NEONATAL REFLEXES

POWERPOINT

1. NEONATAL REFLEXES BY: Mariyam Berak

2. Contents DEFINATION TYPES OF REFLEXES GENERAL BODY REFLEXES FACIAL REFLEXES ORAL REFLEXES

3. Neonatal and infantile reflexes These are primitive reflexes , are peculiar to infants, and disappear with maturation of nervous system. A normally developing newborn should respond to certain stimuli with these reflexes, which eventually become inhibited during 3 to 12 months of postnatal life.

4. GENERAL BODY REFLEXES MORO REFLEX PALMER/GRASP REFLEX BABINSKI’S REFLEX

5. MORO’S REFLEX Any sudden movements of the neck initiate the reflex. Elicited by : Pulling the baby half way to a siting position from the supine and suddenly let the head fall back to a short distance. Consists of rapid abduction and extension of arms with the opening of hands.The arms then come together as in embrace.

6. palmer/grasp reflex When the baby’s palm is stimulated the hand closes. There is also a corresponding planter reflex. Both normally disappear by 24 months.

7. Babinski’s reflex Stroking of the lateral surface of the planter surface of the foot from the heel to toe results in upward movement of big toe and other toe’s fan out.

8. Facial reflexes BLINK REFLEX DOLL’S EYE REFLEX CORNEAL REFLEX

9. BLINK REFLEX Various stimuli provoke blinking. whether the child is awake or sleep, pupils of the eye react to changes in intensity of light.

10. Doll’s eye reflex Infants hold fixation of faces, movements of changing intensity of light with in their visual fields. During the first week they are able to maintain these fixations against passive movements of their bodies.

11. Corneal reflex Blinking when the cornea is touched. Demonstration of these reflexes show that the stimuli of touch, sound and light has been perceived and cerebral depression is unlikely.

12. ORAL REFLEXES Rooting Reflex Sucking Reflex Gag Reflex

13. When then infants cheek contacts the mother’s breast, the baby’s mouth results in vigorous sucking movements resulting in the baby rooting for milk. Onset ; 28 weeks IU. Well stablished; 32-34 weeks IU. Disappears 3-4 months. Rooting reflex

14. Sucking REflex Onset - 28 weeks IU. Well- stablished 32-34 weeks IU. Disappear around ; 12 months. Elicited by; introducing finger in the mouth.

15. Gag reflex Seen at 18 and half weeks of IU life. In buccal cavity and pharynx, the ectoderm/endoderm zone is towards the post. 3rd of tongue. Touching here elicits a gag reflex, a protective reflex.