Paeds additional Flashcards
what is Hirschsprung’s disease
aganglionic segment of bowel due to a developmental failure of the parasympathetic Auerbach and Meissner plexuses.
condition associated with hirschsprung’s disease
- downs syndrome (MC)
- neurofibromatosis
- Waardenburg syndrome (a genetic condition causing pale blue eyes, hearing loss and patches of white skin and hair)
- Multiple endocrine neoplasia type II
presentation of hirschsprung’s disease
- Delay in passing meconium (more than 24 hours)
- Chronic constipation since birth
- Abdominal pain and distention
- Vomiting
- Poor weight gain + failure to thrive
Mx of Hirschsprung’s disease
- Ix= AXR and rectal biopsy
- initially: rectal washouts/bowel irrigation, fluid resus, IV abx
- definitive management: surgical removal of affected segment of the colon
Features of innocent murmurs
ALL S
- Soft
- Short
- Systolic
- Symptomless
- Situation dependent (the murmur gets quieter with standing, or only appears when the child is unwell or feverish)
pansystolic murmurs
- Mitral regurgitation, heard loudest in the mitral area
- Tricuspid regurgitation, heard loudest in the tricuspid area
- Ventricular septal defect, heard loudest at the left lower sternal border
causes of ejection systolic murmurs
- Aortic stenosis
- Pulmonary stenosis
- Hypertrophic obstructive cardiomyopathy
Heart defects that can cause a right-to-left shunt, and therefore cyanotic heart disease, are:
- ASD
- VSD
- PDA
- Transposition of the great arteries
Causes of anaemia in infancy
Physiologic anaemia = MC
The other causes of anaemia in infants are:
- Anaemia of prematurity
- Blood loss
- Haemolysis
- Twin-twin transfusion
Haemolysis is a common cause of anaemia in infancy. There are a number of causes of haemolysis in a neonate:
- Haemolytic disease of the newborn (ABO or rhesus incompatibility)
- Hereditary spherocytosis
- G6PD deficiency
what is physiological anaemia of infancy
normal dip in haemoglobin around 6-9 weeks of age in healthy term babies
causes of anaemia of prematurity
- Less time in utero receiving iron from the mother
- RBC creation cannot keep up with rapid growth in the first few weeks
- Reduced erythropoietin levels
- Blood tests remove a significant portion of their circulating volume
test to check for immune haemolytic anaemia
direct Coombs test
causes of anaemia in older children
- iron deficiency
- blood loss
Rarer causes
- sickle cell
- Thalassaemia
- Leukaemia
- Hereditary spherocytosis
- Hereditary eliptocytosis
- Sideroblastic anaemia
Symptoms specific to iron deficiency anaemia:
- Pica = dietary cravings for abnormal things such as dirt
- Hair loss
Sx of anaphylaxis
- Urticaria, itching, Angio-oedema, abdo pain, swelling around lips and eyes
- SOB
- Wheeze
- Stridor
- Tachycardia
- Lightheadedness
- Collapse
how to confirm anaphylaxis
mast cell tryptase within 6hrs
signs and sx of appendicitis
- centro abdo pain then RIF pain
- McBurney’s point (1/3 ASIS to umbilicus)
- N&V
- fever
- guarding and rebound tenderness
- Rovsing’s sign
mx of acute asthma
- oxygen <94%
- SABA (nebulised mod-severe, spacer mild-mod)
- nebulised ipratropium bromide
- oral prednisolone, IV if unable to swallow
- oral LTRA
- nebulised magnesium sulphate for severe asthma
Can consider
7.IV salbutamol
8. IV aminophylline
9. IV magnesIum sulphate
CALL SENIOR
How to diagnose asthma
> 5 y/o spirometry
FeNO
Peak Flow
Direct bronchial challenge test
steroids for eczema (mild, moderate, potent)
- Mild: Hydrocortisone 0.5%, 1% and 2.5%
- Moderate: Eumovate (clobetasone butyrate 0.05%)
- Potent: Betnovate (betamethasone 0.1%)
- Very potent: Dermovate (clobetasol propionate 0.05%)
most common organism in bacterail infection of eczema
staph aureus
what is eczema herpeticum caused by
herpes simplex virus (HSV) or varicella zoster virus (VZV)
HSV1 most common
presentation of eczema herpeticum
widespread, painful, vesicular rash
+ systemic symptoms such as fever, lethargy, irritability and reduced oral intake.
There will usually be lymphadenopathy
what is biliary atresia
section of the bile duct is either narrowed or absent –> cholestasis –> accumulation of conjugated bilirubin
presentation of biliary atresia
- jaundice due to high conjugated bilirubin levels shortly after birth lasting >14 days post birth
Ix for biliary atresia
conjugated and unconjugated bilirubin (can conj but just can’t excrete it)
what is bronchiolitis caused by
Respiratory syncytial virus (RSV)
presentation of bronchiolitis
- <1 yr, usually under 6 months
- particularly in ex-premature babies with chronic lung disease.
- Coryzal symptoms: VRUTI
- Signs of respiratory distress
- Dyspnoea
- Tachypnoea
- Poor feeding
- Mild fever (under 39ºC)
- Apnoeas
- Wheeze and crackles
signs of respiratory distress
- tachypnoea
- head bobbing
- nasal flaring
- use of accessory muscles
- intercostal and subcostal recessions
- tracheal tugging
- cyanosis
- abnormal airway noises
difference between wheeze, grunting and stridor
- Wheezing= whistling sound caused by narrowed airways, during expiration
- Grunting= exhaling with the glottis partially closed to increase PEEP
- Stridor= high pitched inspiratory noise caused by obstruction of the upper airway e.g. croup
progression of bronchiolitis
coryzal sx day 1-2
worst sx day 3-4
then improve, lasts 7-10 days
when to admit with bronchiolitis
- < 3months
- 50 – 75% reduced feed
- Clinical dehydration
- RR > 70
- O2 < 92%
- Moderate to severe respiratory distress
- Apnoeas
- Parents not confident in their ability to manage at home
prevention of bronchiolitis
Pavilizumab monthly injection
Causes of cerebral palsy
Antenatal:
- Maternal infections
- Trauma during pregnancy
Perinatal:
- Birth asphyxia
- Pre-term birth
Postnatal:
- Meningitis
- Severe neonatal jaundice
- Head injury
which parts of the brain are affected by different types of Cerebral palsy
Spastic- UMN
Dyskinetic- Basal Ganglia and substatntia nigra
Ataxis- Cerebellum
signs and sx of cerebral palsy
- Failure to meet milestones
- Increased or decreased tone, generally or in specific limbs
- Hand preference < 18 months = KEY
- Problems with coordination, speech or walking
- Feeding or swallowing problems
- Learning difficulties
complications of cerebral palsy
- Learning disability
- Epilepsy
- Kyphoscoliosis
- Muscle contractures
- Hearing and visual impairment
- Gastro-oesophageal reflux
Causes of constipation
- Functional
- Cystic fibrosis
- Hirschsprung’s disease
- Hypothyroidism
- Spinal cord lesions
- Sexual abuse
- Intestinal obstruction
- Anal stenosis
- Cows milk intolerance
age group for croup
6months- 2 years
cause of croup
parainfluenza virus
sx of CF
- meconium ileus
- failure to thrive
- chronic cough
- thick sputum
- recurrent resp infections
- steatorrhoea
- child salty when parent kisses
- abdo pain and bloating
- finger clubbing
- nasal polyps
how to diagnose CF
- Newborn blood spot testing
- The sweat test is the gold standard. Chloride conc >60mmol/L
- Genetic testing for CFTR gene
key colonisers in CF
Staphylococcus aureus- MC
Haemophilus influenza
Klebsiella pneumoniae
Escherichia coli
Burkhodheria cepacia
Pseudomonas aeruginosa- important
colonisers that exempt pt with CF from lung transplant
- burkholderia cepacia
- ?mycobacteria abscessus
conditions screened for in CF
- diabetes
- osteoporosis
- vitamin D deficiency
- liver failure
Mx of CF
- CFTR modulators (Kaftrio)
- chest physio
- vaccines (pneumo, influ, varicella)
- Nebulised DNase
- Creon
- high calorie diet
- prophylactic fluclox
- lung transplant