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Ultrasound in Obstetrics and Gynecology
Gynecology/Oncology Infertility
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Ultrasound in Obstetrics
Early gestation ultrasound First trimester screening Ultrasound guided procedures Cervical length Level II ultrasound Targeted scan Fetal echocardiography Growth scan Doppler sonography
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Early gestation ultrasound
Intra- or extra-uterine pregnancy Prognosis of pregnancy Number of fetuses Dating
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First trimester screening with ultrasound
Screening for Down syndrome: Nuchal translucency Nasal bone Combination with biochemical markers Screening for cardiac defects:
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Level II sonogram Should it be performed routinely?
When should it be performed? Which organs should level II sonogram include?
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Indications for Fetal -Echocardiography
Suspected cardiac anomalies on sonogram Non cardiac fetal anomalies detected Fetal arrhythmia Maternal/Paternal/Siblings with cardiac defects Exposure to teratogens: viral and drugs Diabetes SLE (anti Ro/La) Genetic and chromosomal diseases
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Twin-to-Twin-Transfusion
Doppler Sonography Indications: IUGR Pre-eclampsia Twin-to-Twin-Transfusion Isoimmunization
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Middle cerebral artery
Doppler Sonography Vessels to study: Umbilical artery Middle cerebral artery Inferior vena cava Ductus venosus Umbilical vein
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Doppler Sonography Pathological findings:
Umbilical artery – RDV, AEDV, high S/D MCA – Low S/D or PI, high PV IVC – Increased reversed flow DV – decreased forward and appearance of reverse flow Umbilical vein - pulsations
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