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84 Cards in this Set

  • Front
  • Back
list blood loss volumes for the 4 classes of shock
I: <750
II: 750-1500
III: 1500-2000
IV: >2000ml
scoring for the motor part of GCS
I: no movement
II: extensor posturing
III: flexor posturing
IV: withdraws to pain
V: localizes to pain
VI: perposeful movement
Canadian CT head rule
GCS <15 2h after injury
suspected open or depressed skull fracture
any sign of basal skull fracture
vomiting >= 2 episodes
age >65
preimpact amnesia >30 min
dangerous mechanism (ped vs mvc, ejection, fall >3ft)
Canadian CT neck rule
1. None of :
age >65
parasthesias
mechanism (>3ft/5stair, axial load, >100km/h, roll over/ejection, ATV)
2. plus one of the following: ambulatory at any time, delayed onset of pain, simple rearend MVC
3. then check neck rotation
type of fracture and mechanism
type of fracture and mechanism
Jefferson Fracture (burst of C1) from an axial load

note the overhanging edges of C1 on C2
name and mechanism
name and mechanism
Bilateral facet dislocation
flexion injury
see greater than 50% anterior dislocation of vertebrae
Unstable injuruy
types of odontoid fractures
I: stable
II: unstable
III: unstable
I: stable
II: unstable
III: unstable
name and mechanism
name and mechanism
Hangman fracture
C2 bilateral pars interarticularis fractures
caused by hyperextension
name and mechanism
name and mechanism
Extension or Flexion teardrop fracture
Unstable
name and mechanism
name and mechanism
flexion-distraction (Chance fracture)
Horizontal fracture though middle and posterior columns
most commonly from flexion in MVC wearing lap belt
Anterior Cord Syndrome
Mechanism: Flexion of cervical v. or direct anterior cord injury
Findings: paralysis, loss of pain and temp, preserved proprioception and vibration
name and function of each tract
name and function of each tract
green- dorsal column: proprioception, vibration,
red- lateral corticospinal tract: motor function
blue- spinothalamic tract: pain, temperature, touch
Central Cord Syndrome
Mechanism: typically elderly hyperextension injury
Findings: Motor impairement in upper>lower limbs, and also variable touch, temperature, bladder dysfunction
Brown-SeQuard Syndrome
Hemisection of cord
Findings: Ipsilateral loss of motor, vibration, sensation and contralateral loss of pain and temp
Chest tube output requiring thoracotomy
>1500ml immediately or >200ml/h x 2 hr
Beck's Triad
1. Muffled heart sounds
2. JVD
3. Hypotension
ED thoracotomy indications
1. Arrest within 15min of presentation after penetrating chest trauma
2. SBP <50 after fluids with pen chest trauma
3.
P/E for posterior hip dislocation
shortened, internally rotated, and adducted
Young and Burgess Pelvic fractures
1. Lateral compression: fracture rami and/or iliac wings
2. Ant/Post compression: opens pubic symphysis and if opens SI joints called "open book"
3. Vertical Shear: fall from height causes shear of SI joint
Penile fracture
fracture of corpus cavernosum
Tx: surgical evacuation and repair tunica albugin
Neck zones
I: clavicles to cricoid
II: cricoid to angle of mandible
III: angle of mandible to base of skull
Penetrating neck trauma: hard and soft signs
Hard: expanding hematoma, pulsatile bleeding, air bubbling from wound, hematemesis, bruit, stridor, decreased/absent radial pulse
compartments of the lower leg
Anterior
Superficial Posterior
Deep Posterior
Lateral
Findings of compartment syndrome
Pressure (tense compartment)
Pallor
Pulselesness (late)
Pain out of proportion
Pain with passive stretch
parasthesias
Normal compartment pressures:
Normal 0-10mm Hg
>20 mm Hg is abnormal
Urine findings of rhabdomyolysis
blood on dip and minimal/no RBCs on analysis
Parkland Formula
4ml x %BSA x Wt in kg = fluids over 24hrs
(only count 2nd and 3rd degree)
give half in first 8hrs
degrees of burns
1st: epidermis, red, no blisters
2nd superficial: partial dermis, blistering, red, painful, blanching
2nd deep: partial dermis, blistering, non-blanching, red to pail white, painful
3rd: full dermis, charred, black or white, non painful, leathery, impaired touch sensation
4th: into subcutaneous, bone, muscle
Acid burns
Coagulative necrosis: causes an eschar barrier so burns less deep
Alkali burns
Liquefactive necrosis: no barrier formed and burns can be deeper than acids
Elbow imaging lines?
Radiocapitellar line
Anterior humeral line: should pass thought middle 1/3 of capittellum

Line from radius intersects middle 1/3 of capitellum
Monteggia fracture
Ulnar shaft fracture with radial head dislocation
Galeazzi fracture
radial shaft fracture with disruption of DRUJ
*unstable and requires ORIF
injury and x ray finding
injury and x ray finding
scapholunate dissociation
Terry Thomas sign (widening of scaphoid-lunate space)
injury and xray finding?
injury and xray finding?
Lunate dislocation
spilled tea cup sign
Injury and x ray findings?
Injury and x ray findings?
Perilunate dislocation
Lunate properly aligned with radius but capitate not aligned with lunate
Ulnar collateral ligament injury. Findings?
From valgus stress to 1st phalanx
Tender over proximal 1st phalanx
laxity of 1st phalanx to valgus stress
acceptable volar angulation of metacarpal neck fractures
5th: <40 degrees
4th: <30 degrees
2nd and 3rd: <10 degrees
(2nd and 3rd are less mobile)
Flexor digitorum profundus avulsion injury findings and treatment?
unable to flex DIP with PIP and MCP held in extension.
Requires splinting and ortho referral for surgery
Extensor tendon rupture findings and treatment
unable to extend DIP
6 weeks of splint in extension
Neer Classification
Proximal humerus fractures
4 parts: greater tubercle, humeral head, lesser tubercle, shaft
count part: separation by 1cm or angulation of >45 degrees
Proximal humerus fractures
4 parts: greater tubercle, humeral head, lesser tubercle, shaft
count part: separation by 1cm or angulation of >45 degrees
Ottawa Knee rules
X ray if any of the following:
1. Unable to bear weight x 4 steps
2. Tender only over patella
3. tender over fibular head
4. age >55
5. Inability to flex to 90 degrees
Inury?
Inury?
high riding patella indicates patellar tendon rupture.
See suprapatellar gap and low riding patella with quadriceps rupture
Lachman's test?
Tests ACL
anterior forse with knee in 30 degrees flexion
more sensitive than anterior drawer
injury to knee from rapid deceleration and pivoting (ie. soccer)
ACL
Ottawa Ankle rules
X ray if malleolar pain and any of:
1. Pain at base of 5th MT
2. Pain over navicular
3. Inability to wt br 4 steps at injury and in ED
4. Pain to posterior 6cm or tip of either malleoli
Maissoneuve fracture? and Tx?
Maissoneuve fracture? and Tx?
Eversion injury
Medial malleolus # or deltoid disruption with disruption of syndesmosis and proximal fibula #
ORIF
Normal Bohler's angle?
<20 degrees
if less consider calcaneus fracture
Lisfranc injury
Disruption of ligament between 1st cuneiform and 2nd metatarsal.
Look for gap between 1st and 2nd or 2nd and 3rd metatarsal or X ray.
Requires ORIF.
Most common pathogen in osteomyelitis?
Staph aureus
Microscopic findings of gout? crystals made of? Treatment?
Needle shaped negatively birefringent crystals.
Uric Acid
Treat with NSAIDs +/- colchicine
Pseudogout findings on microscopy? Crystals made of?
rhomboid shaped positively birefringent crystals.
Calcium pyrophosphate
Synovial fluid findings in septic joint?
WBC> 50 000
>90% neutrophils
gram stain + in only about 50%
causes of septic joint?
Staph aureus most common.
Consider N. Gonnorrhea in sexually active
tests for carpal tunnel
Phalen's test: symptoms with hyperflexion of wrists for 90 seconds
Tinnel's sign: median nerve parasthesias with tapping tunnel
De Quervan's Tenosynovitis pathology, testing, Tx?
Synovitis of abductor pollicis longus and the extensor pollicis brevis.
Finklesteins test: pain at radial styloid with passive ulnar deviation wrist with hand in fist and thumb inside
RICE, NSAIDS, +/- steroid injection
Flexor Tenosynovitis findings?
Flexed posture of digit
Pain with passive extension
diffuse swelling
pain with palpation of flexor sheath
Supracondylar humeral # classification
Gartland classification
I: anterior cortex broken but no angulation/displacement
II: anterior cortex broken, angulate posteriorly with posterior cortex intact
III: completely displaced (no cortex intact)
fracture and treatment
fracture and treatment
Tillaux fracture:
A pediatric Salter-Haris type 3 to the anterior lateral aspect of the tibia. Requires ORIF
Dequervain's tenosynovitis
inflammation of extensor tendons of thumb
pain with flexion (finklesteins test)
Tx: steroid injection
Flexor Tenosynovitis signs?
swelling of finger
pain with passive extension
pain with proximal palpation flexor tendon (palm/wrist)
hand held in flexion
Spinal stenosis
caused by narrowing of lumbar canal
pain with sitting
wknss, parasthesias
Tx: PT +/- surgery
Central Cord syndrome
upper limbr>lower limb wknss
Anterior cord syndrome?
Impaired pain and temp
intact vibration, and proprioception
Brown Sequered syndrome
penetrating partial transection of cord
contralateral sensory deficits and ipsilateral motor deficits
Tilleau fracture?
Salter-Harris III of the medial aspect of distal tibia
jones fracture
Stress fracture of base of 5th
cast vs surgery
Dancer's fracture
avulsion of base of the 5th during inversion injury
Tx: cast
Gout
Uric Acid
negatively birefringent crystals
needle like crystals
Tx: NSAIDs
Pseudogout
Calcium pyrophosphate
positively birefringent rhomboid crystals
Tx: NSAIDS
polymyositis
proximal muscle pain and weakness
if there is a rash- dermatomyositis
elevated CK
Polymyalgia Rheumatica
Fever, pain in neck, shoulders, hips
associated with temporal arteritis
elevated ESR, CRP
Tx: steroids
SLE diagnostic test and symptoms
ANA
malar rash, polyarthralgia, multiple organ dysfunction
Sjorgren's syndrome
dry eyes and dry mouth
progressive destruction of salivary/lacrimary glands
NEXUS rule?
N- neuro findings (parasthesias, wknss)
S- spinal tenderness
A- altered LOC
I- intoxication
D- distracting injury
Unstable C-spine fractures and pneumonic?
Jefferson Bit off a hangman's ***
Jefferson
Bilateral facet dislocation
Odontoid fractures (type 2 and 3)
Atlanto-occipital dislocation
Hangmans
Teardrop
Jefferson
C1 burst fracture
Bilateral facet dislocation and mechanism
has a cervical spondylolisthesis
Mechanism: hyperflexion
Hangmans fracture
hyper-extension injury
bilateral pedicle fractures of C2
Teardrop fracture?
hyperflexion or extension
anterior inferior corner broken off
Chance Fracture
from lap belt injury
Flexion-distraction injury to lumbar vertebrae
transverse fracture through body and splaying of spinous processes
Central cord injuries?
elderly
extension injury
arms>legs affected
Anterior cord injury?
flexion injury
motor function impaired
pain/temp impaired
gross touch, and proprioception ok
Brown-Sequard
Motor and proprioception impaired ipsilateral
Pain/temp impaired contralateral