Lecture 2 Flashcards
Prader-Willi Syndrome
A rare genetic disorder in which the paternal genes on chromosome 15 are deleted or unexpressed resulting in a number of physical, mental, and behavioral problems.
Prevalence: PWS
1 out of 10,000 to 15,000 live births are diagnosed with Prader-Willi
Impacts more than 400,000 worldwide
Boys and girls are impacted equally
Clinical Features PWS in Infancy
Hypotonia Distinct facial features: almond-shaped eyes Thin upper lip/downturned Head narrowing at temples FTT (failure to thrive) Lack of eye coordination Poor responsiveness
Very difficult to get these children to feed, they are obese as children becasue they are insatiable, delayed motor development, hypogonadism (produce little to no hormones)
Clinical Feauture PWS in Childhood
Excessive food craving Weight gain (especially in trunk region) Hypogonadism Poor growth: small stature hands/feet Learning disabilities (mild to moderate) Delayed motor development Speech problems Behavior problems Sleep disorders (Apnea)
Specific Speech and Language Deficits in PWS
Speech sound errors Hypernasality Flat intonation Imprecise articulation Slow speaking rate Abnormal pitch
Treatment and Care for PWS
Nutrition and diet modification Growth hormone treatment Sex hormone treatment Therapies: Physical Therapy, Speech Therapy, Occupational Therapy, Developmental Therapy, Nutrition, Mental Health Therapy Environmental modification
OT reccommends swimming
Speech (SLP) role in PWS
SLP will address speech and language issues in the child with PWS
SLP will address feeding concerns in infancy
Prognosis for PWS
There is no cure for PWS
Most will require specialized care and supervision throughout their lives
Most adults will reside in residential care facility so eating habits can be monitored
Biggest health risks are complications from obesity
Therapy at home & school will be needed to address cognitive delays, communication, and behavioral delays
Dandy Walker
DW malformation is characterized by a hypoplastic or missing cerebellar vermis, enlarged 4th ventricle, and cyst of the posterior fossa
Prevalence/Prognosis DWS
DWM is estimated to occur in >1 in 25,000 live births. It is the most common congenital malformation of the cerebellum
Mortality rates have decreased over time with medical advances
Current estimates suggest 27% of individuals with DWM die early
Overall prognosis is considered to be good and hopeful for those that survive
Best prognostic factor is absence of other congenital defects
Associated Problems in DWS
Hydrocephalus Seizures Polycystic Kidneys Cardiac Anomalies Limb and facial abnormalities Symptoms of increased intracranial pressure Lethargy, emesis, irritability
Associated Symptoms in DWS
Frequent Other CNS abnormalities/disorders may co-occur Decreased intelligence Unsteady gait Nystagmus Lack of coordination Occasional Vision Problems Hearing Problems Cleft lip/palate
Treatment/Management of DWS
Early treatment included removing the membranes of the posterior fossa (high mortality rates)
Surgical management of DWM currently includes shunting of the 4th ventricle to drain excess CSF buildup (caused by cyst formation)
Anticonvulsive therapy or medication is commonly needed
Variable symptoms are treated as needed by (including PT, OT, ST)
Fragile X
Fragile X Syndrome is an X-linked condition caused by a mutation on the FMR1 gene on the X chromosome. It is usually inherited from a mother who is a carrier of the condition.
Fragile X inheritance is complicated. The FMR1 mutation involves a region of repeating DNA bases on the gene. A FMR1 gene with 55-199 repeats is said to have a “premutation” and a gene with 200 or more repeats is said to have a “full mutation.” Premutations passed on in an egg may or may not develop into full mutations.
Prevalence of Fragile X
Fragile X is one of the most common genetic disorders
1 in 4000 males
2 in 6000 females
Clinical Features of Fragile X
Delay in crawling, walking, or rotating Hand clapping or hand biting Hyperactive or impulsive behavior Anxiety and unstable mood Intellectual disability Speech and Language Delay Tendency to avoid eye contact
Clinical Feautures of Fragile X 2
Autistic Behavior Sensory Integration Problems Gastro-esophageal Reflux Recurrent Otitis Media Seizures affect about 25% of people with Fragile X Flat Feet Flexible Joints
Clinical Features of Fragile X 3
Low muscle tone Large body size High arched palate Scoliosis Large testicles Large forehead
Clinical Features of Fragile X 4
Large ears
Prominent jaw
Long face
Soft skin
Treatment/Management of Fragile X
No specific treatment
Treatment as indicated for any accompanying health issues
OT for sensory integration
ST may be needed for problems with poor intelligibility, pragmatics, grammar, oral motor difficulties, and phonological problems
Prognosis for Fragile X
Prognosis is dependent on the degree of intellectual disability and the severity of the other associated conditions
NAS (neonatal Abstinence Syndrome) PRENATAL
A collection of symptoms found in newborns that have been exposed to addictive drugs in the womb. The drugs pass through the placenta to the infant. Once the infant is born, and is no longer receiving the drug(s), (s)he goes through withdrawal known as NAS
NAS POSTNATAL
A collection of symptoms found in the infants who are treated with drugs such as fentanyl or morphine for pain shortly after birth. They subsequently go through withdrawal when the drugs are withdrawn
Epidemiology of NAS
4.3% of pregnant women ages 15-44 reported using illicit drugs (2003)
10% of 4.1 million live births in the US have been exposed to opiates or opioids (heroin, methadone, pain pills)
NAS is more commonly seen in urban areas
Clinical Features of NAS
Signs and symptoms typically begin between 103 days after birth, but may take up to 10 days to appear
Signs and symptoms depend on the drug(s) the mother used, how long she used the drug(s), the amount, and whether the baby was premature or term
NAS and prenatal toxemia
can be prenatally toxemic, but not necessarily have NAS
woven stretchy blankets are better for NAS, proprioceptive feedback
tremors
Dandy Walker considerations
cysts are numerous and fluid-filled, resulting in massive enlargement of kidneys
phenobarbital (common anticonvulsive)
drug treatment can inhibit therapy/development
Fragile X considerations for therapy
eye contact is very overstimulating to them, do not want to do this in therapy initially. They need sensory/movement/vestibular input to organize visual stimulation.
1/3 will also have autism
Clinical Features of NAS list
Blotchy skin coloring (mottling) Diarrhea Excessive sucking Fever Hyperactive reflexes Increased muscle tone Irritability
Common Long-term Effects of NAS
Boys – increased risk for ADHD and behavioral disorders
Girls – increased risk for mood disorders
Both – increased risk for mental retardation and learning impairments (Weissman, et. Al, 1999)
NAS Scoring System
May help determine when to start, titrate, or terminate therapy
Finnegan – Most common
Lipsitz
Modified scales per institution
Treatment/Management of NAS
Swaddling Rocking the infant Reducing noise and lights Breastfeeding unless contraindicated Team: ST, OT, PT, MD, Nursing, Mental Health Professionals, Social workers
Drug management of NAS
Opioids – used for opioids and polydrug withdrawal
Phenobarbital – used for polydrug withdrawal (most common)
Methadone – used for opioid withdrawal
Morphine – used for polydrug withdrawal, helps control seizures
Prognosis for NAS
Long-term outcomes are highly dependent on whether or not the mother continues to use addictive and/or illicit drugs
Environmental support/factors impact prognosis as well
William’s Syndrome
Williams syndrome is caused by the deletion of genetic material from chromosome 7. The loss of 1 of 2 copies of elastin protein in chromosome 7 is often associated with the cardiovascular and musculoskeletal issues seen in patients.
Prevalence of William’s Syndrome
1 in every 10,000 births
Equal male to female ration
Proportionate across race
An estimated 20,000-30,000 individuals in the U.S. have WS
Unlikely for other family members to have WS but if the person who has WS plans to have children, the child has a 50% chance of also having the diagnosis
Clinical Features of Williams Syndrome
Small upturned nose Wide mouth Long philtrum Full lip Small chin Puffiness around the eyes Drooping cheeks
More Clinical Features of William’s Syndrome
Dental abnormalities (slightly small, widely spaced teeth)
Starburst (lacy white pattern in children with green and blue eyes)
Associated Problems in William’s Syndrome (Consistent)
Cardiovascular issues Supravalvular Aortic Stenosis (Narrowing of the blood vessels) Low birth weight Feeding problems Hyperacusis Developmental Delays
More associated problems in William’s Syndrome (Consistent)
Mild to moderate learning disabilities
Overly friendly
Lack of social inhibition
Strength in expressive skills
Associated Problems in William’s Syndrome (frequent)
Hypercalcemia – elevated blood calcium level
Kidney abnormalities
Musculoskeletal issues such as low muscle tone and joint laxity: loosening of joint bones
Mental disability – 75% of WS
Associated Problems in William’s Syndrome
High blood pressure Irritability/colic-like Modified diet FTT Low muscle tone Distractibility Fine motor / spatial impairment
Other Associated features of William’s Syndrome:
Elfin
Cocktail Party
Williams syndrome is also sometimes called:
Elfin syndrome – inappropriate to use. Adult stature is slightly smaller than average and facial features become more apparent with age
Cocktail Party syndrome – inappropriate to use. Clients have excellent speech, appear to have strong social skills, fixated eye contact, and extreme friendliness. Many people with WS prefer talking to older individuals rather than peers.
Treatment of William’s Syndrome
Modified diet, monitor calcium level
Heart surgery
PT (joint issues, delays, low muscle tone)
ST (feeding as infants, social skills intervention, cognition, receptive language, expressive vocabulary +, ability to tell narratives +) Therapy most effective when accessing strengths
Prognosis for William’s Syndrome
No cure Usually unable to live independently Most people with WS will have a shorter lifespan due to complications of: Heart failure Kidney disease Death (from anesthesia)