General family medicine Flashcards
What are McIsaac’s criteria and when do you treat strep pharyngitis?
II. Criteria: Modified Centor (recommended) 1 Tonsillar exudate or erythema 2 Anterior cervical adenopathy 3 Cough absent 4 Fever present 5 Age Age 3 to 14 years: +1 point Age 15 to 45 years: 0 points Age over 45 years: -1 points II. Approach: Clinical Suspicion based on scoring above Strep Score 4 to 5 (or Strep Score 2 if patient unreliable) Treat with antibiotics Strep Score 2 to 3: Perform rapid antigen test Antigen test positive: Treat with antibiotics Antigen test negative: Throat Culture Strep Score 0 to 1 Provide Pharyngitis Symptomatic Treatment Tx of strep pharyngitis Amoxyl 250mg TID 7D
What are the criteria for the Pre-test probability for DVT?
Active cancer +1 Paralysis or imbilization +1 Recently bedridden > 3d or surgery within 4 wk +1 Localized tenderness in deep vein system +1 Entire leg swollen +1 Calf swelling >3cm asymptomatic side Pitting edema on affected side +1 Superficial (non-varicose) veins +1 Alternative dx more likely than DVT -2 0-1 DVT unlikely >/= 2 likely
What are the preventative measures for COPD?
Smoking cessation
Limit spread of spread of viral infections
Vaccines: influenza, pneumococcal vaccine
Rehab and nutrition programs
How do you diagnose acute bronchitis?
1) Acute onset of symptoms- cough, sputum production, chest discomfort but normal respiratory exam
2) Chest X-ray, sputum cultures only indicated for patients with evidence of consolodation
3) Green/yellow sputum production is indicative of inflammatory reaction, and does not necessarily imply bacterial infection
Antibiotics are not recomended in the management of acute bronchitis
What is the acute management of an open fracture?
1) ACB’s ATLS stuff
2) clean the wound of any large debris
3) Wash the wound but don’t scrub it
4) Draw a good picture of the wound, its size and location and Document neurovascular exam
5) Cover wound with wet sterile gauze
6) X-ray
7) start IV antibiotics
What are the important antibiotics for the Guistillo classification of open fractures?
1)Class 1- <1 cm–> IV cefazolin
2g IV q8h for 48h and then reasess
2)Class 2- 1-9cm–> IV cefazolin
3)
a) can easily be closed
b) requires a flab
c) neurovascular compromise
–> for grade 3 open fractures want to cover for
a) anaerobes–> clindamycin (150-450 mg q6), flagyl
b) gram negatives–> gentamycin
If it is a very dirty wound–> concerned about C.Perfringes–> Pen G
What is the most important classification of hip fractures?
1)Intra capsular (femoral head circulation is disrupted in these fractures IF FRACTURE IS DISPLACED–> AVN is a complication
a) subcapital
b) transcervical
2) extra capsular
a) intertrochanteric
b) sub-trochanteric
c) low basicervical (right at junction of neck and trochanteric line
What is the garden classification of femoral neck fractures? And how is this important?
The Garden Classification Helps in management of intertcapsular fractures
Garden 1- impacted into valgus
Garden 2- undisplaced
Garden 3- varus
Garden 4- neck displaced
Valgus or undisplaced (intracapsular undisplaced)–> in situ screw with 3 months protected weight bearing
Varus deformity (intracapsular displaced)–> hemiarthroplasty
What is the therapy for extra-capsular hip fractures?
a) intertrochanteric–> dynamic hip screw or short intermedullary device
b) subtrochanteric–> longer intermedullary device
c) low basicervical–> dynamic hip screw
What is the healing time and appropriate activity for fractures/sprains?
1) Hip fractures
2) ankle fractures- three months
- one month non-weight bearing crutches
- one month walking cast or airboot
- one month for physio
3) ankle sprain
- neutral ankle splinting/crutches+ non weight bearing x2 weeks
- walking cast or air boot x 4 weeks
- after 6 weeks physio prn
What are the three bones in the body that are most at risk for AVN and why?
The talus, scaphoid and femoral head due to their retrograde blood circulation
What is LARA and how is it used to describe a fracture?
Location- which bone, where in bone, intra-articular
Apposition of fracture fragments
Rotation
Angulation- distal relative to proximal fragment
-where is apex of deformity?
What are the general indications for an open reduction/ internal fixation in adult fracture care?
Non-union/ unstable fracture- floating limb or unstable
Open fracture
Neurovascular Compromise
Intra-articular displaced fractures by more than 2mm( b/ risk of post traumatic stiffness and arthritis)
Salter Harris III, IV, V
Poly-Trauma
examples of fractures considered to be unstable and requiring fixation:
1) displaced both bones of forearm
2) Holsteins ( distal third) shaft fracture of humerous
3) extra-articular wrist fractures- with comminution, poor bone
4) Spinal fractures with 2 or 3 columns affected
5) Displaced hip fractures
6) displaced tibial and femoral shaft fractures
How does mobility affect hip fracture patterns in the elderly?
1) people without hip joint osteoarthritis- good ROM= fracture femoral neck on way down to ground–> intra capsular fractures
2) people with hip joint osteoarthritis- bad ROM= fracture when hit ground-> extra capsular , inter-trochanteric or more distal fractures
What is the classification of hip fractures?
1)intertrochanteric
a) sub-capital femoral neck (most common)
b) Transcervical femoral neck
BY DEFINITION THERE IS DISRUPTION OF THE FEMORAL HEAD CIRUCULATION-> AVN AND NON-UNION ARE COMPLICATIONS
IF FEMORAL HEAD IN VALGUS AND THEREFORE NON DISPLACED–> SCREWS + PROTECTED WEIGHT BEARING X 3 MONTHS
IF FEMORAL HEAD IN VARUS THEREFORE DISPLACED–> HEMIARTHROPLASTY
2)extra-capsular
a) intertrochanteric-> TX IF DISPLACED GAMMA OR DYNAMIC HIP SCREW (DHS)
b) sub-trochanteric-> TX IF DISPLACED ARE DHS OR INTERMEDULLARY DEVICE
c) low basicervical -> TX IF DISPLACED ARE DHS
ALL EXTRACAPSULAR FRACTURES WILL HEAL AND HAVE EXCELLENT BLOOD SUPPLY
OPERATIVE TREATMENT SHOULD OCCUR WITHIN 48-72 HOURS
What is the classification of an ankle fracture?
1) count number of malleoli involved
a) medial
b) posterior
c) lateral
2) ankle mortise symmetric or assymetric
3) location of fibular fracture
OR
Weber A
Weber B
Weber C
What fracture do you need to rule out in a Weber C ankle fracture?
Maisonneuve fracture is combination of spiral fracture of the proximal fibula and ankle injury which could manifest by widening of the ankle joint due to distal tibiofibular syndesmosis and/or deltoid ligament disruption, or fracture of the medial malleolus.
What is the healing time for an ankle fracture?
Three months
- one month crutches
- one month walking cast or airboot
- one month physio
What is the treatment of a sprained ankle?
1) Neutral ankle splinting/ crutches/ non-weight bearing until swelling has decreased ~ 2 weeks
2) air cast or walking cast for subsequent 4 weeks
Total time to heal ~ 6 weeks
Avoid risky sports for 3 months
What other plantarflexors cross the ankle joint?
Flexor halicus longus
Flexor digitorum longus
What is the treatment for an achilles tendon rupture?
1) Partial tear- below knee splint/crutches->air cast->physio
2) complete tear-surgical management or wedge therapy-> physio
What are the factors that suggest instability of a wrist fracture?
Female
Age >65/ poor bone quality
Palmarly displaced/ angulated
High energy mechanism of injury
- initial displacement
- open injury
- intra-articular displacement
- lots of fragments
What are the classifications of wrist fractures?
1) Colles- extra articular, dorsally angulated/displaced metaphyseal fracture in adults
2) Smiths- extra articular, volarly angulated/displaced metaphyseal fracture in adults
3) Volar bartons fracture- intra articular fracture where volar lip of distal radius is displaced volarly
4) CHauffeur’s fracutre- intra-articular fracture of the radial styloid
5) Galeazzi- volarly angulated distal radius fracture with dorsal dislocation of distal ulna
6) Die punch fracture- intra-articular impaction fracture of lunate bone into distal radius
What are the principles of wrist fracture treatment?
1) Low energy- splint with f/u 7-10 days, replace splint with univalved cast
2) High energy-well aligned sgx in < 10 days
nod fully reduced sgx in < 24 hours
Open wound sgx < 6 hours
Cast no longer than 6 weeks, and avoid above elbow immobilization
What is the treatment for wrist injuries?
1)simple dorsally angulated (low energy)- closed reduction/ below elbow cast
+/- percutaneous pins
2) medium energy
a) extra articular with displacement- closed reduction +/- perc pins
b) scaphoid-> ORIF if > 2mm displacement, scaphoid flexed, high demand occupation
3) Higher energy : intra-articular- ORIF with plates
4) Highest energy
a) comminuted/ intra-articular- ORIF
b) carpal fracture/dislocations- ORIF
What is the diagnosis and treatment of a locked knee?
1) locked knee in young active adults- bucket handle tear of medial meniscus, normal knee x-ray
- Xray and refer to ortho for sgx tx within 2 weeks
2) middle aged- OA debris
- xray and refer to ortho for sgx tx within weeks or months
What is the treatment of a knee strain?
I- tenderness, no joint opening
II-abnormal opening with endpoint
III-joint opens- no endpoint
ALL OF THESE SHOULD HAVE A NORMAL X-ray
TX
grade I- supportive, no bracing
grade II, III- crutches, partial weight bearing, extension knee brace 2-3 weeks, physio and hinged knee brace 6-8 weeks
What is the most common injury in a knee strain?
MCL> LCL
Who needs an MRI in a suspected ACL blowout?
younger more active patients
grossly unstable knee such that early mobilization is impossible
block to knee extension (locked knee)
bony avulsion fracture
high performance athletes
What is the treatment of a torn ACL?
**ACL’s dont heal if in a splint, MCL’s do**
goals of treatment:
- early diagnosis
- splint until stable
- early protected ROM
SGX management needed if:
- grossly unstable knee
- block to motion ( locked knee)
- bony avulsion fracture
- high performance athlete
Who are the most common to have a quadriceps tendon rupture?
- body builders
- old men