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- Title
Outcome of isolated fetal renal pyelectasis diagnosed during midtrimester screening ultrasound and cut-off value to predict a persistent or progressive pyelectasis in utero.
- Authors
Moon-Kyung Kim; Min-Ji Kim; Jung-Joo An; Hyun-Hwa Cha; Suk-Joo Choi; Soo-Young Oh; Cheong-Rae Roh; Jong-Hwa Kim
- Abstract
Aim: To define a better cut-off value of the renal pelvis anteroposterior diameter (RPAPD) to predict persistent or progressive pyelectasis during pregnancy. Methods: We retrospectively reviewed 8873 women whose fetal RPAPD was measured. Midtrimester pyelectasis was defined as a RPAPD of ≥4 mm. Persistent/progressive pyelectasis was defined as a RPAPD of ≥10 mm before delivery. A RPAPD cut-off value to predict a persistent/progressive pyelectasis was determined by receiver operating characteristic curve analysis. Results: Among 249 isolated cases of pyelectasis, persistent/progressive pyelectasis was found in 6.9% before delivery. The midtrimester RPAPD cut-off value that best predicted persistent/progressive pyelectasis before delivery was ≥6 mm with sensitivity, specificity, positive and negative predictive values of 64.3%, 88.7%, 30.0%, and 97.1%. respectively. Conclusions: Although most cases of midtrimester fetal pyelectasis regress to normal during pregnancy, those with a RPAPD of ≥6 mm in the midtrimester are at higher risk for persistent or progressive pyelectasis.
- Subjects
KOREA; CHI-squared test; FETAL diseases; FISHER exact test; EVALUATION of medical care; PREGNANCY; PRENATAL diagnosis; T-test (Statistics); PREDICTIVE tests; RETROSPECTIVE studies; DESCRIPTIVE statistics
- Publication
Journal of Perinatal Medicine, 2013, Vol 41, Issue 4, p401
- ISSN
0300-5577
- Publication type
Article
- DOI
10.1515/jpm-2012-0214