Urinary tract obstruction, these symptoms are very harmful

Urinary tract obstruction will affect the discharge of urine and cause lower abdominal distension. Common causes of urinary tract obstruction include urethral diseases, such as urethral stenosis, prostatic hypertrophy, urethral foreign bodies, bladder diseases, and kidney diseases, which require timely diagnosis and treatment.

1. Symptoms and Signs

When patients with acute urinary retention seek medical treatment in the emergency department, their expressions are extremely painful. The medical history can indicate the cause of the disease. Physical examination shows that the lower abdomen is distended and percussion is muddy. Sometimes the bladder base can reach the umbilical plane. Check the penis, urethral opening and urethra for hard cord-like urethral scar tissue to exclude urethral stenosis. Rectal digital examination can feel the size of the prostate. The normal prostate is shaped like a millet, with the base on top and the tip pointing downward. The horizontal diameter of the base is about The prostate is 4cm long, 3cm long, 2cm long and 2cm long. A depression can be felt between the two lobes, which is the so-called central groove. When the prostate is enlarged, not only the gland enlarges, but the central groove also becomes shallow. In acute urinary retention, due to the influence of the full bladder, the prostate is often felt to be larger than its actual size. After trying to empty the bladder, the prostate should be checked again to check whether it is really enlarged to avoid misdiagnosis.

2. Pathological Causes

Various diseases of the urinary system and lesions of other organs adjacent to the urinary tract can cause obstruction at different parts of the urinary tract.

(1) Urethral lesions: urethral stenosis, urethral stenosis, posterior urethral valve, prostatic hypertrophy or prostate cancer, urethral injury, urethral foreign body, urethral stones, etc.

(2) Bladder diseases: Neurogenic bladder - nerve damage caused by congenital meningocele, acquired trauma, drug effects, bladder stones, bladder neck tumors, ureterocele, blood clot obstruction in the bladder, bladder neck contraction, etc.

(3) Ureteral lesions: ureteral stones, tumors, trauma, accidental ligation during surgery, extensive retroperitoneal fibrous lesions, etc.

(4) Kidney diseases: kidney stones, renal pelvic tumors, blood clot obstruction caused by tumor bleeding, congenital stenosis of the ureteropelvic junction, etc.

(5) Obstruction of the urinary tract caused by lesions other than the urinary system: such as compression of the ureter by retroperitoneal or pelvic masses, or infiltration of cervical cancer into the posterior wall of the bladder, resulting in unilateral or bilateral obstruction of the ureter entering the bladder.