Pay attention to sudden decrease in urine volume

The sudden decrease in urine volume should be noted as caused by the following diseases: first, acute renal failure, which will cause a decrease in glomerular filtration rate, resulting in a decrease in urine volume, which requires statistics of 24h urine volume, and renal function tests to confirm the degree of kidney damage; second, postrenal obstruction, prostatic hyperplasia, urethral stones and other diseases will cause urinary tract obstruction, so that urine cannot be discharged normally, retention in the body, will cause a sudden decrease in urine volume. In addition, if the amount of drinking water is small, the amount of exercise is large, and the sweat is more, it will cause a sharp decrease in body fluids and a corresponding decrease in urine volume.