Birth defects .... Obstruction of Urinary tract 2

Birth defects ....  Obstruction of Urinary tract 2




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Birth defects ....  Obstruction of Urinary tract 2
Posted in 2013


If obstruction is unilateral and the contralateral kidney is fine, then there is not a problem
with kidney function.  The reason that one usually wants to try to fix the situation is to
provide the "insurance" of having two functioning kidneys, because one is plenty.  In the
case of a single kidney, that single kidney increases its function in compensation and can
have as much as 90% of the function that two normal kidneys would have.   Usually a single
kidney has 75-80% of the function of two kidneys.  In this circumstance, the child is
absolutely healthy, with normal growth and development.
Posterior urethral valves is a fairly common defect, and it occurs because a fold or two of
extra tissue grow in the urethra and back up urine flow from the bladder and all the way up
the ureters.  This fold is present from early in kidney development, and so it causes the
urine to back up into the kidneys from the time urine is first made, while the kidneys are still
developing.  Renal dysplasia, same as the lesion discussed above that may occur
independently may occur and in fact, usually does occur, as a result.  This means that the
kidneys are inherently defective and so unblocking the urethra may improve kidney function
somewhat, but it doesn't usually cause kidney function to return to normal.   Even if kidney
function comes back to normal or near normal, the problem with the tubules and inability to
concentrate the urine is quite commonly persistent.  As with primary dysplasia, if the
dysplasia is very, very severe and there is little urine production in utero, then lung

maturation may be affected and cause difficulty after birth.



My advise
1....  I advise every couple to follow Healthy habits to avoid such births

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