Genetics 2 Flashcards
Arnold-Chiari Malformation
Brainstem, 4th ventricle, and part of cerebellum are pulled downward through the foramen magnum
Arnold-Chiari Malformation
Leads to blockage of
CSF flow
Arnold-Chiari Malformation
Pressure may develop on brainstem where the
cranial nerves are located
Arnold-Chiari Malformation
A ventriculoperintoneal (VP) shunt provides drainage of
CSF from the ventricles to an extra cranial compartment
Arnold-Chiari Malformation
Extra tubing is left in the extracranial site to
uncoil as the child grows
- Risk For Pressure Ulcers with Myelomeningocele
- Factors which contribute to the development of pressure ulcers:
- Friction
- Pressure from casts or splints
- Bony prominence
- Vascular problem
- Poor transfer skill
- Obesity
- Asymmetrical weight bearing or posture (scoliosis, orthopedic deformities)
Bowel and Bladder controlled by
S2-4
NTDs are detected prenatally by
Ultrasonic scanning and MRI
Serum alpha‐fetoprotein (AFP) testing
Prenatal Diagnosis of Myelomeningocele
Amniocentesis can detect only
Open NTDs
Is recommended women who have previously had children with NTDs
Prenatal diagnosis makes it possible for
- Planned cesarean section
- Therapeutic abortion
Translucent:
meningocele
Non-translucent:
myelomeningocele
Children with spina bifida have a greater risk of becoming
allergic to latex
Latex allergy symptoms
Watery eyes, wheezing, hives, rash, swelling, and in severe cases, anaphylaxis, a life‐threatening reaction
Unstable Hip Dysplasia
Hip is positioned normally but can be dislocated by manipulation (Barlow maneuver)
Subluxation/Incomplete Dislocation
Femoral head remains in contact with the acetabulum but the femoral head is partially displaced or uncovered
Dislocation
femoral head totally outside the acetabulum
Carrying the infant with hip flex, abd, ER —>
increase hip stability
Most dislocations occur in the
perinatal period
Breech position in utero Places the hips in a position of acute
flexion and adduction
- The longer the dislocation is present, the greater the _______
Stretching of the _____
Flattening of the ____
secondary changes
hip capsule
femoral head
Congenital Hip Dysplasia
In the newborn and non-ambulatory up to 12 months, there may be one or more positive signs
- Physical asymmetries in ROM (even as little as 10 degrees is considered significant, especially limitation of hip abduction)
- Asymmetry in the buttock or gluteal fold (higher on the affected side)
- Extra thigh skin folds
- Leg length discrepancy
Uncorrected bilateral dysplasia may cause
duck waddle gait
Unilateral dysplasia may cause a limp with a
+ve Trendelenburg sign during the stance phase of gait on the involved side