IVC Collapsibility Index in Patients With Acute Kidney Injury

The investigators hypothesize that different types of AKI (pre-renal, renal, and post-renal)
are associated with different IVC diameters and collapsibility index. The investigators will
include subjects ages 18-89 years with AKI (creatinine of 2mg/100ml or higher for less than
24 hours from baseline creatinine ≤1.2 or with unknown baseline creatinine). Standard of
care treatment will not be different for patients taking part in this study. Participants
will have bedside ultrasounds on days 0, 1, and 3, and baseline and follow-up data will be
collected from medical records.

Inclusion Criteria:

1. Creatinine of 2 mg/100ml or higher for less than 24 hours from Baseline creatinine
≤1.2 or with unknown baseline creatinine

2. Age range: 18-89 years

3. Age range ≥ 18

Exclusion Criteria:

1- Only chronic renal disease will exclude a patient from our study regardless of past
medical history and medications they are taking. (For the purposes of this study, any
patient with creatinine higher than 1.2 mg /100ml for more than 24 hours will be
identified as having chronic renal disease.)