Unit VII part 2 COPY Flashcards
Initial infection or an infection lasting less than one month
Acute infection
What classification of infection has a high incidence with children less than 12 years old
Acute infection
Infection lasting longer than one month or that has failed the initial course of antibiotic therapy for acute osteomyelitis
Chronic infection
What classification of infection is seen mostly in adults
Chronic infection
What is the most common single pathogen
Staphylococcus aureus
What kind of invasion by an organism is caused by open fx, surgery, trauma, GSW?
Direct or exogenous invasion
What kind of invasion by an organism is caused by hematogenous, infection from a distal site, usually sen in long bones
Indirect or endogenous invasion
What kind of invasion by an organism is caused by soft tissue, decubitus or diabetic ulcers
(surrounding areas)
Extension or contiguous invasion
What type of invasion most frequently affects growing bones in young boys (
Indirect
What are the most common sites of indirect injury in children
Distal femur
Proximal tibia
Humerus
Radius
What are the most common sites of infection because they are vascular
Pelvis & vertebrae
Direct entry can occur at any age when there is?
An open wound
Metaphysis
Growth plate
Where do the microorganisms lodge themselves in the bone
Metaphysics
Area of devitalized bone seperates from living bone and forms
Sequestra
Part of the periosteum that continues to have blood supply forms new bone
Involucrum
Sequestrum
Dead bone
Pathophysiology of osteomyelitis
Bacteria enters bone Inflammation occurs Purulent material collects within bone Increased pressure ->pain Ischemia & vascular compromise->decrease O2 Bone dies & Sequestrum form Involucrum grows around Sequestrum
Why is Sequestra a haven for bacteria
Unreadable by antibiotics or leukocytes due to pus enclosure
Complications of osteomyelitis
Fractures Chronic infection Sepsis Deformities Brodie's abscess Amputation
What can develop at the epipysis of the bone
Brodie’s abscess
Where is the most common place for a Brodie’s abscess
Tibia
S/S acute osteomyelitis
Fever Chills Malaise nausea Restlessness Bone pain that's unrelieved with rest Swelling, tenderness & warmth at infection site Restricted movement of affected part
S/S of chronic osteomyelitis
Constant bone pain & swelling
Drainage sinus tract
Local signs more common
What are some diagnostic tests done for osteomyelitis
Wound and blood cultures H & P Increase WBC (infection) Increase ESR (inflammation) Bone scan X-ray MRI CT
What is the best tool to use for early diagnosis of osteomyelitis
Bone scan
What is the best treatment for osteomyelitis
Vigorous & prolonged IV antibiotic therapy
Decompression surgery
Saucerization
Use of one drain coming in one going out for continuous or intermittent irritations
Closed wound
What kind of wound would you use dressing changes for Debridement
Used for invasion of anerobic organisms
Open wound
Are amputations more common in males or females
Males
Most puts toons occur where
Lower extremity
Lower extremity amputations are caused by ?
PVD (diabetes, atherosclerosis)
Upper extremity amputations are caused by?
Trauma
Accidents
Burns
Frostbite
Goal of prosthesis
To preserve the most distal level that will heal, try to preserve elbow & knee joints
To preserve the most distal level that will heal, try to preserve elbow & knee joints
Goal of prosthesis
The level of amputation is determined by
Amount of circulation and presence of infection
Are all pt’s candidates for prosthesis ?
No
Who expends more energy for ambulation amputees or non amputees
Amputees
The longer the residual limb, the _______ the energy costs for the amputee
Lower
Amputation through a joint
Disarticulation
Occurs through ankle @ level of foot, take both malleoli
Syme’s amputation
BKA
Below knee amputation
AKA
Above knee amputation
Lower extremity amputation including half of pelvis is removed
Hemipelvectomy
Entire shoulder & arm amputated
Forequarter amputation
Type of amputation that has actual or potential infection, stump left open for drainage
Open or guillotine
Type of amputation that allows weight bearing, no infection present, may or may not have drains
Closed or myoplastic or flap
When is a total contact rigid dressing placed on pt
During surgery
Aluminum rod that is attached to the ankle piece which is attached to a rigid dressing
Pylon
What is a disadvantage of immediate post op prosthesis
Unable to visualize operative site
infection risk
Delayed prosthesis that decreases edema & begins stump molding for prosthesis
Compression dressing
Aching, tingling, or itch in a amputated limb
Phantom sensation
Phantom sensation is more frequent in
AKA
4 stages of adjustment to loss of body part
Impact
Retreat
Acknowledgement
Reconstruction
In what stage does the pt show despair, discouragement, passive acceptance
Impact
In what stage of loss does the reality of the amputation become apparent & acute grief is seen
Retreat
In what stage does the pt show a willingness to participate in care & rehab
Acknowledgement
In what stage does the pt try to reach maximum rehab potential
Reconstruction
Most frequent complication of amputations is
Contracture for above the joint amputations
What would you do to help prevent deformities
Place the pt prone 3-4 times a day for 30 minutes
How long does it take to shrink the stump for a permanent prosthesis
2-3 months
What do you want to avoid with amputations to avoid contractures
Dangling
Elevating limb after first 24 hours
What are complications of amputations
Injury
Skin breakdown
Pneumonia
Thrombophlebitis
More Bone cancer cases each year are found in?
Men
More deaths per year from bone cancer occur in
Men
Bone cancer effects who more often?
More children then adults
Arise in a particular tissue
Originates in the bone
Primary tumor
Cancer that spreads to another tissue from the original site
Secondary tumor
Is primary or secondary tumor the most common bone cancer?
Secondary tumor
What is the most common malignant primary bone tumor seen in adults
Osteosarcoma
Osteosarcoma is usually seen in what bones
Distal femur, proximal tibia & proximal humerus (long bones)
S/S of osteosarcoma
Pain
Local tenderness
Enlargement of part affected
Limited joint movement