Sepsis Clinical Trial
Official title:
Non-interventional Follow-up Versus Fluid Bolus in RESPONSE to Oliguria in the Optimization Phase of Fluid Therapy in the Critically Ill (the RESPONSE Trial)
Background: After hypotension, oliguria (urine output less than 0.5 mL/kg/h) was the most common trigger to administer fluid bolus in a multinational practice survey in intensive care. The effect of fluid bolus on cardiovascular variables can be very short-lived among patients in shock suggesting that fluid boluses in the optimization phase are unlikely to improve patient-centered outcomes. Moreover, a growing body of evidence suggests a poor renal response to fluid bolus. Objective: To investigate, whether fluid bolus - as a standard of care - improves urine output in oliguric patients compared to a non-interventional follow-up approach without fluid bolus. Design: Investigator-initiated, open, randomized, controlled study Interventions: 1. Intervention group - follow-up without intervention 2. Control group - fluid bolus (500mL of balanced crystalloid over 30 minutes) Randomization: 1:1 stratified according to the site, presence of acute kidney injury, and sepsis Trial size: 130 patients randomized in 2 ICUs
Study hypothesis: The investigators hypothesize that fluid bolus given due to oliguria does not improve urine output in a majority of patients, especially among those with acute kidney injury. Another study hypothesis is that patients receiving fluid bolus will have higher levels of endothelial damage biomarkers. Intervention description: Intervention group -follow-up without intervention; No intervention to increase the urine output within 2 hours will be done. Standard group - Fluid bolus group: Patient will receive 500mL of balanced crystalloid intravenously over 30 minutes. In both groups, if severe hemodynamic instability occurs, a rescue bolus of 500mL over 30 minutes may be given according to the decision of the treating clinician. In both groups, all other ongoing infusions (nutrition and on-going clear fluids) will be held constant during the 2-hour period. Vasoactive medications, sedation, short-acting insulin, and other medications can be modified according the clinical need. No diuretics during the 2-hour study period are allowed. After two hours from randomization, treating clinician can modify the fluid and drug therapy according to the clinical needs of the patient. All administered fluids will be recorded 6 h from randomization. Except for the study intervention period of 2 hours, no attempt to control fluid therapy will be done. During the study period, all other aspects of critical care will follow the ICU's standard operating procedures and clinician's prescription. ;
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