NEURO EXAM Flashcards

1
Q

Head circumference of an average term infant

A
  • 34-35 cm at birth,
  • 44 cm at 6 mo,
  • 47 cm at 1 yr of age
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2
Q

2 fontanels at birth

A
  • A diamond-shaped anterior fontanel at the junction of the frontal and parietal bones that is open at birth
  • A triangular posterior fontanel at the junction of the parietal and occipital bones that can admit the tip of a finger or may be closed at birth
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3
Q
  • gestational age, a premature infant blinks in
    response to a bright light
  • the infant maintains eye closure until the light source is removed.
  • turns the head and eyes toward a soft light, and a
    term infant is able to fix on and follow a target, such as the examiner’s face.
A
  • 28 WK
  • 32 WK
  • 37 WK
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4
Q
  • Assess the posterior segment of the eye using the
  • Normal results shows
A
  • red reflex test
  • symmetric reddish-pink retinal reflections
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5
Q

CRANIAL NERVES

A
  • Oculomotor (Cranial Nerve Ill),
  • Trochlear (Cranial Nerve IV),
  • Abducens Nerves (Cranial Nerve VI)
  • Facial Nerve (Cranial Nerve VII)
  • Vestibulocochlear Nerve (Cranial Nerve VIII)
  • Glossopharyngeal Nerve (Cranial Nerve IX)
  • Accessory Nerve (Cranial Nerve X!})
  • Hypoglossal Nerve (Cranial Nerve XII)
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6
Q

refers to muscle tissue that has been replaced
by fat and connective tissue, giving ita bulky appearance with a paradoxical reduction in strength, as in Duchenne muscular dystrophy

A

Pseudohypertrophy

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7
Q

3 key tests for assessing postural tone in neonates

A
  • the traction response,
  • vertical suspension,
  • horizontal suspension
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8
Q

Timing of Selected Primitive Reflexes

Onset: 28 wk GA
Fully Developed: 32 wk GA
Duration: 2-3 mo postnatal

A

Palmar grasp

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9
Q

Timing of Selected Primitive Reflexes

Onset: 32 wk GA
Fully Developed: 36 wk GA
Duration: less prominent after 1 mo postnatal

A

Rooting

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10
Q
  • Soft Tissue of the Scalp
  • Presenting part
  • May extend across the midline and across suture lines
  • Edema disappears within the 1” few days of life
  • No treatment
A

Caput Succedaneum

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11
Q
  • Subperiosteal hemorrhage
  • Firm tense mass with a palpable rim localized over 1 area of the skull
  • Reabsorbed within 2wks-3mos
  • Calcify by end of the 2nd week
  • No treatment
  • Associated with skull fracture, usually linear10-25%
  • May develop hyperbilirubinemia
A

Cephalhematoma

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12
Q
  • Beneath the aponeurosis
  • Secondary to rupture of emissary veins connecting the dural sinuses within the skull with the superficial veins of the scalp
  • Associated with vacuum delivery
  • Fluctuating mass that straddles cranial sutures or fontanels that increases in size after birth
  • Resolve over 2-3 wk
A

Subgaleal hemorrhage

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13
Q

Fractures of the skull

  • Most common
  • result of pressure from forceps or from the maternal symphysis pubis, sacral promontory, or ischial spines
  • Asymptomatic
  • No treatment needed
A

Linear

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14
Q

Fractures of the skull

  • complication of forceps delivery or fetal compression
  • usually indentations of the calvaria similar to the dents in a ping-pong ball
  • advisable to elevate severe depressions to prevent cortical injury from sustained pressure
A

Depressed

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15
Q
  • May have acute deterioration on the 2. and 3 day of life
  • Hypotension, apnea, pallor, or cyanosis
  • Poor suck, abnormal eye signs, high-pitched, shrill cry
  • Convulsions, or decrease muscle tone
  • Metabolic acidosis, shock
  • Decrease hematrocrit or failure of the hematocrit to increase after transfusion
A

Severe Intraventricular Hemorrhage (IVH)

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16
Q

Usually present later in an early echo dense phase (3-10 days of life), followed by the typical echolucent (cystic) phase (14-20days of life)

A

Periventricular leukomalacia

17
Q

Classification of Brain Hemorrhage

bleeding into the germinal matrix only

A

GRADE 1

18
Q

Classification of Brain Hemorrhage

Germinal matrix with blood in the ventricles

A

GRADE 2

19
Q

Classification of Brain Hemorrhage

Intraventricular and parenchymal bleeding other than the germinal matrix

A

GRADE IV

20
Q

Classification of Brain Hemorrhage

Germinal matrix with blood in the ventricles and ventricular dilation

A

GRADE 3

21
Q

Dx for IVH

A
  • 32 wks of gestation and/or <1,000 g cranial ultrasound
  • Screening within | (detects 75% of lesions)
  • Follow-up ultrasound at 36-40 wks of postmentrual age to evaluate for PVL where cystic changes become visible
22
Q

ventriculoperitoneal shunt insertion

A

posthemorrhagic hydrocephalus (PHH)

23
Q

Tx for IVH

A
  • NONE

> Seizures should be treated with anticonvulsant drugs
Anemia and coagulopathy require transfusion with PRC or FFP
Progressive and symptomatic PHH should have a
ventriculoperitoneal shunt inserted
Diuretics and acetazolamide are not effective

24
Q

Fetal hypoxia may be caused by:

A
  • Inadequate oxygenation of maternal blood = s )
  • Low maternal blood pressure
  • Inadequate relaxation of the uterus to permit placental filling
  • Abruptio placenta
  • Impedance to the circulation of blood through the umbilical cord
  • Placental insufficiency
25
Q

Hypoxia after birth may be caused by:

A
  • Failure of oxygenation
  • Severe anemia
  • Shock severe enough to interfere with the transport of oxygen to vital
    organs
26
Q

is the initial preferred modality in evaluation of preterm infants

A

Ultrasound

27
Q

may help an determine which infants are at highest risk for long-term brain injury

A

Amplitude

28
Q
  • Decreases the rate of apoptosis
  • Suppresses the production of neurotoxic mediators
  • Core temperature: 33.5°C
  • Golden period: 1** 6 hours after birth (primary energy failure)
  • Duration: 72 hours (duration of mitochondrial changes)
  • Complications: thrombocytopenia, bradycardia, subcutaneous fat necrosis, over-cooling, cold injury syndrome
A

Therapeutic Hypothermia

29
Q
  • Drug of choice for seizures
  • IV loading dose (20mg/kilo)
  • Additional doses 5-10mg/kilo (up to 40-50mg/kilo)
  • Maintenance therapy 5ma/ka/24hr
A

Phenobarbital

30
Q

Poor Prognosis od Hypoxic-Ischemic Encephalopathy

A
  • multiple anticonvulsant medications
  • status epilepticus/focal seizures
  • therapeutic hypothermia
31
Q

poor prognostic signs of Spine and Spinal Cord Injury

A
  • Apnea on day 1
  • poor motor recovery by 3 mo
32
Q
  • Incidence 0.6-4.6/1,00 live births Brachial Plexus is
    stretched due to traction.
  • Common in macrosomic infants
  • When lateral traction is exerted on the head and neck during delivery of the shoulder in a vertex presentation
  • When the arms are extended over the head in a breech presentation
  • When excessive traction is placed on the shoulders 45% associated with shoulder dystocia
A

Brachial Palsy

33
Q
  • 5” and 6” cervicalperves
  • Adduction and internal rotation of the arm with pronation of the forearm
  • Moro reflex is absent on the affected side
  • Some sensory impairment of the outer aspect of the arm
  • Presence of hand grasp indicates a good prognosis
A

Erb-Duchenne Paralysis

34
Q
  • Most patients fully recover
  • Paralysis secondary to edema and hemorrhage about the nerve, function will return within ~
    a few months
  • Paralysis is due to lacerat would result in pe:
  • Initial conservative management with monthly ff-up
  • Intermittent immobilization during 1* 1-2wk
  • Gentle massage and range of motion exercises may be started by 7-10 days of age
  • Surgical intervention by 3 mo if function has not improved
A

Brachial Palsy

35
Q
  • Results from pressure over the facial nerve in utero, from
    efforts during labor, or from forceps use during delivery
  • Rarely due to nuclear agenesis of the facial nerve
  • Peripheral paralysis is flaccid and when complete
    involves the entire side of the face, including forehead
  • central paralysis the forehead wrinkles on the affected side because only the lower 2/3 of the face is involved
  • Injured by pressure will improve within a few weeks
  • Neuroplasty if the paralysis persists
A

Facial Nerve Palsy