Expanded Newborn Screening Flashcards
Key factors in universla screening
Religion, autonomy, and public health
Criteria for screening
Important Accepted tx Facilities Early latent stage Suitable test Acceptable to pop Nautral history understood Consensus on who to treat Cost less than or equal to cost of med care Continous program
Aims of NBS
ID serious disorders with no outward signs of being present but which can be treated to minimize or prevent conseuqneces
Prevent serious probs
MCAD diagnosis
Use MS and should see increased C8
immediately
FA oxidation
24 hours
AA abnormalities
3-5 days
Endocrine disorders
What is important about punching?
Assign number FIRST
Notification
Best to contact PCP and tell him to inform family of instructions…PCP tells fam that specialist will call…then specialist call
At UK, we call family, then PCP
Require immediate followup
FA deects
GA-1
Urea cycle
One result adequate
Biotinidase or galactosemia
Summer effect of FA
More false positive in the summer
Hyperammonemia could mean
FA
AA
UC
What needs structures present in order to be formed?
Centrioles, mitochondria, peroxisomes
Genes of mitochondria
2 for rRNA , 13 for ETC, 22 for rTNA
Branched chain FAs
In peroxisome via alpha oxidation
VLCAD and MCADs
C22-C14
C12-C6
Free FA cause
Lethargy, vomiting, and death
Omega oxidation
Occurs in p450 system on liver…can happen if you can’t undergo beta
If you restest MCAD later
Might be negative…need to test early on
Important urea cycle cofactor
NAG
If newborn lethargic, think
Sepsis
Congenital heart failure
Metabolic dz
Get ammonia level is testing for sepsis
If elevated ammonia and ketones
Not FA
Citrulline indicator
If low, then more proximal (OTC)
If high, then more distal
Thyroid function tests
TSH-T4…female babies mascularized
Adrenal function tests
Congenital adrenal hyperplasia
Hemoglobinopathies
SS, SC, Bthal
CF test
Immunoreactive trypsinogen…also would be high if you are carrier…use mutation analysis
POC testing
Hearing loss (intervention within 6 months), Congenital heart dz, Pulse oximetry
Krabbe dz
Sphingolipid breakdown
tx for pompe
ERT
Tx for MPS type 1 and Krabbe dz
Stem cell transplant
NBS review
Serious condition
Good screening test
Intervention
Coordinated systme
Glycine encephalopathy
Lethal condition
DMD
Non-treatable condition
Krabbe
Favored dz
Screening should be
Universal and connected to system that provides education
Screening should NOT be
Driven by tech
Screening is
INvasive and intrusive