Medicine an Surgery notes

Apr 24th, 2015
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FETAL GROWTH ABNORMALITIES/POSTTERM PREGNANCYIntrauterine Growth Restriction (IUGR)Definition = most commonly infants born at or below the tenth percentile of weight for their gestational age, but...Technically this is the definition for small for gestational age (SGA)IUGR implies that growth has been "impaired" or "restricted" (see handout)Although the majority of small babies are growth restricted, some are just constitutionally smallBabies born to diabetic moms may be growth restricted but their birth weight may be above the tenth percentile (appropriate for gestational age/AGA)IUGR is an obstetrical term describing a pathologic process, whereas SGA is a neonatal term indicating any newborn that is "small for dates"Etiology (Three main categories, not a single disease entity or condition)Maternal, (inadequate substrate provided to placenta), i.e., inadequate O2, amino acids, glucose Maternal disease Hypertensive diseaseCyanotic heart diseaseHemoglobinopathiesMultifetal pregnancyPlacental (substrate is adequate, but transport to fetus is inadequate), i.e., utero-placental insufficiencyPlacenta previaPlacental infarctionPremature placental separationsPlacental m

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