JUM
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Ruano, R.
Right arrow Articles by Zugaib, M.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Ruano, R.
Right arrow Articles by Zugaib, M.
© 2007 by the American Institute of Ultrasound in Medicine
J Ultrasound Med 26:309-316 • 0278-4297

Pulmonary Artery Diameters in Healthy Fetuses From 19 to 40 Weeks’ Gestation

Rodrigo Ruano, MD, PhD, Mariane de Fátima Yukie Maeda, MD, Juliana Ikeda Niigaki, MD and Marcelo Zugaib, MD, PhD

Obstetrics Department, Faculty of Medicine, Universidade de São Paulo, São Paulo, Brazil.

Address correspondence to Rodrigo Ruano, MD, PhD, Obstetrics Department, Faculty of Medicine, Universidade de São Paulo, Rua Valentim de Magalhães 100, ap 52, 03184-090 São Paulo-SP, Brazil.

Objective. The purpose of this study was to construct nomograms for diameters of the fetal main pulmonary artery (MPA), right pulmonary artery (RPA), and left pulmonary artery (LPA) according to gestational age (GA) and estimated fetal weight (EFW). Methods. Between May 2005 and February 2006, MPA and branch artery diameters were prospectively estimated with ultrasonography in 220 healthy fetuses from 19 to 40 weeks’ gestation and correlated with GA and EFW. Results. Mean MPA, RPA, and LPA diameters ranged from 2.93, 1.71, and 1.66 mm, respectively, at 19 weeks to 9.23, 5.49, and 5.65 mm at 40 weeks. Linear regression yielded the following formulas for the expected diameters according to GA: MPA = –2.77 + 0.30 x GA; RPA = –1.71 + 0.18 x GA; and LPA = –1.95 + 0.19 x GA. The following formulas were obtained by logarithm distribution for the expected diameters according to EFW: MPA = –1.165 + 0.247 x log of estimated fetal weight (lnFW); RPA = –0.651 + 0.141 x lnFW; and LPA = –0.718 + 0.150 x lnFW. Conclusions. Nomograms of MPA and branch pulmonary artery diameters according to GA and EFW have been described, generating reference values.

Key Words: fetal lung • pulmonary artery diameter • pulmonary hypoplasia

Abbreviations: CDH, congenital diaphragmatic hernia • EFW, estimated fetal weight • GA, gestational age • lnFW, log of estimated fetal weight • LPA, left pulmonary artery • MPA, main pulmonary artery • PA, pulmonary artery • RPA, right pulmonary artery

HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2007 by the American Institute of Ultrasound in Medicine.