Impact of Initial Fluid Resuscitation Volume on Clinical Outcomes in Patients with Heart Failure and Septic Shock

Overview

Journal J Intensive Med

Specialty Critical Care

Date 2023 Aug 3

PMID 37533810

Authors

Adam L Wiss

Bruce A Doepker

Brittany Hoyte

Logan M Olson

Kathryn A Disney

Eric M McLaughlin

Vincent Esguerra

Jessica L Elefritz

Affiliations

Soon will be listed here.

Abstract

Background: Fluid resuscitation is a key treatment for sepsis, but limited data exists in patients with existing heart failure (HF) and septic shock. The objective of this study was to determine the impact of initial fluid resuscitation volume on outcomes in HF patients with reduced or mildly reduced left ventricular ejection fraction (LVEF) with septic shock.

Methods: This multicenter, retrospective, cohort study included patients with known HF (LVEF ≤50%) presenting with septic shock. Patients were divided into two groups based on the volume of fluid resuscitation in the first 6 h; <30 mL/kg or ≥30 mL/kg. The primary outcome was a composite of in-hospital mortality or renal replacement therapy (RRT) within 7 days. Secondary outcomes included acute kidney injury (AKI), initiation of mechanical ventilation, and length of stay (LOS). All related data were collected and compared between the two groups. A generalized logistic mixed model was used to assess the association between fluid groups and the primary outcome while adjusting for baseline LVEF, Acute Physiology and Chronic Health Evaluation (APACHE) II score, inappropriate empiric antibiotics, and receipt of corticosteroids.

Results: One hundred and fifty-four patients were included (93 patients in <30 mL/kg group and 61 patients in ≥30 mL/kg group). The median weight-based volume in the first 6 h was 17.7 (12.2-23.0) mL/kg in the <30 mL/kg group 40.5 (34.2-53.1) mL/kg in the ≥30 mL/kg group ( <0.01). No statistical difference was detected in the composite of in-hospital mortality or RRT between the <30 mL/kg group compared to the ≥30 mL/kg group (55.9% 45.9%, =0.25), respectively. The <30 mL/kg group had a higher incidence of AKI, mechanical ventilation, and longer hospital LOS.

Conclusions: In patients with known reduced or mildly reduced LVEF presenting with septic shock, no difference was detected for in-hospital mortality or RRT in patients who received ≥30 mL/kg of resuscitation fluid compared to less fluid, although this study was underpowered to detect a difference. Importantly, ≥30 mL/kg fluid did not result in a higher need for mechanical ventilation.

Citing Articles

Sepsis-Associated Acute Kidney Injury: Pathophysiology and Treatment Modalities.

Aguilar M, AlHussen H, Gandhi P, Kaur P, Pothacamuri M, Talikoti M Cureus. 2025; 16(12):e75992.

PMID: 39834999 PMC: 11743060. DOI: 10.7759/cureus.75992.

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