Urinary retention

Introduction There is a large amount of urine in the bladder that cannot be discharged, which is called urinary retention. There are many reasons for urinary retention, which can be divided into two types: obstructive and non-obstructive. The causes of obstructive urinary retention are benign prostatic hyperplasia, urethral stricture, bladder or urethra stones, tumors, etc., obstruction of the bladder neck or urethra and urinary retention. Non-obstructive urinary retention means that there is no organic disease in the bladder and urethra. Urinary retention is caused by dysfunction of the urinary tract caused by nerve or myogenic factors. Such as brain tumors, brain trauma, spinal cord tumors, spinal cord injury, peripheral neuropathy, and surgery and anesthesia can cause urinary retention.

Cause

There are two reasons for urinary retention:

1 urethral obstruction: urinary retention may be caused by urethral inflammation edema or calculus, urethral stricture, urethral trauma, enlarged prostate or tumor, acute prostatitis or abscess, bladder tumor and other obstruction of the urethra.

2 Neurological factors: Central nervous system diseases caused by various causes and autonomic nerve damage caused by diabetes can cause urinary retention.

an examination

Related inspection

Bladder ultrasound examination of bladder palpation bladder detrusor function test blood PSA examination bladder residual urine volume determination

According to the medical history, the symptoms and signs of bladder fullness, and the urine can not be discharged or can not be completely empty, it can be determined as urinary retention. After the urinary retention was discovered by visual inspection and percussion of the upper part of the pubis, it was further confirmed by B-ultrasound and catheterization. Combined with symptoms, signs, and bladder X-ray examination, B-ultrasound and urethra, cystoscopy, to identify The cause of urinary retention.

Differential diagnosis

1. Urethral stricture, obstruction: urethral inflammation edema or calculus, urethral stricture, trauma, benign prostatic hyperplasia or tumor, acute prostatitis or abscess, bladder tumor and other obstructive urethra.

2. Bladder disease or dysfunction: bladder stones, inflammatory scars, tumors, bladder neck hypertrophy, etc. make the urethral opening narrow or obstructed.

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