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- W2068973347 abstract "Objective To determine if lactic acidosis occurring after cardiopulmonary bypass could be attributed to the metabolic or other effects of epinephrine administration. Design Prospective, randomized study. Setting Postsurgical cardiothoracic intensive therapy unit. Patients Thirty-six adult patients, without acidosis, requiring vasoconstrictors for the management of hypotension after cardiopulmonary bypass. Interventions Randomized administration of either epinephrine or norepinephrine by infusion. Measurements and Main Results Hemodynamic and metabolic data were collected before commencement of vasoconstrictor therapy (time 0) and then 1 hr (time 1), 6 to 10 hrs (time 2), and 22 to 30 hrs (time 3) later. Six of the 19 patients who received epinephrine developed lactic acidosis. None of the 17 patients receiving norepinephrine developed lactic acidosis. In the epinephrine group, but not in the norepinephrine group, lactate concentration increased significantly at times 1 and 2 (p = .01), while pH and base excess decreased (p <or=to .01). Blood glucose concentration was higher in the epinephrine group at time 2 (p = .02), while the cardiac index (p < .03) and the mixed venous PO2 (p = .04) were higher at time 1. Compared with the norepinephrine group, the patients receiving epinephrine had higher femoral venous lactate concentrations (p = .03), increased lower limb blood flow (p = .05), and increased femoral venous oxygen saturations (p = .04). Conclusions The use of epinephrine after cardiopulmonary bypass precipitates the development of lactic acidosis in some patients. This phenomenon is presumably a beta-mediated effect, and is associated with an increase in whole-body and lower limb blood flow and a decrease in whole-body and transfemoral oxygen extraction. The phenomenon does not appear to be related to reduced tissue perfusion and does not have the poor outlook of lactic acidosis associated with shock. (Crit Care Med 1997; 25:1693-1699)" @default.
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- W2068973347 date "1997-10-01" @default.
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- W2068973347 title "Epinephrine-induced lactic acidosis following cardiopulmonary bypass" @default.
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- W2068973347 doi "https://doi.org/10.1097/00003246-199710000-00019" @default.
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