Maternal Physiologic Renal Pelvis Dilatation in Pregnancy: Sonographic Reference Data.

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dc.contributor.author Wadasinghe, Sahan Udayanga en
dc.contributor.author Metcalf, Louisa en
dc.contributor.author Metcalf, Patricia en
dc.contributor.author Perry, David en
dc.date.accessioned 2018-10-09T01:00:01Z en
dc.date.issued 2016-12 en
dc.identifier.issn 0278-4297 en
dc.identifier.uri http://hdl.handle.net/2292/39694 en
dc.description.abstract The purpose of this study was to produce sonographic reference data for maternal renal pelvis dilatation in asymptomatic pregnant women.A prospective cross-sectional study was undertaken on pregnant women presenting for outpatient obstetric imaging. For each side, the renal length and axial anteroposterior diameter of the renal pelvis were measured. Maternal demographics, gravidity and parity, number of fetuses, and estimated fetal weight (when available) were recorded.A total of 700 women enrolled, with 191 excluded. The 509 women analyzed included 465 singleton and 44 twin pregnancies. A total of 815 sonographic investigations were performed: 716 in singleton pregnancies and 99 in twin pregnancies. The gestational age range was 10 to 40 weeks. Charts depicting the anteroposterior renal pelvis diameter versus gestational age were constructed to determine normative sonographic reference data for maternal renal pelvis dilatation in singleton pregnancies. Although the mean renal pelvis diameter increased as pregnancy progressed, measurements of greater than 10 mm remained relatively uncommon, being identified in 9.7% of right and 2.1% of left kidneys in the third trimester. Only 4.1% of right and 0.4% of left third-trimester measurements exceeded 15 mm. Right renal pelvis measurements on average were greater than the left by 1.54 mm (95% confidence interval [CI], 1.20 to 1.87 mm). Twins had significantly larger renal pelvis measurements than singletons on average, measuring 2.11 mm (95% CI, 1.50 to 2.72 mm) larger on the right and 1.69 mm (95% CI, 0.73 to 2.65) on the left.We present sonographic reference data for asymptomatic pregnancy-related renal pelvis dilatation in singleton pregnancies from a large cohort of women. en
dc.format.medium Print-Electronic en
dc.language eng en
dc.relation.ispartofseries Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.subject Kidney Pelvis en
dc.subject Humans en
dc.subject Ultrasonography, Prenatal en
dc.subject Prospective Studies en
dc.subject Cross-Sectional Studies en
dc.subject Pregnancy en
dc.subject Reference Values en
dc.subject Adolescent en
dc.subject Adult en
dc.subject Middle Aged en
dc.subject Female en
dc.subject Young Adult en
dc.title Maternal Physiologic Renal Pelvis Dilatation in Pregnancy: Sonographic Reference Data. en
dc.type Journal Article en
dc.identifier.doi 10.7863/ultra.15.12036 en
pubs.issue 12 en
pubs.begin-page 2659 en
pubs.volume 35 en
dc.rights.holder Copyright: The author en
dc.identifier.pmid 27821653 en
pubs.end-page 2664 en
pubs.publication-status Published en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Journal Article en
pubs.elements-id 545902 en
pubs.org-id Science en
pubs.org-id Statistics en
dc.identifier.eissn 1550-9613 en
pubs.record-created-at-source-date 2016-11-08 en
pubs.dimensions-id 27821653 en


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