What symptom does kidney dilate have

summary

Pyeloectasis refers to the fetal kidney abnormalities, the main cause of congenital follicular fetus, part of the kidney may appear from the phenomenon of collection.

What symptom does kidney dilate have

First, when the diameter of renal pelvis dilation is in the range of 4mm-10mm, many cases are not pathological, and may be normal or physiological, but there are also serious urinary obstruction, only mild renal pelvis dilation, such as posterior urethral valve obstruction, can cause obvious bladder dilation and ureteral dilation, while renal pelvis dilation is mild. Therefore, mild pyeloectasis can not be treated as normal or abnormal.

Second: one is that a large amount of drinking water in pregnant women can lead to the expansion of the fetal pelvis, followed by the slight expansion of the renal pelvis caused by the compression of the ureter when the fetal bladder is overfilled. Studies have shown that 70% of the fetus repeated observation within 2 hours, fetal renal pelvis measurement value can be small or large, resulting in "normal" and "abnormal" changes.

Third: hydronephrosis is the most common manifestation of pregnancy, which may be caused by the relaxation of urinary system smooth muscle under the action of progesterone. In this high hormone state, the fetus may also have mild renal pelvis dilatation.

matters needing attention

It is best to do it 5-7 days after delivery, because during this period, the smooth muscle relaxation of the newborn is no longer affected by the maternal progesterone hormone, and its mild renal pelvis dilation has disappeared at this time. However, in the first 48 hours after birth, due to the mild dehydration of the newborn, if renal ultrasound examination is performed immediately after birth, false negative results may appear.