A 3-Hour-Old Girl Is Evaluated in the Neonatal Intensive Care

question 626

Multiple Choice

A 3-hour-old girl is evaluated in the neonatal intensive care unit for cyanosis.  She was born at 38 weeks gestation by cesarean delivery for nonreassuring fetal heart tones.  The mother is a 28-year-old primigravida who had an uncomplicated pregnancy.  Apgar scores were 8 at both 1 and 5 minutes.  The infant was initially rooming-in with her mother but was moved to the nursery shortly after delivery due to a dusky appearance.  Pulse oximetry of the right hand and leg shows 72% on room air.  The patient remains hypoxic after 10 minutes of breathing 100% oxygen delivered by hood.  On examination, she is cyanotic and tremulous.  She has low-set ears, micrognathia, and a cleft palate.  Chest x-ray reveals an absent thymus.  Echocardiography shows truncus arteriosus.  Given the presumed diagnosis, this patient most likely has which of the following conditions?

• A)Anemia
• B)Duodenal atresia
• C)Horseshoe kidney
• D)Hypocalcemia
• E)Hypoglycemia
• F)Myelomeningocele
• G)Neutropenia

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Definitions:

Magnetized

The state of being magnetically charged, having a magnetic field induced or naturally occurring.

Easily Magnetized

Refers to materials that can quickly become magnetized when exposed to a magnetic field and retain the magnetization for a period.

Metals

Elements that typically have a shiny surface and can conduct electricity and heat efficiently.

Electromagnet

A type of magnet in which the magnetic field is produced by an electric current, which can be turned on or off.