Hemodynamically stable oliguric patients usually do not respond to fluid challenge

• Author(s): Felice, Vinicius Brenner ; Lisboa, Thiago Costa ; Souza, Lucas Vieira de ; Sell, Luana Canevese ; Friedman, Gilberto
• Date: 2021
• Persistent ID: http://hdl.handle.net/11690/1894
• Origin: Oasisbr
• Subject(s): Oliguria; Fluid therapy; Acute kidney injury; Intensive care units
• Document Type: Journal article
• Language: English

Description

Submitted by DSpace Unilasalle ([e-mail]) on 2021-07-23T17:16:50Z No. of bitstreams: 1 Hemodynamically stable oliguric_RBTI.pdf: 140870 bytes, checksum: aa21d3e4d79526ad73d76cb9e9af3448 (MD5)

Made available in DSpace on 2021-07-23T17:16:50Z (GMT). No. of bitstreams: 1 Hemodynamically stable oliguric_RBTI.pdf: 140870 bytes, checksum: aa21d3e4d79526ad73d76cb9e9af3448 (MD5) Previous issue date: 2020

Objective: To evaluate renal responsiveness in oliguric critically ill patients after a fluid challenge. Methods: We conducted a prospective observational study in one university intensive care unit. Patients with urine output < 0.5mL/kg/h for 3 hours with a mean arterial pressure > 60mmHg received a fluid challenge. We examined renal fluid responsiveness (defined as urine output > 0.5mL/kg/h for 3 hours) after fluid challenge. Results: Forty-two patients (age 67 ± 13 years; APACHE II score 16 ± 6) were evaluated. Patient characteristics were similar between renal responders and renal nonresponders. Thirteen patients (31%) were renal responders. Hemodynamic or perfusion parameters were not different between those who did and those who did not increase urine output before the fluid challenge. The areas under the receiver operating characteristic curves were calculated for mean arterial pressure, heart rate, creatinine, urea, creatinine clearance, urea/creatinine ratio and lactate before the fluid challenge. None of these parameters were sensitive or specific enough to predict reversal of oliguria. Conclusion: After achieving hemodynamic stability, oliguric patients did not increase urine output after a fluid challenge. Systemic hemodynamic, perfusion or renal parameters were weak predictors of urine responsiveness. Our results suggest that volume replacement to correct oliguria in patients without obvious hypovolemia should be done with caution.