Chapter 26 - Head, Face, Eyes, Ears, Nose, Throat Flashcards
what joints make up the skull?
sutures - immovable joints
cranial vault
houses brain
bones of skull
frontal, ethmoid, sphenoid, 2 parietal, 2 temporal, occipital bones
cerebrum
2 hemispheres; voluntary muscle activity
interprets sensory impulse,
controls higher mental functions (memory, reasoning, intelligence, learning, judgement, emotions)
Cerebellum
controls synergistic movements of skeletal muscle
coordination of voluntary movements
pons
controls sleep, posture, respiration, swallowing, bladder
medulla oblongata
lowest part of brain stem, regulates HR, BP, coughing, sneezing, vomiting
Meninges: outer to inner
dura mater - subdural space - arachnoid mater - subarachnoid space - pia mater
where is the CSF located?
b/w arachnoid mater and pia mater
surrounds and suspends the brain
History: head injury
retrograde amnesia - loss of memory of events before injury
anterograde amnesia - loss of memory of events after injury
Observation: head injury
disorieneted, blank stare, slurred speech, delayed verbal/motor responses, coordination, unfocused, distracted, memory deficit, normal cognitive functioning
palpation: head injury
tenderness, deformity on neck or skull
Special tests: head injury
neurologic, eye function, balance tests
neuro exam: head injury
cerebral testing (cognitive)
cranial nerve testing
cerebellar testing (coordination of motor function)
sensory testing
reflex testing
motor testing
Eye function exams
PEARL, eyes tracking, blurred vision
PEARL
pupils equal and reactive to light
dilated or irregular,
inability to accommodate light variance
Eye tracking
smooth movement,
rotary movement - nystagmus (possible lesion in posterior fossa of brain)
Balance tests
Romberg, BESS, coordination, cognitive tests, neuropsychological assessments
Romberg test
stand in double leg, single leg, tandem stances with shut eyes and hands at the sides
(+) tendency to sway or fall
BESS
balance error scoring system
double, single (non dominant foot), tandem stances (non dominant food to back) on hard and airex pad.
hands on hips, eyes close, for 20 sec, opposite limb is in 30 degrees of hip flexion and 40-50 degrees of knee flexion
max error score of 10
BESS errors
hands lifted off iliac crest, opening eyes, step, stumble, fall, moving angle of hip or knee, lifting forefoot, or heel, can’t stay in position of more than 5 sec
coordination tests
finger to nose, heel toe walking, standing heel to knee test
(injury to cerebellum)
Cognitive tests
count backwards from 100 by 7s, backwards spelling, naming months in reverse, tests of recent memory
Neuropsychological assessments
SAC, SCAT, ANAM
SAC
standarized assessment of Concussion
measures of orientation, immediate memory recall, concentration, delayed recall, neurological screening (LOC, amnesia, strength, sensation, coordination)
ANAM
Automated Neuropsychological Assessment Metrics
ex. ImPACT
sensitive to measuring cognitive function most susceptible to deficit after concussion
Skull Fx Etiology
often from blunt traum
skull fx S/Sx
severe headache, nausea, defect or indentation, blood in middle ear/ear canal/nose; ecchymosis around eyes (raccoon eyes); ecchymosis behind the ear (Battle’s sign), cerebrospinal fluid in ear canal and nose
skull fx management
complications from intracranial bleeding
bone fragments in brain
infection
immediate hospitalization and referral to surgeon
cerebral concussions
mild head injury
concussion etiology
immediate and transient post-traumatic impairment of neural functions
direct blow
countrecoup
injury to opposite side of initial contact
concussion S/Sx
blurred vision, dizziness, drowsiness, excess sleep, easily distracted, fatigue, in a fog, slowed down, headache, irritable, LOC, disorientated, memory issue, poor balance, ringing in ears, sensitive to light or noise, sleep disturbance, nausea/vomiting
post concussion syndrome etiology
occurs following a concussion, may be a few hours or a day after the initial impact
post concussion symtpoms/signs
persisten headache, impaired memory, lack of concentration, anxiety and irritable, giddy, fatigue, depression, visual disturbances, (can be weeks - months long)
second impact syndrome etiology
rapid swelling and herniation of the brain after a second head injury that occurs before the first is resolved.
brains blood auto regulatory system causes swelling of brain - increases pressure
second imapct S/Sx
no LOC, may look stunned, happens rapidly, dilated pupils, loss of eye movement, LOC –>coma, respiratory failure,
50% mortality rate
second impact management
must be noticed within 5 min, send to EMS,
prevention is key to avoiding second impact syndrome
Cerebral Contusion etiology
focal injury to brain that involves small hemorrhages or intracerebral bleeding in cortex, brainstem, or cerebellum
impact injury, head strikes immoveable object
cerebral contusion S/Sx
LOC, later becomes very alert and talkative, neuro exam will be normal, (headache, dizzy, nausea will persist)
cerebral contusion management
hospitalization, CT or MRI tests
Malignant Brain Edema etiology
occurs in young athletic population
diffuse brain swelling resulting from hyperemia or vascular engorgement
little to no injury to the brain
raises intracranial pressure, can be life-threatening
hyperemia
an excess of blood in the vessels supplying an organ or other part of the body.
Malignant Brain Edema S/Sx
rapid neuro detioration to coma and sometimes death
management of malignant brain edema
immediate recognition
rapid tx in emergency facility
Epidural hematoma etiology
blow to the head or skull fracture can cause tear of meningeal arteries
rapid blood accumulation –> hematoma
(happens in minutes o hours)
Epidural hematoma S/Sx
LOC, gradually worsening symptoms,
head pain, dizziness, nausea, dilation of one pupil (same side as injury), sleepiness
later symptoms: deteriorating consciousness, neck rigidity, depression of pulse/respiration, convulsions
management epidural hematoma
CT scan to diagnose, pressure must be surgically released
Subdural hematoma etiology
more frequent than epidural,
most common cause of death in athletes
acute: progress rapidly, like an epidural hematoma, arterial bleeding, assoc with brain contusion and skull injury
chronic: venous bleeding, low pressure, takes longer to become “serious”
S/Sx of subdural hematoma
complicated: LOC, dilation of one pupil (same side as injury)
Uncomplicated and complicated mutual symptoms: headache, dizzy, nausea, sleepiness
management for subdural hematoma
immediate transfer, CT scan, MRI needed
Migraine headaches etiology
neurological disorder which can last 4-72 hours
common in women
may be genetic
triggers: foods, meds, sensory stimuli, lifestyle changes
migraine symptoms
throbbing, pulsating pain on one side of head, nausea, vomiting, sensitive to light/sound/smell, aura, visual changes, tingling sensation, numbness, dizziness
management for migraine
prevention - prophylactic meds
where are frontal sinuses housed
supraorbital ridges
temporomandibular joint
articulation b/w mandibular condyle and mandibular fossa of temporal bone
hinge joint, also glides forward and backward, side-to-side when chewing.
mandible fracture etiology
mostly in collision sports;
usually lower jaw frontal angle
mandible fx S/Sx
deformity, loss of normal occlusion of teeth, pain when biting, bleeding around teeth, lower lip numbness
mandible fx management
temporary immobilization,
reduction and fixation by physician
4-6 week recovery, resume full activity in 2-3 months
mandibular dislocation etiology
prone to dislocation,
side blow to open mouth, forces condyle forward out of temporal fossa
mandibular dislocation s/sx
locked open position, malocclusion of teeth
managemtn - mandibular dislocation
ice, immobilize, reduce
soft food diet, NSAIDs, analgesics,