Fluid Balance in the ICU - Interventions to Minimize Fluids in Patients With Septic Shock

The purpose of the study is to determine if a protocol that assesses patients' daily fluid intake and output can decrease the overall amount of fluid patients receive during the first five days in the ICU. The study will also determine if decreasing overall fluids can decrease adverse events associated with mechanical ventilation, such as ventilator-associated pneumonias.

The protocol will include daily ultrasounds and blood draws to evaluate fluid balance. Ultrasound will be used to measure changes in the diameter of the inferior vena cava with respiration.

Study Overview

• Status: Completed
• Conditions: Septic Shock; Hypotension; Fluid Therapy
• Intervention / Treatment: Device: Ultrasound; Other: Fluid minimization protocol

• Study Type: Interventional
• Enrollment (Actual): 82
• Phase: Not Applicable

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

1. Adult patient with septic shock as the primary cause of hypotension
2. Requiring vasopressors for 12 hours after adequate fluid resuscitation and at the time of enrollment

Exclusion Criteria:

1. Patients with a history of end-stage renal disease requiring outpatient dialysis
2. Patients whose goals of care are consistent with comfort measures only
3. Pregnant patients

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Fluid minimization group; Patients in the fluid minimization arm will have daily fluid intake and output, baseline central venous pressure, mean arterial pressure, central venous oxygen saturation, pulse pressure variation, and inferior vena cava diameters during inspiration and expiration recorded by a dedicated research fellow. Patients who are intubated will also have corrected flow time, stroke volume, cardiac output, and cardiac index recorded via CardioQ. A fluid challenge in the form of a leg raise or infusion of 250 mL of crystalloid over 5 minutes will then be performed and the parameters repeated. The patient will be judged to be fluid responsive or nonresponsive based on the changes in the parameters. Fluid nonresponsive patients will receive the intervention of the fluid minimization protocol by concentrating continuous infusions, discontinuing maintenance fluids, and minimizing carrier fluids. Diuretics and/or ultrafiltration will be utilized to maintain an even to negative fluid balance.	Device: Ultrasound; Other: Fluid minimization protocol; Fluid nonresponsive patients will have continuous infusions concentrated, maintenance fluids discontinued, and carrier fluids minimized. Diuretics and/or ultrafiltration will be utilized to maintain an even to negative fluid balance in patients demonstrating fluid non-responsiveness.
No Intervention: Usual care group; Patients in the usual care arm will have daily fluid intake and output, baseline central venous pressure, mean arterial pressure, central venous oxygen saturation, pulse pressure variation, and inferior vena cava diameters during inspiration and expiration recorded by a dedicated research fellow. Patients who are intubated will also have corrected flow time, stroke volume, cardiac output, and cardiac index recorded via CardioQ.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Cumulative Fluid Administered	Cumulative volume of crystalloid boluses, continuous infusions, and colloid fluids administered in mL by day 3	Day 3
Cumulative Fluid Administered	Cumulative volume of crystalloid boluses, continuous infusions, and colloid fluids administered in mL by day 5	Day 5
Net Fluid Balance	Difference between cumulative volume of all IV fluids administered and all outputs in mL by day 3	Day 3
Net Fluid Balance	Difference between cumulative volume of all IV fluids administered and all outputs in mL by day 5	Day 5

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Ventilator Days	Number of days requiring mechanical ventilation support, including continuous noninvasive positive pressure ventilation	Hospital stay, median of 16 days
Rate of Renal Replacement Therapy	Percentage of patients requiring renal replacement therapy	ICU stay, median of 10 days
Mortality	Percentage of patients who died during their hospitalization	Hospital stay, median of 16 days
Mortality	Percentage of patients who died during their ICU stay	ICU stay, median of 10 days

Collaborators and Investigators

• Sponsor: Washington University School of Medicine

Publications and helpful links

General Publications

• Rivers E, Nguyen B, Havstad S, Ressler J, Muzzin A, Knoblich B, Peterson E, Tomlanovich M; Early Goal-Directed Therapy Collaborative Group. Early goal-directed therapy in the treatment of severe sepsis and septic shock. N Engl J Med. 2001 Nov 8;345(19):1368-77. doi: 10.1056/NEJMoa010307.
• Michard F, Boussat S, Chemla D, Anguel N, Mercat A, Lecarpentier Y, Richard C, Pinsky MR, Teboul JL. Relation between respiratory changes in arterial pulse pressure and fluid responsiveness in septic patients with acute circulatory failure. Am J Respir Crit Care Med. 2000 Jul;162(1):134-8. doi: 10.1164/ajrccm.162.1.9903035.
• Marik PE, Baram M, Vahid B. Does central venous pressure predict fluid responsiveness? A systematic review of the literature and the tale of seven mares. Chest. 2008 Jul;134(1):172-8. doi: 10.1378/chest.07-2331.
• Michard F, Teboul JL. Predicting fluid responsiveness in ICU patients: a critical analysis of the evidence. Chest. 2002 Jun;121(6):2000-8. doi: 10.1378/chest.121.6.2000.
• Dellinger RP, Levy MM, Rhodes A, Annane D, Gerlach H, Opal SM, Sevransky JE, Sprung CL, Douglas IS, Jaeschke R, Osborn TM, Nunnally ME, Townsend SR, Reinhart K, Kleinpell RM, Angus DC, Deutschman CS, Machado FR, Rubenfeld GD, Webb SA, Beale RJ, Vincent JL, Moreno R; Surviving Sepsis Campaign Guidelines Committee including the Pediatric Subgroup. Surviving sepsis campaign: international guidelines for management of severe sepsis and septic shock: 2012. Crit Care Med. 2013 Feb;41(2):580-637. doi: 10.1097/CCM.0b013e31827e83af.
• Angus DC, Linde-Zwirble WT, Lidicker J, Clermont G, Carcillo J, Pinsky MR. Epidemiology of severe sepsis in the United States: analysis of incidence, outcome, and associated costs of care. Crit Care Med. 2001 Jul;29(7):1303-10. doi: 10.1097/00003246-200107000-00002.
• Vincent JL, Sakr Y, Sprung CL, Ranieri VM, Reinhart K, Gerlach H, Moreno R, Carlet J, Le Gall JR, Payen D; Sepsis Occurrence in Acutely Ill Patients Investigators. Sepsis in European intensive care units: results of the SOAP study. Crit Care Med. 2006 Feb;34(2):344-53. doi: 10.1097/01.ccm.0000194725.48928.3a.
• Alsous F, Khamiees M, DeGirolamo A, Amoateng-Adjepong Y, Manthous CA. Negative fluid balance predicts survival in patients with septic shock: a retrospective pilot study. Chest. 2000 Jun;117(6):1749-54. doi: 10.1378/chest.117.6.1749.
• Marik PE, Baram M. Noninvasive hemodynamic monitoring in the intensive care unit. Crit Care Clin. 2007 Jul;23(3):383-400. doi: 10.1016/j.ccc.2007.05.002.
• National Heart, Lung, and Blood Institute Acute Respiratory Distress Syndrome (ARDS) Clinical Trials Network; Wiedemann HP, Wheeler AP, Bernard GR, Thompson BT, Hayden D, deBoisblanc B, Connors AF Jr, Hite RD, Harabin AL. Comparison of two fluid-management strategies in acute lung injury. N Engl J Med. 2006 Jun 15;354(24):2564-75. doi: 10.1056/NEJMoa062200. Epub 2006 May 21.
• Chen C, Kollef MH. Targeted Fluid Minimization Following Initial Resuscitation in Septic Shock: A Pilot Study. Chest. 2015 Dec;148(6):1462-1469. doi: 10.1378/chest.15-1525.

Study record dates

Study Major Dates

• Study Start: January 1, 2014
• Primary Completion (Actual): December 1, 2014
• Study Completion (Actual): January 1, 2015

Study Registration Dates

• First Submitted: June 10, 2015
• First Submitted That Met QC Criteria: June 11, 2015
• First Posted (Estimate): June 16, 2015

Study Record Updates

• Last Update Posted (Actual): March 29, 2018
• Last Update Submitted That Met QC Criteria: February 27, 2018
• Last Verified: February 1, 2018

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Pathologic Processes; Cardiovascular Diseases; Vascular Diseases; Infections; Systemic Inflammatory Response Syndrome; Inflammation; Sepsis; Shock, Septic; Shock; Hypotension
• Other Study ID Numbers: 201310111