Postobstructive Diuresis

Urinary retention is a prevalent urological issue observed in both inpatient and outpatient settings. The diagnosis should be strongly suspected in any patient presenting with lower abdominal discomfort and any degree of urinary symptoms. Retention can be confirmed through assessment of post-void residual volume using bladder ultrasound or catheterization. Postobstructive diuresis (POD) may develop following the acute drainage and decompression of a distended bladder, leading to prolonged polyuria accompanied by excessive loss of salt and water. Pharmacists often identify urinary retention as a common urological concern, particularly in older patients who are more susceptible to the adverse effects of medications. Timely identification of POD is essential, as it can impact up to 50% of patients and potentially progress to a life-threatening condition. Pathologic POD can lead to severe complications, including dehydration, electrolyte imbalances, hypotension, hypovolemic shock, and even death. Treatment typically involves coordinated efforts from an interprofessional healthcare team to deliver urgent care and potential hospitalization until resolution.

Credit & MOC Details

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