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A post-void residual urine greater than 50 ml is a significant amount of urine and increases the potential for recurring urinary tract infections. [citation needed] In adults older than 60 years, 50-100 ml of residual urine may remain after each voiding because of the decreased contractility of the detrusor muscle. [7]
Post-void residual volume: Most tests begin with the insertion of a urinary catheter/transducer following complete bladder emptying by the patient. The urine volume is measured (this shows how efficiently the bladder empties). High volumes (180 ml) may be associated with urinary tract infections. [5]
Measurement of post-void residual by medical ultrasound is an easy procedure that is sufficient in most cases. Patients with this condition presenting additionally with hydronephrosis, stage 3 chronic kidney disease, or recurrent urinary tract infection or urosepsis were considered as high risk groups.
Without diagnostic evaluation, the cause of underactive bladder is unclear, as there are multiple possible causes. UAB symptoms can accurately reflect impaired bladder emptying due either to DU or obstruction (normal or large storage volumes, elevated post-void residual volume), or can result from a sense of incomplete emptying of a hypersensitive bladder (small storage volumes, normal or ...
A 2014 meta-analysis found that, for elderly males with LUTS, sitting to urinate meant there was a decrease in post-void residual volume (PVR, ml), increased maximum urinary flow (Qmax, ml/s), which is comparable with pharmacological intervention, and decreased the voiding time (VT, s). [19]
decreased the post-void residual volume; increased the maximum urinary flow, comparable with pharmacological intervention; and; decreased the voiding time. This urodynamic profile is associated with a lower risk of urologic complications, such as cystitis and bladder stones.
Post-void dribbling, also known as post-micturition dribbling, occurs when urine remaining in the urethra after voiding the bladder slowly leaks out after urination. A common and usually benign complaint, it may be a symptom of urethral diverticulum , prostatitis and other medical problems.
Most lab results such as urine analysis, cystometry and post-void residual volume are normal. Some sources distinguish between urethral hypermobility and intrinsic sphincter deficiency. The latter is more rare, and requires different surgical approaches. [1]