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
1994
Color Doppler flow patterns and flow velocity waveforms of the intraplacental fetal circulation in growth-retarded fetuses
Rotmensch S, Liberati M, Luo J, Kliman H, Gollin Y, Bellati U, Hobbins J, Copel J. Color Doppler flow patterns and flow velocity waveforms of the intraplacental fetal circulation in growth-retarded fetuses. American Journal Of Obstetrics And Gynecology 1994, 171: 1257-1264. PMID: 7977530, DOI: 10.1016/0002-9378(94)90143-0.Peer-Reviewed Original ResearchMeSH KeywordsBlood CirculationBlood Flow VelocityFemaleFetal Growth RetardationFetusHumansPlacentaPregnancyRegional Blood FlowUltrasonography, Doppler, ColorConceptsIntrauterine growth retardationFlow velocity waveformsUmbilical artery flow velocity waveformsColor Doppler flow signalsColor Doppler flow patternsDoppler flow signalsDoppler flow patternsVillous arteriesColor Doppler flowGrowth retardationVelocity waveformsFetal distressDoppler flowAbnormal umbilical artery flow velocity waveformsReversed end-diastolic flowDoppler flow velocity waveformsFlow signalsMedian Apgar scoresEnd-diastolic flowGrowth-retarded fetusesCross-sectional studyPulsed-wave DopplerApgar scoreColor Doppler flow imagesNormal pregnancy
1992
Fetal Cardiovascular Physiology and Therapy
Kleinman C, Copel J. Fetal Cardiovascular Physiology and Therapy. Fetal Diagnosis And Therapy 1992, 7: 147-157. PMID: 1503650, DOI: 10.1159/000263663.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus StatementsConceptsFetal cardiovascular physiologyFetal lamb modelHuman fetal heartSurgical interventionFetal heartLamb modelCardiovascular physiologyFetal cardiovascular malformationsFetal ductus arteriosusFetal cardiovascular systemVentricular filling characteristicsFetal cardiac developmentSystolic reserveVentricular afterloadDuctus arteriosusThird trimesterForamen ovaleNeonatal periodVentricular hypoplasiaFetal lambsShunt flowPrenatal interventionTimely therapyCardiovascular malformationsHuman fetuses
1990
Does the umbilical artery systolic/diastolic ratio reflect flow or acidosis? An umbilical artery Doppler study of fetal sheep
Copel J, Schlafer D, Wentworth R, Belanger K, Kreitzer L, Hobbins J, Nathanielsz P. Does the umbilical artery systolic/diastolic ratio reflect flow or acidosis? An umbilical artery Doppler study of fetal sheep. American Journal Of Obstetrics And Gynecology 1990, 163: 751-756. PMID: 2206067, DOI: 10.1016/0002-9378(90)91062-h.Peer-Reviewed Original ResearchConceptsSystolic/diastolic ratioUmbilical artery systolic/diastolic ratioDiastolic ratioFetal sheepNormal systolic/diastolic ratioUmbilical artery Doppler studiesArterial blood gas levelsBlood gas levelsAcid-base statusArtery embolizationFetal oxygenationPlacental perfusionMaternal anesthesiaPlacental embolizationAcute modelDoppler studiesThird injectionUmbilical flowFourth injectionSubsequent embolizationDays gestationFirst injectionSecond injectionEmbolizationGreater magnitude change