Measuring Bladder Volumes With Ultrasound and Bladder Scanning in the ICU

The purpose of this correlational descriptive study is to compare measured bladder volumes with a bladder scanner (Verathon Prime), 3D ultrasound (Sono-Site II) and straight catheterization in ICU patients with low urine output receiving dialysis and in ICU patients unable to void.

Upon consent of patient or LAR, patient's age, gender and BMI with the assigned study code number will be recorded on enrollment log. Study code number, patient initials and unit will be written on bedside data collection sheet.

Sequence of 4 non-invasive (1-4) measurement will vary from day to day (see below)

1. MD performs bladder ultrasound and records volume on data collection sheet and places in envelope
2. APRN performs bladder scanner and records volume on data collection sheet and places in envelope.
3. APRN performs bladder ultrasound and records volume on data collection sheet and places in envelope
4. Bedside RN performs bladder scanner and records volume on data collection sheet and places in envelope
5. The study team will record the data from the straight catheterization that is performed as part of clinical care.
6. APRN or research nurse will retrieve catheterization urine volume measurement from RN or from chart and record on data collection sheet

Each enrolled patient will have these 4 measurements performed only on one day. Each clinician research team member will record their result on a data collection form with the study number, patient initials, day of week, clinician initials, observation of abdominal fluid, and comment section for any other observations. The clinician research team member will place the completed form for their measurement in an envelope with the study number on the outside while the next clinician is in the room obtaining the next measure.