2001
Changes in fetal hemodynamics with ritodrine tocolysis
Gokay Z, Ozcan T, Copel J. Changes in fetal hemodynamics with ritodrine tocolysis. Ultrasound In Obstetrics And Gynecology 2001, 18: 44-46. PMID: 11489225, DOI: 10.1046/j.1469-0705.2001.00453.x.Peer-Reviewed Original ResearchConceptsMiddle cerebral arteryTime-velocity integralFetal heart ratePulsatility indexHeart rateRitodrine infusionCerebral arteryUmbilical arteryVelocity integralEffects of ritodrineLeft cardiac outputDoppler pulsatility indexCerebral blood flowFetal cardiovascular systemRitodrine therapyPreterm laborDuctus arteriosusFetal hemodynamicsRenal arteryRitodrine tocolysisCardiac outputThoracic aortaDoppler waveformsAtrioventricular valveBlood flow
1996
Is the fetal brain‐sparing effect a risk factor for the development of intraventricular hemorrhage in the preterm infant?
Mari G, Abuhamad A, Keller M, Verpairojkit B, Ment L, Copel J. Is the fetal brain‐sparing effect a risk factor for the development of intraventricular hemorrhage in the preterm infant? Ultrasound In Obstetrics And Gynecology 1996, 8: 329-332. PMID: 8978007, DOI: 10.1046/j.1469-0705.1996.08050329.x.Peer-Reviewed Original ResearchConceptsMiddle cerebral artery pulsatility indexCerebral artery pulsatility indexBrain-sparing effectArtery pulsatility indexIntrauterine growth restrictionIntraventricular hemorrhagePulsatility indexPreterm laborAntenatal exposureGestational ageMean birth weightNeonatal intraventricular hemorrhageRespiratory distress syndromeMiddle cerebral arteryFirst postnatal weekApgar scoreCesarean sectionNecrotizing enterocolitisPreterm infantsBrain sparingDistress syndromeWeeks' gestationCerebral arteryIUGR fetusesDoppler studiesAdrenal artery velocity waveforms in the appropriate and small‐for‐gestational‐age fetus
Mari G, Uerpairojkit B, Abuhamad A, Copel J. Adrenal artery velocity waveforms in the appropriate and small‐for‐gestational‐age fetus. Ultrasound In Obstetrics And Gynecology 1996, 8: 82-86. PMID: 8883308, DOI: 10.1046/j.1469-0705.1996.08020082.x.Peer-Reviewed Original ResearchConceptsGestational age fetusesArtery pulsatility indexFlow velocity waveformsPulsatility indexVelocity waveformsAdrenal arteryFetal heart rate decelerationsHeart rate decelerationsPreterm deliveryCesarean sectionGestational ageDoppler ultrasonographyAdrenal glandBlood flowHigh incidenceNormal fetusesFetusesRate decelerationConfidence intervalsSuccess rateArteryUltrasonographyGestationIncidence
1995
Blood flow velocity waveforms of the abdominal arteries in appropriate‐ and small‐for‐gestational‐age fetuses
Mari G, Abuhamad A, Uerpairojkit B, Martinez E, Copel J. Blood flow velocity waveforms of the abdominal arteries in appropriate‐ and small‐for‐gestational‐age fetuses. Ultrasound In Obstetrics And Gynecology 1995, 6: 15-18. PMID: 8528795, DOI: 10.1046/j.1469-0705.1995.06010015.x.Peer-Reviewed Original ResearchConceptsGestational age fetusesPulsatility index valuesSuperior mesenteric arteryFlow velocity waveformsPulsatility indexSplenic arteryHepatic arteryMesenteric arteryRenal arteryVelocity waveformsAbdominal arteriesLower pulsatility index valuesSuperior mesenteric artery levelColor flow Doppler ultrasonographyBlood flow velocity waveformsHigher pulsatility indexLow pulsatility indexLow vascular resistanceSuccessful insonationArtery levelVascular resistanceDoppler ultrasonographyArterial waveformBlood flowNormal fetuses
1991
Can umbilical artery pulsatility index predict the outcome of fetuses with structural heart disease?
Copel J, Hobbins J, Kleinman C. Can umbilical artery pulsatility index predict the outcome of fetuses with structural heart disease? Journal Of Ultrasound In Medicine 1991, 10: 323-326. PMID: 1895374, DOI: 10.7863/jum.1991.10.6.323.Peer-Reviewed Original ResearchConceptsCongenital heart diseaseElevated pulsatility indexPulsatility indexHeart diseaseUmbilical artery PI valuesUmbilical artery pulsatility indexUmbilical artery Doppler waveformsNormal PI valuesArtery pulsatility indexOutcome of fetusesStructural heart diseaseEnd-diastolic velocityWeeks' gestationFatal anomalyCHD fetusesAnomalous fetusesDoppler waveformsFatal diseaseFetusesNormal populationDiseasePI valuesGestationNormal chromosomesLesions