When evaluating the reflexes of a newborn, the nurse notes that with a loud noise the newborn symmetrically abducts and extends his arms, the fingers fan out and form a "C" with the thumb and forefinger, and he has a slight tremor
The nurse would document this finding as a positive: 1. tonic neck reflex.
2. glabellar (Myerson) reflex.
3. Babinski reflex.
4. Moro reflex.
4
1. Incorrect. The tonic neck reflex occurs when the infant extends the leg of the side that the infant's head is simultaneously turned to.
2. Incorrect. The glabellar reflex is elicited by tapping on the infant's head while the eyes are open. A characteristic response is that the newborn will blink for the first few taps.
3. Incorrect. The Babinski reflex occurs when the sole of the foot is stroked upward along the lateral aspect of the sole then across the ball of the foot. A positive response is when all the toes hyperextend with dorsiflexion of the big toe.
4. Correct. The characteristics displayed by the infant are associated with a positive Moro reflex.
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