If renal pathology is suspected in urinary incontinence, which tests should be performed?

• A. Urinalysis and post-void residual
• B. Urinalysis only
• C. Renal ultrasound, creatinine, and BUN
• D. ECG

Answer: (C)

When renal pathology is suspected in urinary incontinence, you want to evaluate both kidney structure and kidney function. Renal ultrasound directly images the kidneys and urinary tract, revealing issues like hydronephrosis, obstruction, stones, or masses that could contribute to incontinence. Checking serum creatinine and BUN assesses how well the kidneys are filtering waste, indicating functional impairment that might underlie the symptoms. Together, these tests give a clear picture of whether the kidneys themselves are involved, guiding appropriate management.

Urinalysis can detect infection, blood, or protein, but it doesn’t assess anatomy or overall kidney function. Post-void residuals focus on bladder emptying, not renal structure or function. An ECG isn’t relevant to evaluating renal issues.