Assessing Postvoid Residual to Identify Risk for Urinary Complications Post Stroke

After a stroke, urinary dysfunction and urinary tract infection are estimated to be approximately 20%. Increased postvoid residual (PVR) is a risk factor for urinary dysfunction and urinary tract infections. These complications can negatively impact recovery weeks after the initial hospitalization. Early identification of risks and patient education are important.

This project was initiated for those patients admitted for a diagnosis of stroke on a 55-bed neuroscience unit in an acute care hospital. Patients were scanned after the initial void post stroke. Nurses followed a specific bladder scanning algorithm for subsequent scanning if the PVR volume was greater than 100 mL.

Seventy-eight patients were scanned in the original phase of the project, and 41 (53%) had PVR volumes greater than 100 mL after the initial void/scan. Of those, 22 patients still had a volume of greater than 100 mL after the second void/scan, and 12 had PVR volumes greater than 100 mL after a third scan.

Patients admitted with stroke have demonstrated increased PVR volumes. Portable ultrasound bladder scanning is a safe, noninvasive method to measure residual urinary volumes. The use of a bladder scanning algorithm encourages nurses' autonomy in assessing and identifying patients at a higher risk for urinary complications.

Identifying the risk for urinary complications post stroke can lead to early interventions that can improve recovery. This also allows for specific patient education related to preventative measures to reduce risk of urinary complications. The use of a specific bladder scanning protocol is recommended as standard practice for all patients admitted with stroke.