Anuria - Urine, I cant piss Doctor
Dear patients Thank you for your most interesting questions and thank you for trusting me to manage you health. Anuria denotes absent urine production. Oliguria (<400mL urine/24h) is more common than anuria. A catheter must be passed to confirm an empty bladder. Causes Urinary retention —prostatic hypertrophy, pelvic mass, drugs, e.g. tricyclic antidepressants, spinal cord lesions. Blocked indwelling urinary catheter. Obstruction of the ureters —tumour, stone, sloughed papillae (bilateral). Intrinsic renal failure —acute glomerulonephritis, acute interstitial nephritis, acute tubular necrosis, rhabdomyolysis. Pre-renal failure —dehydration, septic shock, cardiogenic shock. An urgent ultrasound of the renal tract must be performed and any physical obstruction relieved as quickly as possible, directly (urethral catheter) or indirectly (nephrostomy). Renal function and serum electrolytes must be measured without delay. Further tests as clinically i...