How to determine the thin urinary line and stricture after surgery? 1.Does it take effort to urinate, is there any intermittent phenomenon, is there any defecation and urethral dilatation phenomenon. 2, look at the thickness of the urethra at the time, slightly thinner than the urethra at the time is normal. 3, No. 6 tube swab stick or so, No. 8 tube thicker than this. 4.The urine line is maintained at this level for several weeks without continuous thinning. The thickness of the urine line is an external manifestation and a key point that parents should observe. Generally, outside of the regular follow-up time, the thinning of the urine line should be found in time for a follow-up examination at the hospital to preventatively dilate the urethra to avoid strictures. The effort of urination is a side measure of the condition of the urine line, but it is important to exclude cases where the child deliberately strains to urinate on his own. A urine line that remains in a state for a few weeks and does not strain to urinate is considered stable. Even if it is not very thick, there is no need to worry too much. As your child grows, the urethra will also grow and become thicker, and many urination problems can be improved.