Pediatrics Flashcards
(126 cards)
primitive/spinal reflexes
- Flexor withdrawal
- Crossed extension
- Traction
- Moro
- Startle
- Grasp
Flexor withdrawal
Stimulus: noxious stimulus (pinprick) to the sole of the foot. Tested in supine or sitting position.
Response: toes extend, foot DF, entire leg flexes uncontrollably
Onset: 28 weeks gestation
Integrated: 1-2 months
Crossed extension
Stimulus: noxious stimuli to the ball of foot of extremity fixed in extension; tested in supine.
Response: opposite LE flexes, then adducts and extends
Onset: 28 weeks gestation
Integrated: 1-2 months
Traction
Stimulus: grasp forearm and pull up from supine into sitting
Response: grasp and total flexion of the UE
Onset: 28 weeks gestation
Integrated: 2-5 months
Moro
Stimulus: sudden change in position of head in relation to trunk; drop patient backward from sitting position
Response: extension, abduction of UEs, hand opening, and crying followed by flexion, adduction of arms across chest
Onset: 28 weeks gestation
Integrated: 5-6 months
Startle
Stimulus: sudden loud or harsh noise
Response: sudden extension or abduction of arms, crying
Onset: birth
Integrated: persists
Grasp
Stimulus: maintained pressure to palm of hand (palmar grasp) or to ball of foot under toes (plantar grasp)
Response: maintained flexion of fingers or toes
Onset: palmar at birth; plantar at 28 weeks gestation
Integrated: palmar- 4-6 months; plantar- 9 months
tonic/brainstem reflexes
- asymmetrical tonic neck (ATNR)
- symmetrical tonic neck (STNR)
- symmetrical tonic labyrinthe (TLR or STLR)
- positive supporting
- associated reactions
Asymmetrical tonic neck (ATNR)
Stimulus: rotation of the head to one side
Response: flexion of skull limbs, extension of the jaw limbs, “bow and arrow” or “fencing” posture
Onset: birth
Integrated: 4-6 months
Symmetrical tonic neck
Stimulus: flexion or extension of the head
Response: with head flexion: flexion of the arms, and extension of the legs
with head extension: extension of the arms, and flexion of the legs
Onset: 4-6 months
Integrated: 8-12 months
Symmetrical tonic labyrinthine (TLR or STLR)
Stimulus: prone or supine position
Response: with prone position: increased flexor tone/flexion of all limbs
with supine position: increased extensor tone/extension of all limbs
Onset: birth
Integrated: 6 months
Positive supporting
Stimulus: contact to the ball of the foot in upright standing position
Response: rigid extension (co-contraction) of the LEs
Onset: birth
Integrated: 6 months
Associated reactions
Stimulus: resisted voluntary movement in any part of the body
Response: involuntary movement in resting extremity
(homolateral synkinesis and Ramestes)
Onset: birth-3 months
Integrated: 8-9 years
Midbrain/Cortical reflexes
- neck righting action on the body (NOB)
- body righting acting on the body (BOB)
- labyrinthine head righting (LR)
- optical righting (OR)
- protective extension (PE)
- equilibrium reactions- tilting (ER)
- equilibrium reactions postural fixation
Neck righting action on the body (NOB)
Stimulus: passively turn head to one side; tested in supine
Response: body rotates as a whole (log rolls) to align the body wit the head
Onset: 4-6 months
Integrated: 5 years
Body righting acting on the body (BOB)
Stimulus: passively rotate upper or lower trunk segment; tested in supine
Response: body segment not rotated follows to align the body segments
Onset: 4-6 months
Integrated: 5 years
Labyrinthine head righting (LR)
Stimulus: occlude vision; alter body position by tipping body in all directions
Response: head orients to vertical position with mouth horizontal
Onset: birth to 2 months
Integrated: persists
Optical righting (OR)
Stimulus: alter body position by tipping body in all directions
Response: head orients to vertical position with mouth horizontal
Onset: birth to 2 months
Integrated: persists
Body righting acting on head (BOH)
Stimulus: place in prone or supine position
Response: head orients to vertical position with mouth horizontal
Onset: birth to 2 months
Integrated: 5 years
Protective extension (PE)
Stimulus: displace COG outside of BOS
Response: arms or legs extend and abduct to support and to protect the body against falling.
Onset: arms 4-6 months, legs 6-9 months
Integrated: persists
Equilibrium reactions (ER)
Stimulus: displace the COG by tilting or moving the support surface (e.g. with a moveable object such as an equilibrium board or ball)
Response: curvature of the trunk toward the upward side along with extension and abduction of the extremities on that side; protective extension on the opposite (downward) side
Onset: prone 6 months, supine 7-8 months, sitting 7-8 months, quadruped 9-12 months, standing 12-21 months
Integrated: persists
Equilibrium reactions- postural fixation
Stimulus: apply a displacing force to the body , altering the COG in its relation to the BOS; can also be observed during voluntary activity
Response: curvature of the trunk towards the external force with extension and abduction of the extremities on the side to which the force was applied
Onset: prone 6 months, supine 7-8 months, sitting 7-8 months, quadruped 9-12 months, standing 12-21 months
Integrated: persists
Special associated reactions
- homolateral synkinesis
- Raimeste’s phenomenon
- Souque’s phenomenon
- Imitation synkinesis
Associated reaction general
resist flexion normal UE = get flexion involved UE
resist extension normal UE = get extension involved UE
resist flexion normal LE = get extension involved LE
resist extension normal LE = get flexion involved LE