Paeds Flashcards
By when should a child be able to walk?
12 months
What is the limit age for walking?
18 months
By when should primitve reflexes be diminished?
4-6 months
Persistent primitive reflexes can be a sign of which condition?
cerebral palsy
By when should a baby be able to sit unsupported?
6 months
By when should a child be able to make a mature pincer grip?
10 months
When should a child start to express 2-3 words in addition to mama and dada?
12 months
When should a child be able to talk in sentences?
2.5-3 yrs
At what age should a child start smiling?
6 weeks
At what age do children start playing with someone else interactively?
3 yrs
Up to which age is it normal to be able to see a quint in a child?
12 weeks
What are some genetic causes of severe visual impairment?
congenital cataracts
albinism
retinal dystrophy
retinoblastoma
What is the most common cause fo squint?
misalignment of the visual axes due to refractive errors
What tests can be done to detect a squint?
Corneal light reflex test
cover test
What are the refractive errors seen in childhood?
hypermetropia
myopia
amblyopia
How can you treat strabismus?
Conservative - glasses and orthoptic exercises
Surgery - resection muscle to strengthen, recession of muscle to weaken
Botox injection
What are the causes for conductive hearing loss in children?
congestion behind eardrum (cold) glue ear ear wax middle ear infection - otitis media perforated ear drum structural abnormality of outer ear
What are the causes of sensorineural hearing loss?
genetic
perinatal - trauma, infection, hypoxia at birth
congenital infection - rubella, CMV
meningitis - pneumococcus can cause ossification of the cochlea
premature babies are at higher risk
What is the main risk factor for Down’s syndrome?
Advanced maternal age
What are the 3 mechanisms by which trisomy 21 can arise?
- non-disjunction
- unbalanced Robertsonian translocation
- gonadal mosaicism
What are some classical appearance features seen in someone with Down’s syndrome?
flat bridge of nose epicanthic folds flat occiput wide space between the eyes protruding tongue single palmar crease loose nape of neck low set ears space between halux and second toe
What are some medical conditions that people with Down’s syndrome are more at risk of?
complete atriventricular septal defect hypothyroidism duodenal atresia hypotonia later in life - Alzheimer's
How is Down’s syndrome screened for antenatally?
risk score calculated based on serum markers and nuchal translucency
diagnostic testing offered if high risk score - amniocentesis or chorionic villus sampling
What are some clinical features associated with Edward’s syndrome (trisomy 18)?
low birthweight prominent occiput micrognathia short sternum flexed, overlappying fingers cardiac and renal malformations microcephaly 90% die in first year
What are some clinical features of Patau syndrome (trisomy 13)?
holoprosencephaly scalp defects microphthalmia cleft lip and palate polydactyly not compatible with life
What are some clinical features of Turner’s syndrome?
45, XO female short stature webbed neck infertility/primary amenorrhoea delayed puberty wide spaced nipples
What congenital heart defect is associated with Turner’s syndrome?
Coarctation of the aorta
How is Turner’s syndrome managed?
GH therpay
oestrogen replacement for development of secondary sexual characteristics
infertility - IVF
What is Kilnefelter’s syndrome?
Male inherits extra copy of X chromosome so is 47, XXY instead of 46, XY
What are the features of Klinefelter’s?
male tall stature slender with wide hips infertility delayed puberty gynaecomastia
How do you manage Klinefelter’s?
testosterone replacement
1 injection/month for life
What is fragile X syndrome?
inherited form of learning disability due to a trinucleotide repeat expansion on the X chromosome
females have protection from other X chromosome so have milder phenotype
What are the clinical features of fragile X syndrome?
cocktail personality - happy, bouncy macrocephaly large ears learning difficulties/autism joint laxity large testes hypotonia mitral valve prolapse
How would a diagnosis of fragile X be confirmed?
FISH testing - fluorescence in situ hybridisation
What is DiGeorge syndrome?
Abnormal brachial arch development leading to problems with the heart, thymus and palate.
What are the clinical features of DiGeorge syndrome?
Catch 22
Cardiac
Abnormalities
Thymus hypoplasia (T cell dysfunction –> primary immune def)
Cleft palate
Hypocalcaemia
22- chromosome 22 material deletion defect
What types of cardiac abonrmalities are seen in DiGeorge syndrome?
truncus arteriosis tetralogy of Fallot interrupted aortic arch coarctation vascular ring around trachea --> stridor
What is Noonan’s syndrome?
look like boy version of Turner's short stature webbed neck ptosis hypothyroidism pulmonary stenosis hypogonadism
What is Marfan’s syndrome?
A connective tissue disorder caused by fibrillin deficiency
What are some clinical features of Marfan’s syndrome?
Arachnodactyly - spider fingers aortic dilatation --> aneurysm --> dissection (echo!) lens dislocation long arms and legs high arched palate hypermobile joints
What type of connective tissue abnormality is associated with Ehler-Danlos syndrome?
Elastin defect - collagen abnormalities
What are the signs and symptoms of Ehler-Danlos syndrome?
Stretchy skin hyperflexible thumb excessive bruising tissue fragility brain aneurysms cigarette paper scars poor healing
WHat is the risk that a sibling of a child affected with an autosomal recessive condition is a carrier?
2 in 3 carrier risk for unaffected siblings = 66%
What is the population carrier risk for CF?
1 in 25
Give some examples of autosomal dominant conditions.
adult polycystic kidney disease familial hypercholesterolaemia Marfan's syndrome Huntington's disease Some cancer - BRCA - ovarian, breast
Give some examples of X-linked recessive conditions.
Duchenne’s and Becker’s muscular dystrophies
some types of albinism
haemophilia A
fragile X syndrome
What is the chromosomal abnormality in Prader-Willi syndrome?
Chromosome 15
2 copies from MUM or abnormal copy from dad
What are the clinical features of Prader-Willi syndrome?
Hypotonia
learning difficulties
obesity (due to hyperphagia)
small genitalia
What is the chromosomal abnormality in Angelman’s syndrome?
Chromosome 15
2 copies from DAD or abnormal copy from mum
What are the clinical features of Angelman’s syndrome?
severe learning difficulty ataxia broad based gait epilspey excessively happy - unprovoked laughing and clapping microcephaly
What are the congenital infections to be aware of?
TORCHS: toxoplasmosis other (HIV) rubella cytomegalovirus syphilis
or CHRiST: CMV, HSV, rubella, syphilis, toxoplasmosis