Cord Injury ◽  
Vasomotor Reflex

Transcranial Doppler and Cortical Microcirculation at Increased Intracranial Pressure and during the Cushing Response

Neurosurgery ◽  
1995 ◽  
Vol 36 (1) ◽  
pp. 147???157
Author(s):  
Karl Ungersb??ck ◽  
Dirk Tenckhoff ◽  
Axel Heimann ◽  
Wolfgang Wagner ◽  
Oliver S. Kempski
Keyword(s):  
Intracranial Pressure ◽  
Transcranial Doppler ◽  
Increased Intracranial Pressure ◽  
Cushing Response

Cerebral blood flow and evoked potentials during Cushing response in sheep

1989 ◽  
Vol 256 (3) ◽  
pp. H779-H788
Author(s):  
R. C. Koehler ◽  
J. E. Backofen ◽  
R. W. McPherson ◽  
M. D. Jones ◽  
M. C. Rogers ◽  
...  
Keyword(s):  
Blood Flow ◽  
Cardiac Output ◽  
Cerebral Blood Flow ◽  
Intracranial Pressure ◽  
Arterial Pressure ◽  
Evoked Potentials ◽  
Aortic Pressure ◽  
Base Line ◽  
Auditory Evoked Responses ◽  
Cushing Response

We determined how alterations in systemic hemodynamics, characteristic of the Cushing response, are related to changes in cerebral blood flow (CBF), cerebral metabolic rate of O2 (CMRO2), and brain electrical conductive function, as assessed by somatosensory-evoked potentials (SEP) and brain stem auditory-evoked responses (BAER). In three groups of eight pentobarbital-anesthetized sheep, intracranial pressure was gradually elevated to within 50, 25, or 0 mmHg of base-line mean arterial pressure and then held constant for 40 min by intraventricular infusion of mock cerebrospinal fluid. Microsphere-determined CBF fell when cerebral perfusion pressure was less than 50 mmHg. CMRO2 fell when CBF fell greater than 30-40%. Mean aortic pressure and cardiac output increased when CBF fell greater than 40%, i.e., at approximately the level at which CMRO2 fell. Furthermore, the magnitude of the increase in arterial pressure and cardiac output correlated with the reduction of CMRO2. SEP latency did not increase unless CBF fell greater than 55-65%, corresponding to a 20-30% reduction of CMRO2. Increased latency of BAER wave V was associated with a fall in midbrain blood flow of greater than 65-70%. Thus increase in SEP and BAER latencies required reductions of flow greater than those required to elicit a systemic response. This demonstrates that there is a range of intracranial pressure over which the increase in arterial pressure preserves sufficient CBF to sustain minimal electrical conductive function. The best predictor of the onset and magnitude of the Cushing response in adult sheep is the decrease in CMRO2.

Cerebral blood flow and evoked potentials during cushing response in sheep

1989 ◽  
Vol 4 (3) ◽  
pp. 232 ◽  
Author(s):  
R.C. Koehler ◽  
J.E. Backofen ◽  
R.W. McPherson
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Evoked Potentials ◽  
Cushing Response

THE EFFECT OF BARBITURATE ANESTHESIA ON THE CUSHING RESPONSE IN FETAL SHEEP

1989 ◽  
Vol 71 (Supplement) ◽  
pp. A912
Author(s):  
A P Harris ◽  
R C Koehler ◽  
M D Jones ◽  
R J Traystman
Keyword(s):  
Fetal Sheep ◽  
Cushing Response
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