4 doctors weighed in:
Question about urinary retention --how much is retained and what is problem if it doesn't come out totally?
4 doctors weighed in

Dr. Simon Kimm
Urology
2 doctors agree
In brief: Varies
The amount of urine retained varies and usually depends on the cause, whether the bladder outlet is obstructed or the bladder squeezes poorly.
This can be measured by bladder scan after void. Efficient bladders empty 100%, but in selected cases, 60% emptying can be tolerated. This retained urine can become infected, however, and large volumes can further affect the bladder's ability to expel urine.

In brief: Varies
The amount of urine retained varies and usually depends on the cause, whether the bladder outlet is obstructed or the bladder squeezes poorly.
This can be measured by bladder scan after void. Efficient bladders empty 100%, but in selected cases, 60% emptying can be tolerated. This retained urine can become infected, however, and large volumes can further affect the bladder's ability to expel urine.
Dr. Simon Kimm
Dr. Simon Kimm
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Dr. George Klauber
Pediatrics - Urology
1 doctor agrees
In brief: Scanning ultrasound
Bladder scan ultrasound can tell urine volume retained without needing to be catheterized.
Problems with retained urine include risk of urinary infection, increasing volumes retained as time goes by leading to increasing bladder atony (inability to contract efficiently due to over-stretching of bladder muscle). Development of complete urinary retention & inability to urinate. Consult with urologist.

In brief: Scanning ultrasound
Bladder scan ultrasound can tell urine volume retained without needing to be catheterized.
Problems with retained urine include risk of urinary infection, increasing volumes retained as time goes by leading to increasing bladder atony (inability to contract efficiently due to over-stretching of bladder muscle). Development of complete urinary retention & inability to urinate. Consult with urologist.
Dr. George Klauber
Dr. George Klauber
Thank
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