What is the cause of low urine output

There are many reasons for low urine volume. The most common is insufficient water consumption and insufficient effective perfusion of the kidneys. In addition, low urine volume can also be shown in hypoproteinemia, shock period and renal failure. If heart failure is shown, a large amount of water and sodium retention can also be shown. If urine volume is low, a 24-hour urine volume evaluation should be done and the urine volume should be observed for 24 hours. If the urine volume is less than 100 ml, it is anuria, and less than 400 ml is oliguria. At the same time, kidney function, liver function, heart function, etc. should be evaluated to clarify the cause of oliguria.