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PEDIATRIC REFLEX
Primitive Reflexes & Normal Age of Response
| Question | Answer |
|---|---|
| Asymmetric Tonic Neck Reflex (ATNR) | Birth to 6 Months |
| ATNR | Turn baby's head to one side and the UE & LE on the face side will Extend while the scalp side UE/LE will flex (fencer position) |
| Symmetrical Tonic Neck Reflex (STNR) | 6 to 8 Months |
| STNR | When head is in Flexion, the UE's will Flex & LE's will Extend; When head is in Extension, the UE's will Extend & LE's will Flex |
| Tonic Labyrinthine Reflex (TLR) | Birth to 6 Months |
| TLR | In Supine, the body & Extremities are in Extension; In Prone they are in Flexion |
| Galant Reflex | 30 weeks of gestation to 2 months |
| Galant Reflex | Stroke along lateral spine, & Trunk will Sidebend toward side of stimulus. |
| Palmar Grasp Reflex | Birth to 4 Months |
| Palmar Grasp Reflex | Pressure in palm will cause Flexion of fingers & strong grip |
| Plantar Grasp Reflex | 28 weeks gestation to 3 months |
| Plantar Grasp Reflex | Pressure to base of toes will cause toe flexion |
| Rooting Reflex | 28 weeks of gestation to 3 months |
| Rooting Reflex | Touching side of cheek will cause head to turn toward the same side as stimulus with mouth open |
| Moro Reflex | 28 weeks of gestation to 5 months |
| Moro | Dropping head into slight Ext suddenly will cuase arms to abduct, then cross into Adduction; may cause baby to cry |
| Startle | 28 weeks of gestation to 5 months |
| Startle Reflex | A loud or sudden noise will cause sudden jerking of entire body or Ext & Abd of UE followed by Add of shoulders |
| Positive Support Reflex | 35 weeks of gestation to 2 months |
| Positive Support Reflex | Placing weighth on balls of feet when upright will cause stiffening of leg & trunk into Ext |
| Walking/Stepping Reflex | 38 weeks of gestation to 2 months |
| Walking/Stepping Reflex | Supported upright position with soles of feet on firm surfacce will cause reciprocal flex/ext of legs as if walking |
| Babinski Reflex | Birth to 1 year |
| Babinski | Stroking along lateral aspect of sole of foot will cause extension of the big toe & fanning of other toes |
| Flexor Withdrawal | Birth to 2 months (some sources say its present throughout life) |
| Flexor Withdrawal | sharp, quick pressure to sole of foot or palm of hand will cause withdrawal from stimulus |
| Crossed extension | Birth to 2 Months |
| Crossed Extension | sharp, quick pressure to sole of foot will cause withdrawal of stimulated LE & Ext of opposite LE |
| Neck Righting on Body (NOB) | Birth to 6 months |
| NOB | Turn head while in supine, & body logrolls toward same side |
| Sucking Reflex | Birth to 6 months |
| Sucking Reflex | Touch lips, tongue or palate & will result in sucking |
| Head Lag | Until 4-5 Months |
| Head Lag | Pull infant to sit from supine & UE's will flex & there will be head lag |
| Parachute (Protective Ext) | Downward begins at 4 Months; Sideward sitting at 6 Months; forward sitting 7 Months; backward sitting 9 months; persist throughout life |
| Parachute | quick displacement of trunk in downward position while held or while sitting forward, sideward, or backward will result in extension of legs downward & ext of arms in sitting position to reach out to catch self |