Effects of epinephrine, norepinephrine, or the combination of norepinephrine and dobutamine on gastric mucosa in septic shock

去甲肾上腺素 多巴酚丁胺 医学 肾上腺素 灌注 感染性休克 麻醉 血流动力学 休克(循环) 内科学 败血症 多巴胺
作者
Jacques Duranteau,Philippe Sitbon,Jean–Louis Teboul,Éric Vicaut,Nadia Anguel,Christian Richard,Kamran Samii
出处
期刊:Critical Care Medicine [Ovid Technologies (Wolters Kluwer)]
卷期号:27 (5): 893-900 被引量:171
标识
DOI:10.1097/00003246-199905000-00021
摘要

Objectives To compare in the same patient with septic shock, respective effects of epinephrine, norepinephrine, and the combination of norepinephrine and dobutamine (5 [micro sign]g/kg/min) on systemic hemodynamic parameters and gastric mucosal perfusion using gastric tonometry and laser-Doppler flowmetry techniques. Design Prospective, controlled, randomized, crossover study. Setting University hospital intensive care unit. Patients Twelve patients with septic shock. Interventions Each patient received in a random succession epinephrine, norepinephrine, and norepinephrine plus dobutamine. Dosages of epinephrine and norepinephrine were adjusted to achieve a mean arterial pressure between 70 and 80 mm Hg. A laser-Doppler probe and a tonometer were introduced into the gastric lumen. Measurements and Main Results The increase in gastric mucosal perfusion detected by laser-Doppler flowmetry was higher with epinephrine and the combination of norepinephrine and dobutamine than with norepinephrine alone (p < .05). In addition, the ratio of gastric mucosal perfusion (local oxygen delivery) to systemic oxygen delivery was increased after norepinephrine plus dobutamine as compared with norepinephrine alone and epinephrine (p < .05). Although values of intramucosal pH and gastroarterial PCO2 tended to be higher with norepinephrine plus dobutamine compared with those obtained with norepinephrine and epinephrine, differences were not statistically significant. Conclusions For the same mean arterial pressure in patients with septic shock, our study showed that administration of epinephrine increased gastric mucosal perfusion more than norepinephrine administration alone. Addition of dobutamine (5 [micro sign]g/kg/min) to norepinephrine improved gastric mucosal perfusion. This result could be explained by a vasodilating effect of dobutamine on gastric mucosal microcirculation. (Crit Care Med 1999; 27:893-900)
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