Decreased urine output may be a physiological phenomenon, or it may be a symptom of certain diseases, such as nephrotic syndrome, hepatorenal syndrome, etc., and you should consult a doctor in time to find out the cause.
1. Physiological: Normal adult 24-hour urine output is about 1L~2L, such as water loss from the surface of the body when sweating heavily, and water loss from the digestive tract when having diarrhea.
2.Pathologic:
(1) Pre-renal: such as shock, nephrotic syndrome, hepatorenal syndrome severe water loss, hemorrhage, caused by reduced renal blood flow; cardiac insufficiency, severe arrhythmia, etc. caused by a drop in blood pressure due to reduced renal blood flow; renal vascular stenosis or inflammation, renal artery embolism or thrombosis; hypertensive crisis caused by renal ischemia leading to acute renal failure.
(2) Renal: severe acute nephritis, acute progressive nephritis and other causes of sustained increase in blood pressure or nephrotoxic drugs to damage renal function; drug, infectious interstitial nephritis; chemical poisons, biotoxicity, heavy metals leading to acute renal tubular necrosis; severe renal meningoarthritis complicated by renal papillary necrosis.
(3) Post-renal: mechanical urinary tract obstruction such as stones, blood clots blocking the ureter; tumors, prostate hypertrophy compression of the urinary tract.
In addition, scar contracture after healing of ureteral surgery, renal torsion, neurogenic bladder and so on can also cause decreased urine output. If physiological causes are ruled out, you should consult a doctor to clarify the cause of the disease and treat accordingly if necessary.