When does post-obstructive diuresis occur?
Post-obstructive diuresis typically occurs after drainage of larger amounts of urine from the bladder, typically 1,500 cc or more.
Why do you get post-obstructive diuresis?
Postobstructive diuresis is a polyuric response initiated by the kidneys after the relief of a substantial bladder outlet obstruction. In severe cases this condition can become pathologic, resulting in dehydration, electrolyte imbalances, and death if not adequately treated.
How is post-obstructive diuresis treated?
Medical treatment of post-obstructive diuresis consists of oral or intravenous fluids adjusted to the findings of clinical examination, diuresis (volume and electrolytes) and close monitoring of patient. Fluid compensation should be tapered off over several days.
How do you replace fluid in post-obstructive diuresis?
Treatment of postobstructive diuresis consists of judicious fluid replacement with 0.45% saline (at a rate slightly less than urine output) and replacement of electrolytes. Urinary tract infections may occur due to urinary stasis.
What are the causes of urine retention?
What causes urinary retention?
- enlarged prostate, or benign prostatic hyperplasia.
- bladder outlet obstruction, such as urethral stricture or scar tissue in the bladder neck.
- pelvic organ prolapse, including cystocele and rectocele.
- urinary tract stones, also called calculi.
- constipation.
How many MLS should you pee a day?
The normal range for 24-hour urine volume is 800 to 2,000 milliliters per day (with a normal fluid intake of about 2 liters per day). The examples above are common measurements for results of these tests. Normal value ranges may vary slightly among different laboratories.
What causes bladder decompression?
The usual cause is bladder outlet obstruction, the aetiology of which may be enlargement of the prostate (benign or malignant), drugs (e.g. anticholinergics, antispasmodics), congenital deformities (e.g. meatal stenosis, posterior urethral valves) or urethral strictures (from trauma or infection).
What stimulates diuresis?
In the kidneys, PGE2 acts as a paracrine hormone to inhibit sodium reabsorption, promotes diuresis, and acts as a vasodilator in the renal vasculature (13).
Why does BPH cause urinary retention?
The prostate is a walnut-shaped gland that sits below the bladder. It surrounds the part of the urethra that extends out of the bottom of the bladder. When the prostate grows bigger, it constricts the urethra so that urine cannot pass through easily, leading to urinary retention.
What is the most common cause of urinary retention?
The most common cause of urinary retention is benign prostatic hyperplasia. Other common causes include prostatitis, cystitis, urethritis, and vulvovaginitis; receiving medications in the anticholinergic and alpha-adrenergic agonist classes; and cortical, spinal, or peripheral nerve lesions.