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Medical AI Inquiry: You was designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.  Labels: OBJECTIVE, METHODS, METHODS, METHODS, METHODS, RESULTS. Meshes: Adult, Aged, Catheterization, Central Venous, Female, Gastric Mucosa, Humans, Hydrogen-Ion Concentration, Infusion Pumps, Infusions, Intravenous, Male, Middle Aged, Neuromuscular Nondepolarizing Agents, Oxygen, Oxygen Consumption, Prospective Studies, Respiration, Artificial, Sepsis, Shock, Septic, Stomach, Vecuronium Bromide.
user
Are oxygen delivery , oxygen consumption , and gastric intramucosal pH improved by a computer-controlled , closed-loop , vecuronium infusion in severe sepsis and septic shock? Context: To investigate the influence of the neuromuscular blocking agent vecuronium on oxygen delivery (DO2), oxygen consumption (VO2), oxygen extraction ratio, and gastric intramucosal pH in heavily sedated patients with severe sepsis or septic shock. Prospective, randomized, placebo-controlled, cross-over trial. University hospital intensive care unit. Eighteen mechanically ventilated patients with severe sepsis or septic shock. All patients were heavily sedated. After baseline measurement, a computer-controlled, closed-loop infusion of either vecuronium or saline was initiated and further measurements were made at 40 and 60 mins. The procedure was repeated with the alternative agent after return of neuromuscular function. DO2, VO2, intramucosal pH were monitored using pulmonary artery catheters, a gas exchange monitor, and gastric tonometers. Changes from baseline were compared (paired t-test, p = .05). The vecuronium closed-loop infusion achieved T1 between 5% and 15% at 40 mins. There was a significant difference in the changes from baseline for static respiratory compliance in the vecuronium closed-loop infusion group compared with the saline closed-loop infusion group. There was no significant difference in the change from baseline for systemic or pulmonary vascular resistance, DO2, VO2, oxygen extraction ratio, or intramucosal pH.
assistant
In these patients, vecuronium infusion achieved the targeted level of paralysis and improved respiratory compliance but did not alter intramucosal pH, VO2, DO2, or oxygen extraction ratios. With deep sedation, neuromuscular blockade in severe sepsis/septic shock does not significantly influence oxygen flux and should be abandoned as a routine method of improving tissue oxygenation in these patients. Final Decision: no