The blood in the urine after 20 days of laser lithotripsy may be caused by epithelial tissue damage during the operation and postoperative infection.
1. Epithelial tissue damage: In general, after laser lithotripsy, the ureteral epithelial cells may be damaged in the process of stone discharge, leading to the symptom of blood in urine.
2. Post-operative infection: after laser kidney stones, not doing a good job of daily care, may lead to bacterial infection, so that the bladder mucosa is irritated, the phenomenon of blood in the urine. Urinary tract infection can be accompanied by frequent urination, urinary urgency, urinary pain and other symptoms.
There are many other reasons why blood in the urine starts more than 20 days after laser lithotripsy for kidney stones, and it is recommended that patients go to the hospital as soon as possible, to clarify the causes and then actively carry out targeted treatment.