You are working in the neonatal nursery where a two-day-old infant is referred following a breach delivery and appears to limply hang her right upper extremity adducted to her side and her right forearm held in pronation. The baby, a firstborn, weighed 8 pounds at birth, scored 6 on the Apgar test initially, and then 7 five minutes later. Radiographs have ruled out any clavicle or shoulder fracture. What is the MOST likely diagnosis for this infant's condition?
1. Flaccid hemiplegia due to a traumatic brain injury
2. Shoulder Dystocia
3. Thoracic outlet syndrome
4. Spastic hemiplegia due to a traumatic brain injury
The correct answer will be posted in a few days.