What causes pyelectasis in pregnancy?

What causes pyelectasis in pregnancy?

The most common causes of pyelectasis are: Ureteropelvic junction obstruction: A blockage of urine between the kidneys and the ureter. Vesicoureteral reflux: An abnormal flow of urine from the bladder to the kidneys.

How common is pyelectasis in fetus?

Fetal pyelectasis is found in approximately one percent of all pregnancies, which makes it a relatively common finding. It is more often seen in male fetuses than female.

Why is pyelectasis more common in males?

Objective: Several studies have noted an increased prevalence of pyelectasis in male fetuses. It is speculated that pyelectasis represents a normal physiologic variant in males, whereas its presence in females indicates an increased risk of chromosomal abnormalities.

How serious is fetal pyelectasis?

A fetus with severe pyelectasis or hydronephrosis is at increased risk of developing problems such as low amniotic fluid and kidney disease. In addition pyelectasis has a weak association with chromosome abnormalities, in particular Down syndrome .

What percentage of babies with pyelectasis have Down syndrome?

Pyelectasis was observed in 17.4% (four of 23) of Down syndrome fetuses versus only 2% (120 of 5876) of normal controls, a statistically significant difference (P less than .

What is considered mild pyelectasis?

Mild pyelectasis is considered present when the anterior posterior diameter (APD) of the renal pelvis measures at least 4 mm between 16 and 20 weeks’ gestation, 5 mm between 20 and 30 weeks, and 7 mm between 30 and 40 weeks.

Is Mild Pelviectasis serious?

Mild pyelectasis is a common and usually benign finding (see Fig. 33.6). In some cases, however, it may be secondary to vesicoureteral reflux (VUR) or obstruction. Prenatal ultrasound follow-up should be performed to ensure that the dilation does not increase with gestation.

Does pyelectasis go away?

Pyelectasis will resolve spontaneously more than 90 percent of the time. If the blockage is more severe, your baby may need follow-up care and possibly surgery after delivery. If the obstruction is more severe, urine may back-up and collect in the kidneys. This is called hydronephrosis.

What is pyelectasis in prenatal genetics?

Pyelectasis – Prenatal Genetics. Down syndrome is the most common type of chromosome abnormality in liveborn children. It is caused by an extra copy of chromosome #21. Chromosome abnormalities involving a missing or extra chromosome are usually not inherited and are not caused by an exposure during pregnancy.

What is pyelectasis and how is it treated?

Pyelectasis is when a prenatal ultrasound detects extra fluid in unborn babies’ kidneys. The condition often resolves itself before or shortly after birth. Prenatal care for babies with pyelectasis: The Rush Fetal and Neonatal Medicine Center offers prenatal testing and diagnosis for pyelectasis during your pregnancy.

What are the diagnostic criteria for mild pyelectasis?

Mild pyelectasis is considered present when the anterior posterior diameter (APD) of the renal pelvis measures at least 4 mm between 16 and 20 weeks’ gestation, 5 mm between 20 and 30 weeks, and 7 mm between 30 and 40 weeks.