The Therapeutic Role of Vasopressin on Improving lactate Clearance During and After Vasogenic Shock: Microcirculation, Is It The Black Box?

  • Elchin Barzegar Department of Clinical Pharmacy (Pharmacotherapy), School of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
  • Arezoo Ahmadi Department of Anesthesiology and Critical Care, Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran.
  • Sarah Mousavi Department of Clinical Pharmacy and Pharmacy Practice, School of Pharmacy, Isfahan University of Medical Sciences, Isfahan, Iran.
  • Masoumeh Nouri Department of Clinical Pharmacy (Pharmacotherapy), School of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
  • Mojtaba Mojtahedzadeh Department of Clinical Pharmacy (Pharmacotherapy), School of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
Keywords:
Vasopressin, Septic shock, Lactate clearance

Abstract

Arginine vasopressin as a supplementary vasopressor in septic shock restores vascular tone and mean arterial pressure, meanwhile decreases dose and exposure time to catecholamines. The objective of this study was to evaluate the effect of vasopressin on lactate and lactate clearance as markers of tissue perfusion during septic shock. In this prospective, randomized, controlled trial, 30 patients with septic shock were enrolled in two groups. One group received norepinephrine infusion (titrated to reach the target MAP of ≥65 mm Hg) and the other group in addition to norepinephrine, received vasopressin at a constant rate of 0.03 u/min. Serum lactate levels were assessed at baseline, 24 and 48 hours after randomization. Lactate clearance was estimated for each patient at 24 and 48 hours. Venous lactate was measured in both groups. Despite a tendency toward higher venous lactate at 24 and 48 hours in the norepinephrine group (3.1 vs. 2.5, P=0.67 and 1.7 vs. 1.1, P=0.47), the conflict was not statistically significant among them. While lactate clearance after 24 hours was significantly higher in vasopressin treatment group (46% vs. 20%, respectively; P=0.048), the 48-hour lactate clearance did not differ from statistic viewpoints despite their clinical values (66% vs. 40%, P=0.17). Although lactate levels did not significantly differ between treatment groups, lactate clearance at 24 hours was significantly higher in vasopressin group. This may be the effect of vasopressin effect on microcirculation and tissue hypoperfusion or its catecholamine sparing effect.

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Published
2016-02-01
How to Cite
1.
Barzegar E, Ahmadi A, Mousavi S, Nouri M, Mojtahedzadeh M. The Therapeutic Role of Vasopressin on Improving lactate Clearance During and After Vasogenic Shock: Microcirculation, Is It The Black Box?. Acta Med Iran. 54(1):15-23.
Section
Original Article(s)