Author ORCID Identifier

Date Available


Year of Publication


Degree Name

Master of Science (MS)

Document Type

Master's Thesis


Public Health


Clinical Research Design

First Advisor

Dr. David Mannino


To see if aggressive diuresis in first twenty four hours is associated with a comparable number of total days in the hospital as compared to non-aggressive diuresis. In this retrospective cohort study, we compared the length of hospital stay of consecutive patients admitted in one year based on their diuresis during the first twenty-four hours of hospitalization: aggressive diuresis (group 1) i.e. > 2400mL versus non-aggressive diuresis (group 2) i.e. ≤ 2400mL urine output. Patients were excluded if in cardiogenic shock, had creatinine level above 3 mg/dL on admission, or on dialysis. A total of 194 patients were enrolled (29 in group 1 and 165 in group 2 respectively). The Kaplan-Meier estimate of the median cumulative proportion of patients still hospitalized for the group 1 was 4 days and in group 2 was 5 days (log-rank test; P=0.67). In univariate analysis, Cox PH regression showed unadjusted hazard rate of discharge from hospital was slightly higher in group 1 than group 2 but was statistically non-significant (HR=1.08; P=0.70). In multivariate Cox model analysis, creatinine at the time of admission when greater than 1.6mg/dL (P=0.75), LVEF (P= 0.14), total twenty-four hours dose of intravenous Furosemide given (P=0.98) and interaction between Furosemide dose and Creatinine level (P=0.79) were not significant predictor of hospital discharge. Adjusted hazard rate for discharge from hospital was 12% higher in group 1 than group 2 but still statistically non-significant (HR=1.12; P=0.60). Since the length of hospital stay is similar between two groups, we suggest the goal of diuresis to be less than 2400mL in first twenty-four hours to prevent excessive dehydration.

Digital Object Identifier (DOI)