Causes of Neonatal Brachial Nerve Injury

The primary cause of neonatal brachial nerve injury is traction or compression during delivery. The most common injury is to the upper trunk of the brachial plexus, which may lead to upper limb dysfunction. Early treatment can prevent adhesions and scar formation, promoting nerve recovery.
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Causes of Neonatal Jaundice

Neonatal jaundice usually appears within 2-3 days after birth and reaches its peak between 4-6 days, then gradually diminishes. For full-term infants, jaundice typically subsides within 2 weeks after birth; for premature infants, it may take up to 3 weeks. The severity of jaundice is generally mild, with the baby’s skin color turning pale yellow, and jaundice usually only affects the face and upper body. During the period of jaundice, the baby remains in good overall condition, with normal body temperature, appetite, and normal color of urine and stool, as well as normal growth and development.
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