Paediatrics Flashcards
What organism causes roseola infantum?
human herpesvirus 6 (HHV6)
What is the typical presentation of roseola?
- high fever, mild pharyngitis, lymphadenopathy
- -> fever improves, develop rose-pink non-pruritic macular rash
- exanthem prominent over trunk, thighs + buttocks - macules may be surrounded by haloes
- Nagayama spots - papular enanthem on uvula/soft palate
- diarrhoea common
- febrile convusions (10-15%)
What speech milestone do you typically expect babies to meet by each of hte following ages:
- 3 months
- 6 months
- 9 months
- 12 months
- 12-15 months
- 2 years
- 2.5 years
- 3 years
- 4 years
- 3 months: quietens to parents voice, turns to sound, squeals
- 6 months: double-syllable sounds ‘erleh’ ‘adah’
- 9 months: ‘mama’ ‘dada’, understands no
- 12 months: knows/responds to name
- 12-15 months: knows 2-6 words (refer at 18 months)
- 2 years: can string 2 words together, points to parts of the body
- 2.5 years: knows 200 words
- 3 years: talks in 3-5 word sentences, can say ‘who’ and ‘what’ sentences, colours, counts to 10
- 4 years: can ask ‘why’ ‘when’ and ‘how’ sentences
At what ages is the meningococcal B vaccination given?
- 2 months
- 4 months
- 12-13 months
What 9 conditions are screened for on the neonatal blood spot test?
- congenital hypothyroidism
- cystic fibrosis
- Sickle cell disease
- Phenylketonuria
- Medium chain acyl-coA dehydrogenase deficiency (MCADD)
- Maple syrup urine disease (MSUD)
- Isovaleric acidaemia (IVA)
- Glutamic aciduria type 1 (GA1)
- Homocystinuria (pyridoxine unresponsive) (HCU)
What is the most important investigation for screening for complications of Kawasaki disease?
Echocardiogram - can cause coronary artery aneurysms - all patients should have ECHO at diagnosis, 1-2 weeks and 6-8 weeks after treatment
What are 3 aspects of the management of Kawasaki disease?
- high dose aspirin
- IV immunoglobulin
- ECHO - look for coronary aneurysms
In which age group should peak expiratory flow be attempted in children?
a children >5 years
How should bronchodilator therapy be delivered in children with acute exacerbation of asthma?
spacer; if <3 years, close-fitting mask
give 1 puff every 30-60 seconds up to maximum of 10 puffs
What steroid dose should be given to children with an acute exacerbation of asthma?
- age 2-5 years: prednisolone 20mg OD
- > 5 years: 30-40mg OD
- (1-2mg/kg OD max 40mg)
What age group is affected by bronchiolitis?
aged <2 years - peak incidence 3 - 6 months
What is the first sign of puberty in boys?
Testicular growth (>4mls)
What is the first sign of puberty in boys?
Testicular growth (>4mls)
What investigation should be organised and when for children presenting with UTI <6 months old?
Ultrasound - within 6 weeks (VUR)
Should children >6 months have further investigation if they present with UTI?
Imaging not required unless recurrent or features of atypical infection:
- seriously ill
- poor urine flow
- abdominal or renal mass
- raised creatinine
- sepsis
- failure to respond to suitable abx within 48h
- non E. coli cause
What is the investigation of choice to look for renal scarring after UTI and when is it done?
Static radioisotope scan - E.g DMSA. Should be done 4-6 months after initial infection
What is the investigation of choice to look for vesicoureteric reflux in paediatric patients with UTI?
Nifty rating cystourethography
What virus causes measles?
RNA paramyxovirus
When is the a) infective period and b) incubation period of measles?
a) infective = from prodrome until 4 days after rash onset
b) incubation period = 10-14 days
What is the prodromal phase of measles?
irritable, conjunctivitis, cough, coryza (3 Cs), fever; also develop Koplik’s spots before rash onset - white spots (grains of salt) on buccal mucosa
Describe the rash seen in measles
- starts behind the ears, then to whole body
- discrete maculopapular rash becoming blotchy and confluent
- desquamation that typically spares the palms + soles may occur after a week
What is the management of measles?
conservative; admit if immunosuppressed/ pregnant; notifiable disease -> PHE
What is the most common complication of measles?
otitis media
What are 9 complications of measles?
- otitis media
- pneumonia
- encephalitis - 1-2 weeks after onset
- subacute sclerosing panencephalitis - 5-10 years
- febrile convulsions
- keratoconjunctivitis / corneal ulceration
- diarrhoea (seen in 10%)
- increased incidence of appendicitis
- myocarditis
What is the management if a child not immunised against measles comes into contact with someone with measles?
offer MMR vaccination within 72h
What are 3 critical referral points for children not meeting milestones?
- doesn’t smile at 10 weeks
- can’t sit unsupported at 12 months
- cannot walk at 18 months
At what point in child development is hand preference abnormal?
<12 months
What early intervention services can all children with developmental delays benefit from?
- occupational therapy
- speech and language therapy
- physiotherapy
- educational support
What are 5 types of acyanotic congenital heart disease?
- ventricular septal defects (VSD)
- atrial septal defect (ASD)
- patent ductus arteriosus (PDA)
- coarctation of the aorta
- aortic valve stenosis
What is more common of VSDs/ ASDs and which is more commonly prescribed in adult patients?
VSDs more common; ASDs are more common as a new diagnosis in adults as usually present later
What are 3 causes of cyanotic congenital heart disease?
- tetralogy of Fallot
- transposition of the great arteries (TGA)
- tricuspid atresia
(all begin with T)
At what age do patient’s with tetralogy of Fallot tend to present?
1-2 months of age
When does transposition of the great arteries tend to present?
at birth
What is more common, transposition of the great arteries or tetralogy of Fallot?
tetralogy of Fallot, although TGA more commonly diagnosed at birth
What are 3 key diagnostic features of clubfoot (talipes equinovarus)?
Foot is:
1. Inverted
2. Plantar flexed
3. Not passively correctable
Which gender does talipes equinovarus have a predilection for?
Clubfoot is twice as common in MALES
What proportion of talipes equinovarus are bilateral?
50%
What are 5 associations of clubfoot (talipes equinovarus)?
- Spina bifida
- Cerebral palsy
- Edwards syndrome (trisomy 18)
- Oligohydramnios
- Arthrogryposis
How is a diagnosis of clubfoot made?
Clinical - not passively correctable
How is a diagnosis of bronchiolitis made?
- clinical diagnosis - no diagnostic studies usually necessary
- coryzal prodrome, tachypnoea, chest recession, wheeze / crackles, fever, poor feeding, apnoea
- immunofluorescence of nasopharyngeal secretions may show RSV
If CXR is performed in bronchiolitis, what may be seen?
hyperexpansion, peribronchial thickening, infiltrates (diffuse interstitial infiltrates to segmental or lobar consolidation)
When do bronchiolitis symptoms peak?
3-5 days after onset
What are 4 indications for hospital admission in bronchiolitis?
- persistent hypoxaemia
- tachypnoeia impeding oral feeding / hydration
- apnoea
- concern for impending respiratory failure
What are the indications for ribavirin in bronchiolitis?
severe RSV bronchiolitis
immunodeficiency
underlying chronic lung disease
(routine use not recommended)
What type of organism is most commonly associated with acute otitis media?
viral pathogens e.g. RSV + rhinovirus
What are 5 viral pathogens associated with AOM?
- RSV
- rhinovirus
- adenovirus
- influenza virus
- parainfluenza virus
What are 3 most common bacterial organisms that cause AOM?
- streptococcus pneumoniae
- haemophilus influenzae
- moraxella catarrhalis
What are 9 risk factors for AOM?
- children - horizontal, short eustachian tubes
- male
- smoking
- daycare / nursery attendance
- formula feeding
- craniofacial abnormalities
- dummy use
- GORD
- prematurity
What is bullous myringitis?
blisters on the TM caused by Mycoplasma pneumoniae
What are the indications for admission for AOM?
- < 3 months with fever >38
- complications suspected: meningitis, mastoiditis, facial nerve paralysis
+ consider: children <3 months, 3-6 months >39, systemically very unwell
What are 5 serious complications of AOM?
- mastoiditis
- meningitis
- intracranial abscess
- sinus thrombosis
- facial nerve paralysis
What is the usual prognosis for AOM?
without abx, symptoms usually improve within 24h in 60% of children + most recover within 3 days
What type of metabolic abnormality occurs in pyloric stenosis?
hypochloraemic, hypokalaemic metabolic alkalosis
What is the investigation of choice for pyloric stenosis?
ultrasound
What is pyloric stenosis?
hypertrophy of the smooth muscle of the antrum and pylorus of the stomach
When does pyloric stenosis typically present?
1st week of life - 3 months
What is the management of pyloric stenosis?
Ramstedt’s or laparoscopic pyloromyotomy
What does the presence of lanugo in a newborn indicate?
sign of premature birth
What is the management of an acute asthma exacerbation which is mild-moderate in chidlren?
- beta-2-agonist via spacer for child (face mask if <3y) - 1 puff every 30-60s for up to 10 puffs
- steroid therapy for all children for 3-5 days
What are 4 causes of Kayser-Fleischer rings?
- Wilson’s disease
- Cholestasis
- Primary biliary cirrhosis
- Cryptogenic cirrhosis
What are different terms for CMPI and CMPA?
Delayed/non-IgE mediated and immediate/IgE mediated
How is CMPI/CMPA diagnosed?
Of the clinical
- skin prick / patch testing
- total IgE and specific IgE (RAST) for CMP
What is the management of CMPA/CMPA?
- if mild-moderate - extensive hydrolysed formula
- second line or severe - amino acid-based formula
What is the management of CMPI/CMPA if breastfed?
Continue breastfeeding, exclude cows milk from maternal diet (consider calcium supplements); EH milk until 12 months and for at least 6 months
What organism causes croup?
Parainfluenza virus
Which age group is affected by croup?
6 months to 3 years
Which season is croup more common?
Autumn
What key features differentiate mild, moderate and severe stridor?
- mild: no stridor, no intercostal recession, child E+D and playing
- moderate: easily audible stridor at rest, suprasternal and eternal wall retraction, no or little distress to child
- severe: distress, agitation, lethargy, restless, tachycardia
What are 4 situations when children with croup should be admitted?
- all cases moderate or severe
- < 6 months old
- upper airway abnormalities - down’s, laryngomalacia
- uncertainty about diagnosis
What are 4 situations when children with croup should be admitted?
- all cases moderate or severe
- < 6 months old
- upper airway abnormalities - down’s, laryngomalacia
- uncertainty about diagnosis
How is a diagnosis of croup made?
Clinical diagnosis
What will CXR show in croup if performed?
PA film will show subglottic narrowing (steeple sign)
[vs acute epiglottis - lateral view shows swelling of epiglottis - thumb sign]
What’s the management of croup?
Single dose dexamethasone 0.15mg/kg
High flow O2 and nebuliser adrenaline if needed
What are 6 steps if a child is found unresponsive?
- Shout for help
- Open airway
- Look, listen feel for breathing
- 5 rescue breaths - BEFORE compressions
- Check for brachial (infants) or femoral pulse
- Chest compressions 15:2
What is the rate of chest compressions for infants and children?
100-120 per minute for infants and children
What is the site and depth of chest compressions for infants and children?
Lower sternum; 1/3 depth of chest - 4cm for infants, 5cm for children
What is the management of all children with purpura/ petechiae?
Admit immediately under paediatrics - exclude meningococcal sepsis and acute lymphoblastic leukaemia (ALL)
What is the commonest intra-abdominal tumour of childhood?
Wilm’s nephroblastoma
What is Wilms’ nephroblastoma?
abnormal proliferation of metanephric blasema cells (believed primitive embryologic cells of the kidney)
What are 2 syndromes that Wilms’ nephroblastoma is associated with?
- Beckwith-Wiedemann syndrome
- WAGR syndrome (Wilms, Aniridia, GU malformations, Retardation)
What is the mean age of diagnosis of Wilms’ tumour?
3.5 years
What is the typical presentation of Wilms’ tumour?
- abdominal mass - commonest
- abdominal pain
- hypertension
- fever caused by tumour necrosis
- haematuria
- anaemia
What is the treatment for Wilms’ tumour?
highly treatble involving multimodal therapy (surgery, radiation, chemotherapy)
What is facioscapulohumeral muscular dystrophy?
muscle involvement in face, progresses to shoulder girdle, humeral muscles + abdominal muscles, then anterolateral compartment of leg. very slow progression of weakness.
When does facioscapulohumeral muscular dystrophy usually present?
first and second decades of life, but may be any age
What is the genetic inheritance pattern of facioscapulohumeral muscular dystrophy?
dominant
What is the classical presentation of facioscapulohumeral muscular dystrophy?
- initial weakness in orbicularis oculi, mouth and cheek - difficulties whistling, drinking through a straw, blowing balloons
- eyes may remain open when asleep / can’t screw eyelids to bury lashes
- winging of scapula (more lateral than normal) - characteristic, due to weakness of thoracoscapular muscles
What are Forchheimer spots and when are they seen?
- small red spots or petechiae
- on soft palate
- seen in patients with rubella, measles and scarlet fever
What are Koplik’s spots?
white spots on buccal mucosa opposite lower first and second molars - pathognomonic for measles
When do Koplik spots occur in relation to the measles rash?
seen prior to eruption of rash
What is the presentation of pinworm infection?
pruritus ani + pruritus vulvae, restlessness during sleep, excoriation or erythema of perineum, vulvae, or both
How does pinworm infection occur?
faecal-oral contamination via fomites (toys, clothes); worms live in intestinal lumen, female worm migrtes to rectum after copulation and then migrates to perineum (often at night) to release eggs
Which age group is typically affected by pinworm?
5-9 years (but can be all ages)
What pathogen causes pinworm?
nematode - Enterobius vermicularis
How is a diagnosis of pinworm infection made?
visual sighting of worms or using selotape against perineum at night or morning before bathing to capture eggs + examined under microscope
What is the treatment of pinworm infection?
mebendazole >2 years (single oral dose, repeated after 2-3 weeks) - treat all family together if possible
What is the commonest cause of jaundice in the first day of life?
Haemolysis - Rhesus or ABO incompatability
What proportion of babies born at term develop jaundice in the first week of life?
60%
How is neonatal jaundice broken down into 3 groups based on timing?
- first 24h
- 2-14 days
- jaundice after 14 days (prolonged)
What are 7 causes of jaundice int he first 24 hours?
ALWAYS PATHOLOGICAL
1. rhesus haemolytic disease (commonest)
2. ABO haemolytic disease
3. hereditary spherocytosis
4. glucose-6-phosphodehydrogenase
5. TORCH infections
6. increased haemolysis e.g. due to haematoma following ventouse delivery
7. enzyme deficiencies: Crigler-Najjar syndrome, Dubin Johnson, Gilbert’s
What is the commonest cause of jaundice in the newborn age 2-14 days?
mostly phsyiological / breastmilk jaundice
will be unconjugated
What causes physiological neonatal jaundice age 2-14 days?
- fetal Hb has shorter lifespan
- broken down at higher rate
- newborn liver can’t keep up
peaks on day 3-5 then decreases
What is breastmilk jaundice of the neonate?
- prolongation of physiological jaundice in breastfed babies
- mechanism unknown - possible reasons include inhibition of hepatic bilirubin excretion
peaks day 7-15
What are 9 causes of pathological jaundice >14 days?
- sepsis
- bruising
- galactosemia
- hereditary fructose intolerance
- A1AT deficiency
- hypothyroidism
- Gilbert’s syndrome
- Crigler-Najjar syndrome
- Congenital obstruction / malformation of biliary system e.g. biliary atresia
- congenital infections - TORCH