OCCURRENCE AND PREVENTION OF POSTASPHYXIAL INTRAVENTRICULAR PRESSURE GRADIENTS
Keyword(s):
Following the earlier demonstration of a systolic pressure gradient across the ventricular outflow tract after exogenous cardiac stimulation, a severe stressor, asphyxia, was produced in rats to determine whether inotropic stimulation of endogenous origin would induce comparable intraventricular systolic pressure gradients. Only during the oxygen rebound phase was a transient ventriculo–aortic pressure gradient demonstrable; it did not appear after treatment with dichloroisoproterenol and was inhibited by bilateral adrenalectomy. It is concluded that the pressure gradient coincided with a marked inotropic stimulation resulting from the release of catecholamines with adrenomedullary participation under adequate oxygenation.
1965 ◽
Vol 209
(3)
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pp. 557-563
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2012 ◽
Vol 6
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pp. CMC.S9789
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2020 ◽
Vol 13
(11)
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1958 ◽
Vol 36
(9)
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pp. 889-893
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2004 ◽
Vol 3
(1)
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pp. 109
1950 ◽
Vol 39
(3)
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pp. 423-429
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