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Updated: Jun 16, 2026

Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing
Published on: August 14, 2019
Two screening tests for urinary voiding dysfunction used in 209 consecutive patients undergoing lumbar spine
Jan Roar Orlin1, Bjørn Klevmark, Linda Bjørnsen
1Department of Orthopaedics, Central Hospital (FSS), Førde, Norway. ja-or@online.no
Preoperative screening for bladder dysfunction using uroflowmetry and residual urine measurement is crucial for patients undergoing lumbar spine surgery. A high prevalence of voiding issues was observed, with many patients showing improvement post-operation.
Area of Science:
- Urology
- Neurosurgery
- Diagnostic Medicine
Background:
- Lumbar spine conditions like disc lesions and spinal stenosis can affect bladder function.
- Preoperative assessment of voiding dysfunction is essential for surgical planning and patient outcomes.
Purpose of the Study:
- To determine the prevalence of urinary voiding dysfunction in patients undergoing lumbar spine operations.
- To evaluate the utility of free uroflowmetry and ultrasound measurement of residual urine as non-invasive screening tests.
Main Methods:
- 209 patients undergoing lumbar spine surgery (159 with disc lesions, 50 with spinal stenosis) were assessed preoperatively.
- Non-invasive tests included free uroflowmetry and ultrasound for residual urine measurement.
- Bladder function was classified based on flow rates, curve shape, voided volumes, and residual urine.
Main Results:
- 68.4% of patients exhibited abnormal bladder function preoperatively.
- Abnormalities suggested sensory paresis and/or neurogenic detrusor underactivity.
- Postoperative follow-up in 79 patients showed a 58% improvement in bladder function after 3 months.
Conclusions:
- Routine use of uroflowmetry and residual urine measurement is recommended for patients with lumbar disc lesions and spinal stenosis.
- These tests document preoperative voiding status and allow for postoperative comparison.
- High prevalence of bladder dysfunction underscores the need for these non-invasive urodynamic screening tests.
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