2010
Acceleration/ejection time ratio in the fetal pulmonary artery predicts fetal lung maturity
Azpurua H, Norwitz ER, Campbell KH, Funai EF, Pettker CM, Kleine M, Bahtiyar MO, Malkus H, Copel JA, Thung SF. Acceleration/ejection time ratio in the fetal pulmonary artery predicts fetal lung maturity. American Journal Of Obstetrics And Gynecology 2010, 203: 40.e1-40.e8. PMID: 20417479, DOI: 10.1016/j.ajog.2010.01.075.Peer-Reviewed Original ResearchConceptsAcceleration time/ejection time ratioEjection time ratioFetal lung maturityLecithin/sphingomyelin ratioFetal pulmonary arteryLung maturitySphingomyelin ratioPulmonary arteryAcceleration/ejection time ratioPulmonary artery blood flowSystolic/diastolic ratioYale-New Haven HospitalAmniotic fluid biomarkersAmniotic fluid lecithin/sphingomyelin ratioArtery blood flowFlow velocity waveformsFlow velocity parametersNew noninvasive techniqueSingleton pregnanciesDiastolic ratioPulsatility indexUltrasound evaluationFluid biomarkersPotential confoundersStudy criteria
2009
Fetal renal artery impedance as assessed by Doppler ultrasound in pregnancies complicated by intraamniotic inflammation and preterm birth
Azpurua H, Dulay AT, Buhimschi IA, Bahtiyar MO, Funai E, Abdel-Razeq SS, Luo G, Bhandari V, Copel JA, Buhimschi CS. Fetal renal artery impedance as assessed by Doppler ultrasound in pregnancies complicated by intraamniotic inflammation and preterm birth. American Journal Of Obstetrics And Gynecology 2009, 200: 203.e1-203.e11. PMID: 19185102, PMCID: PMC3791328, DOI: 10.1016/j.ajog.2008.11.001.Peer-Reviewed Original ResearchConceptsCord blood IL-6End-diastolic blood flowRenal artery pulsatility indexArtery pulsatility indexBlood IL-6Amniotic fluid indexIntraamniotic inflammationResistance indexPulsatility indexPreterm birthIL-6Blood flowSerum blood urea nitrogen levelAF IL-6 levelsInflammation-associated preterm birthRenal artery resistance indexSystolic/diastolic ratioBlood urea nitrogen levelsAge-reference rangeCord blood interleukinRenal vascular bedIL-6 levelsHours of lifeUrea nitrogen levelsBlood interleukin