Zusammenfassung der Ressource
A Child with
Abnormal Facies
- Demographics
- 41-year old multiparous woman Baby
Salim delivered with Peculiar facial
features and Heart murmurs
- Chromosomal
Abnormality suspected
- Chromosomal
Abnormalities
- Structural
- Duplications
- Translocations
- Robertsanian
- Reciprocal
- Deletions
- Inversions
- Substitutions
- Numerical
- Polyploidy
- Triploidy
- Tetraploidy
- An extra set of the
entire genome
- Aneuploidy
- Monosomy
(2n-1)
- Turner Syndrome
(45,X) in females
- Trisomy
(2n+1)
- Trisomy 21 (Down syndrome)
3 copies of chromosome 21
- Missing or having an
extra chromosome in
a pair
- Causes
- Genetic
- Errors in meiosis
or mitosis
- Environmental
- Infectious
Agents Radiation
Chemical agents
Nutritional
deficiencies
Hormones
Health state
- Maternal Age
- If >35 , higher
chance of
child with
chromosomal
abnormality
- Identified
by
- Karyotyping
- Test to examine chromosomes
and identify genetic problems
that cause disease
- FISH
(Fluorescent
in situ
hybridisation
analysis)
- Test that can detect very small
pieces of chromosomes that are
missing or extra
- Premarital Screening
- Health counseling and advice before marriage
Diagnose undetected heredity conditions
Protect community & unborn child from burdens
Limit spread of certain disease ,raise awareness
& reduce pressure over health institutions
- For
- HIV
- Thalassemia
- Sickle cell anemia
- Hepatitis B &C
- Genetic Counseling
- In case of
- A family history of genetic condition
Pregnancy after age 35 ,Already
have a child with genetic condition
Have had an ultrasound that
suggests problem
- What counselors do?
- Help identify risk of inherited disorder
Explain inheritance Patterns ,suggest
testing , lay out results and provide
support
- Antenatal tests
- Routine tests
- Blood tests
- Blood group, Rhesus disease, Anemia , Diabetes , HIV, Hepatitis B
- Urine tests
- Protein levels
- Screening Tests
- First trimester
- Beta HCG, PAPP-A In blood tests
- Second Trimester
- Maternal serum screening for Beta
HCG, AFP , Inhibin A ,Estriol
- Ultrasound
- Diagnostic tests
- Amniocentesis
- Chorionic Villi Sampling
- Cordocentesis
- Diagnostic Ultrasound
- Down Syndrome
- Types
- Trisomy 21 (most common)
- Mosaicism: Extra copy of chromosome 21 in some cells
- Translocation between chromosome 21 & chromosome 14 or 15
- Signs & Symptoms
- Physical : Flat facial features ,Small head & ears,short neck &
bulging tongue , Brushfield spots,deep groove between first &
second toes ,short hands & fingers,hypotonia, upward slanting
eyes
- Mental & Behavioral : Impulsive behaviour, poor judgement,
short attention span,low IQ (below 70 , intellectual
disability or MR)
- Diagnosis
- Antenatal
- Postnatal based on
physical features
- Risk Factors
- Advanced maternal age
Having had one child with
Down Syndrome,Carrying
genetic translocation
- Treatment
- No cure, speech
therapy,Occupational
therapy, exercise,
special education
- Sharjah City of
Humanitarian
Services
- Local non-profit
organization aims
to advance Arab
family & develop
social services it
needs