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P henylephrine and norepinephrine are commonly used for blood pressure support during general anesthesia. 1 – 3 Phenylephrine exerts its effect on blood pressure via stimulation of α 1 -adrenergic receptors and hence is largely considered a
administered in a randomized order ( https://www.randomizer.org/ ). Baseline data were collected before dobutamine (DOBU baseline ), esmolol (ESMO baseline ), phenylephrine (PHEN baseline ), and high-dose isoflurane (highISO baseline ). Predetermined
findings on plasma biochemical analysis were all within reference limits. A diagnosis of left dorsal displacement of the large colon with nephrosplenic entrapment was made. After IV placement of a catheter in the jugular vein, 30 mg of phenylephrine a
nonsurgical management of NSELC are similar between studies. 6,9 , a In contrast, techniques for rolling horses vary substantially. 3,4,10–14 Phenylephrine is an α 1 -adrenergic receptor agonist that causes peripheral vasoconstriction and splenic
increase arterial blood pressure to within acceptable limits. The purpose of the study reported here was to determine the cardiopulmonary effects of increasing doses of dopamine, dobutamine, epinephrine, and phenylephrine and measure plasma concentrations
CO. 18 Blood pressure can also be increased by administration of α 1 -adrenergic receptor agonists, such as phenylephrine; however, this technique may be less desirable because CO and tissue perfusion may actually decrease. 18 In contrast, for cats
anesthetized dogs in which blood pressure was varied by altering the depth of anesthesia 15 ; however, hypertension was not induced in that study. 15 The use of an OBPM has been assessed in anesthetized foals during hypotension, normotension, and phenylephrine
isoflurane-anesthetized rabbits, administration of dopamine would increase cardiac output and blood pressure in a dose-dependent manner but that administration of phenylephrine would increase blood pressure with no change in cardiac output. The purpose of the
phenylephrine, rolling the horse under general anesthesia with or without IV phenylephrine administration, or a combination of these options. 3–5 Trocarization can also be performed in addition to phenylephrine treatment. 1 Phenylephrine hydrochloride is an α
% phenylephrine resulted in bilateral mydriasis and normal position of the third eyelids well within 20 minutes. This result indicated denervation supersensitivity and localized the lesion to the third-order neuron bilaterally. This supported our hypothesis that
