NCT02565420.

Trial name or title	Saline versus lactated Ringer's solution: the SOLAR fluid trial
Methods	Randomized controlled trial of lactated Ringer's solution vs normal saline for intraoperative fluid management
Participants	Estimated enrolment: 8548 participants
Interventions	Active comparator: lactated Ringer's solution During perioperative period of colorectal, orthopaedic, or similar surgery, participant will receive an intervention of lactated Ringer's solution fluids Placebo comparator: normal saline During perioperative period of colorectal, orthopaedic, or similar surgery, participant will receive an intervention of normal saline solution
Outcomes	Primary: major postoperative complications Secondary: economic evaluation
Starting date	September 2015
Contact information	Roberta Johnson, 216‐444‐9950; johnsor13@ccf.org
Notes	ClinicalTrials.gov identifier: NCT02565420