Exam 2 Flashcards
(128 cards)
What is the main type of MD that only affects’ Boys
Duchenne
Why Does Duchenne MD only affect Boys
It is a recessive gene tied to the X chromosome, boys only get 1 x so it is always expressed even though it is recessive
What is the pathophysiology of MD
Absence of dystrophin leads to breakdown of muscle fibers
When is MD usually diagnosed in boys
3-7 years
Describe the pattern of weakness in MD
Neck flexors
Abdominals
Pelvic girdle
Proximal to distal UE musculature
Describe pseudohypertrophy as seen in MD
Larger muscles due to increased fat and connective tissue content
Not actually stronger
What percent of MD patients experience intellectual or behavioral problems
30%
What is the primary impairment of MD
Insidious weakness
What are secondary impairments of MD
Contractures
Postural malalignment
Osteopenia
decreased respiratory and cardiac capacity, GI motility issues
How old are MD patients when they first need a wheelchair
8-12
What 5 factors predict loss of ambulatory ability
50% reduction in leg strength
MMT <3 for hip extensors and <4 for ankle DF
Inability to climb stairs
More than 9 sec 10 meter time and inability to rise from the floor, predicts loss of walking within 2 years
10 meter time more than 12 seconds predicts ambulation loss within 1 year
What is the primary goal for MD treatment
Function and participation, prolonged standing and ambulation
What are some things to avoid with MD
Immobilization
aggressive strengthening
What is the rough survival rate of children with cancer and why
83%
increased efficacy if interventions
Survivor of cancer are ag great risk or what additional medical problems
Cognitive deficits
Functional impairments
Cardiovascular and pulmonary disease
Treatment of pediatric cancer in the CNS alone can cause what late effects
Cognitive, hearing and visual deficits
Treatment of pediatric cancer in the CNS, head, neck and gonads can cause what late effects
Endocrine abnormalities such as short stature, hypothyroidism, delayed secondary sexual development
Treatment of pediatric cancer in the MSK system alone can cause what late effects
Scoliosis and spinal shortening
What risk comes with receiving chemo or radiation as a child
10x greater chance of developing second malignancy
Describe acute lymphoblastic leukemia (ALL)
80% of all pediatric cases
Commonly occurs in 2-5 years of age
Chemo for 2-3 years
over 90% survival rate
Describe acute myelocytic leukemia (AML)
Most frequent in 0-2 years old
Survival rate of 63%
What is the second most common type of cancer in pediatrics and third in adolecents
Brain and CNS tumors
Name some brain and CNS tumors
Astrocytomas
Medullablastmas
Ependyomas
Describe posterior fossa sydrome
Ataxia
cranial nerve involvement
Decreased cervical AROM
Cerebellar mutism
Headaches
Drowsiness
Irritability