A trial in which patients having open abdominal surgery are randomized to receive either crystalloids or colloids intraoperatively, guided by esophageal Doppler. The investigators test the primary hypothesis that goal-directed colloid administration during elective abdominal surgery decreases a composite of postoperative complications within 30 days of surgery.
Patients will be given 5-7 ml/kg of crystalloid (lactated Ringer's) in the immediate preoperative period, which will be followed by 4 ml/kg/h crystalloid for maintenance normalized to ideal body weight \[Men: Ideal Body Weight (in kilograms) = 52 kg + 1.9 kg for every 2.5 cm over 150 cm; Women: Ideal Body Weight (in kilograms) = 49 kg + 1.7 kg for every 2.5 cm over 150 cm\]. They will then be randomly assigned to additional volume replacement, guided by esophageal Doppler, to either lactated Ringer's solution of Voluven starch.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Enrollment
1,102
For goal directed volume management we use corrected aortic flow time (FTc) and stroke volume derived from esophageal Doppler as in previous studies. In case of hypovolemia, detected by esophageal Doppler monitoring (CardioQ, Deltex Medical Group PLC, Chichester, UK) according to a previously published algorithm, an additional fluid bolus of 250 ml of LR will be given over a period of 5 minutes.
For goal directed volume management we use corrected aortic flow time (FTc) and stroke volume derived from esophageal Doppler as in previous studies. In case of hypovolemia, detected by esophageal Doppler monitoring (CardioQ, Deltex Medical Group PLC, Chichester, UK) according to a previously published algorithm, an additional fluid bolus of 250 ml of Hydroxyethylstarch 6% 130/0.4 (Voluven®Fresenius-Kabi, Bad Homburg, Germany) will be given over a period of 5 minutes.
Cleveland Clinic Foundation
Cleveland, Ohio, United States
Cleveland Clinic Hillcrest Hospital
Mayfield Heights, Ohio, United States
Medical University of Vienna
Vienna, Austria
Number of Participants With Postoperative Morbidity (Major Complications)
Any of the following major complications: (1) Cardiac (Acute heart failure/Myocardial infarction/Ventricular arrhythmia); (2) pulmonary (embolism/edema/respiratory failure/pneumonia/pleural effusion); (3) gastrointestinal (bowel and surgical anastomosis stricture or anastomotic leak/internal or external fistulas/peritoneal effusions); (4) Renal (requiring dialysis); (5) Infectious (deep or organ space surgical site infection / sepsis); and (6) Coagulation (bleeding).
Time frame: Postoperative 30-days
Number of Participants With Postoperative Morbidity (Minor Complications)
Any of the following minor complications: (1) unplanned ICU admission; (2) unplanned operation; (3) cardiac (ischemia/non-ventricular arrhythmia/hemodynamic disturbances); (4) pulmonary effusion; (5) deep venous thrombosis; (6) gastrointestinal (effusion/gut paralysis); (7) progressive renal insufficiency; (8) infection (superficial/fever/cystitis or urinary tract infection); and (9) transient neurological injury.
Time frame: Postoperative 30-days
Number of Participants With Postoperative Complications, 30-day Readmission, and 30-day Death
A composite of the primary outcome, and readmission and death.
Time frame: Postoperative 30 days
Number of Participants With Postoperative Acute Kidney Injury
Preoperative-to-postoperative change in AKIN stage
Time frame: Hospitalization
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