Paediatrics Flashcards
What are the three fetal shunts?
Ductus venosus (umbilical vein to inferior vena cava)Foramen ovale (right atrium to left atrium)Ductus arteriosus (Pulmonary artery to aorta)
How can you keep the ductus arteriosus open and when might you want to keep it open?
Prostaglandin infusionWhen there is a cardiac abnormality causing right->left shunt.
What are features of an innocent murmur?
SoftShortSystolicSymptom-lessSituation dependent
What murmur is associated with an atrial septal defect?
Ejection systolic murmur, crescendo decrescendo
What murmur is associated with a PDA?
Machinery murmur of 2nd heart sound
What murmur is associated with Tetralogy of Fallot?
Ejection systolic murmur heard best at LUSE (pulmonary stenosis)
Which congenital heart conditions cause CYANOTIC heart disease?
Tetralogy of FallotTransposition of the great arteries
What murmur is associated with aortic stenosis? What other features are there?
Ejection systolic murmur, crescendo-decrescendo Narrow pulse pressureSlow rising pulseSoft or absent S2 S4
How is aortic stenosis managed?
If asymptomatic -> observeIf symptomatic -> valve replacement
What is the most common complication of aortic stenosis?
Left ventricular outflow tract obstruction
What conditions are associated with pulmonary stenosis?
Tetralogy of FallotWilliam syndromeNoonan syndromeCongenital rubella syndrome
How does pulmonary stenosis present?
Ejection systolic murmur - louder on inspirationOften found incidentallySymptoms can be fatigue, SOB, failure to thrive
What murmur is associated with pulmonary stenosis? What other signs are there?
Ejection systolic murmur loudest in the pulmonary areaPalpable thrillRight ventricular heave due to RV HypertrophyRaised JVP
What are causes of heart failure in: Neonates, infants, and older children?
Neonates = due to obstructed circulation (Hypoplastic left heart syndrome, aortic stenosis, coaractation of the aorta, interruption of aortic arch)Infants = due to high pulmonary blood flow (ventricular septal defect, atrioventricular septal defect, large PDA_Older children (Eisenmenger syndrome, Rheumatic heart Disease, Cardiomyopathy)
Which heart conditions cause a left to right shunt?
ASDVSDPDA
Which heart conditions cause a right to left shunt?
Tetralogy of FallotTransposition of the great arteries
Which type of shunt causes cyanosis?
Right to left
What are signs of heart failure in neonates/infants?
BreathlessnessSweatingPoor feedingRecurrent chest infectionsFailure to thrive
What are symptoms and signs of atrial septal defect?
Symptoms = wheeze, may be often asymptomaticSigns = Ejection systolic murmurFixed, widely split S2
What is seen on CXR in atrial septal defect?
CardiomegalyEnlarged pulmonary arteriesIncreased pulmonary vascular markings
How does a ventricular septal defect present?
If it’s smaller than the aortic valve (<3mm) = asymptomatic, LOUD pan systolic murmur at LLSE, quiet pulmonary S2, CXR = normal. If larger than aortic valve = presents with heart failure, recurrent chest infections, SOFT pan systolic murmur, LOUD pulmonary S2. CXR shows signs of heart failure.
How is a ventricular septal defect managed?
Smaller asymptomatic VSD = close spontaneouslyLarger symptomatic VSD = Surgical repair required
What are signs of a patent ductus arteriosus?
Continuous machinery murmurLeft subclavicular thrillBounding collapsing pulseWide pulse pressureHeaving apex beat
How is a patent ductus arteriosus managed?
In preterm infants can give Indomethacin/Ibuprofen to help close the PDAIf asymptomatic - wait to see if it closes by 1 year If symptomatic - needs closing
What is Eisenmenger syndrome and which conditions typically can cause it?
When a heart condition causing a L to R shunt, eventually causes pulmonary HTN and therefore it becomes a R to L shuntThis leads to cyanosis Causes= ASD, VSD, PDA,TOF
How is Eisenmenger syndrome managed?
Complete heart-lung transplantation required
Which congenital heart condition is associated with Turner syndrome?
Coarctation of the aortaAortic stenosis (due to bicuspid aortic valve)
How does coarctation of the aorta present?
Weak femoral pulsesMid systolic murmurTachypnoeaRadio-femoral delayApical click
How is coarctation of the aorta managed?
If critical, need to keep ductus arteriosus open with prostaglandin infusion whilst awaiting surgery
What are the 4 features of Tetralogy of Fallot?
- Ventricular septal defect2. Right ventricular hypertrophy3. Pulmonary stenosis4. Overriding aorta
How does Tetralogy of Fallot cause cyanosis?
Pulmonary stenosis means that there is higher pressure on R side of heart, this means that there is a R to L shunt through the VSD
How does Tetralogy of Fallot present?
Ejection systolic murmur (due to pulmonary stenosis)Cyanosis”Tet spells” - cyanotic episodes, infant will typically squat
What is seen on CXR in Tetralogy of Fallot?
Boot shaped heart
How is Tetralogy of Fallot managed?
Surgical repair
What is Ebstein’s Anomaly?
A congenital heart defect where the tricuspid valve is set lower than usual, causing the RA to be larger than usual and the RV to be smaller than usual
What are signs of transposition of the great arteries?
Loud single S2 Prominent right ventricular impulse
What does a continuous machinery murmur indicate?
Patent ductus arteriosus
What can an ejection systolic murmur indicate?
Aortic stenosis - LLSE (crescendo-decrescendo)Pulmonary stenosis - Pulmonary areaAtrial septal defect (crescendo-decrescendo)
Aortic stenosis vs. ASD?
Aortic stenosis = narrow pulse pressure, slow rising pulse, soft S2ASD = fixed splitting of S2
What might be seen on an ECG in an ASD?
RBBB
Which condition can cause patients with a DVT to develop a stroke?
Atrial septal defect
What are signs of respiratory distress in children?
Raised RRUse of accessory musclesIntercostal/subcostal recessionsNasal flaringHead bobbingTracheal tugging
What are causes of stridor?
Croup - stridor + barking coughAcute epiglottitis - stridor, drooling, acutely unwellInhaled foreign body - chokingLaryngomalacia
What is the cause of bronchiolitis?
RSV (Respiratory syncytial virus)
How does bronchiolitis present?
Coryzal symptoms - runny nose, watery eyes, sneezingDry coughMild feverWheezeDyspnoeaTachypnoea
When should a child with bronchiolitis be admitted?
Under 3 monthsPre-existing health condition Clinical dehydrationRR > 70Oxygen sats <92%ApnoeasDeep recessionsHead bobbing
How is bronchiolitis managed?
SupportiveSupplementary oxygen if required
Which children are at risk of severe bronchiolitis?
Bronchopulmonary dysplasiaCongenital heart diseaseCystic fibrosis
How to differentiate Asthma vs. Viral induced wheeze?
Viral induced wheeze..Features of viral illness e.g. coryza, feverPresents prior to 3 yearsNo atopy historyOnly occurs during infections
How is viral induced wheeze managed?
1st line = Salbutamol
What is the stepwise management of Asthma in under 5’s?
- SABA (e.g. Salbutamol)2. Low dose ICS or Montelukast3. Add other option4. Refer to specialist
What is the most common bacterial and viral cause of pneumonia in children?
Strep pneumoniaeRSV
How does pneumonia present?
Productive coughFeverTachypnoeaTachycardiaHypotension
How is pneumonia managed in children?
1st line = Amoxicillin2nd line = Macrolide (Clarithromycin, Erythromycin, Azithromycin)
What is croup? What is the most common causative organism?
Upper respiratory tract infection which causes laryngeal oedema, leading to stridorMost common = Parainfluenza virus
How does croup present?
StridorBarking coughLow grade feverCoryzaIncreased work of breathing
When should a child with croup be admitted?
Stridor at restRecessionsAny significant distressTachycardia
How is croup treated?
Single dose oral DexamethasoneOxygen if required
What organism causes epiglottitis?
Haemophilus influenza type B
How does epiglottitis present?
Acute onsetSore throatStridorTripod positionHigh feverDrooling of saliva
What is seen on neck XR in epiglottitis?
Thumb sign
How is epiglottitis managed?
IV CeftriaxoneOxygen
What is Laryngomalacia?
Soft larynxLarynx causes partial airway obstructionCauses chronic stridor on inhalation
How is Laryngomalacia managed?
Problem usually resolves as the larynx matures and grows
What is whooping cough?
URTI caused by Bordatella pertussis
How does whooping cough present?
Sats with coryza symptomsThen - Severe coughing fits, worse at nightInspiratory whoop at end of coughing fit May be vomitingMay be apnoea attacks
How is whooping cough treated?
Supportive careIn first 21 days - can use oral macrolide
What do infants with bronchopulmonary dysplasia receive to reduce infections?
Monthly injection of Palivizumab
What type of inheritance pattern does cystic fibrosis have?
Autosomal recessive
What are the first signs of CF?
Meconium ileusProlonged jaundice
What are features of CF?
Chronic coughThick sputumRecurrent infectionsGreasy stoolsFinger clubbingPancreatic enzyme deficiency
What are common colonisers in CF?
Staph aureusPseudomonas
What is the gold standard diagnostic investigation for CF? What does it show?
Sweat test showing increased chloride levels
How is CF managed?
Chest physioHigh calorie idetPancreatic enzyme supplementationProphylactic flucloxacilin
What are complications of CF?
DiabetesDelayed pubertyMale infertilityNasal polyps
Why are males with CF often infertile?
Absence of the vas deferens
What is primary ciliary dyskinesia?
Autosomal recessive conditionTRIAParanasal sinusitisBronchiectasisSitus invertus
What is abdominal migraine?
Episodes of central abdominal pain lasting more than 1 hourIntense and acute pinInterferes with normal activityAssociated N+V, headache, photophobia, aura
How can abdominal migraine be treated?
Dark, quiet roomParacetamolSumatriptanPropylaxis –> Pizotifen
What is classed as constipation in children?
<3 stools per week (does not apply to exclusively breastfed babies)Rabbit dropping stools
How can you differentiate between primary and secondary constipation?
Secondary constipation is from birth If meconium takes longer than 48 hours to pass, ribbon stools, faltering growth, or vomiting - referral needed
How is primary/idiopathic constipation treated?
First line in children is an osmotic laxative e.g. MovicolIf no response can add a stimulant e.g. Senna +/Lactulose
What is the main cause of reflux in babies?
Immaturity of the lower oesophageal sphincter
How can reflux in babies be managed?
Small, frequent feedsBurp regularlyKeep baby upright after feeding If still problematic can mix Gaviscon with feeds
What is pyloric stenosis?
Hypertrophy and narrowing of the pyloric sphincter (the ring of muscle between the stomach and duodenum)
How does pyloric stenosis present?
Usually presents in 2nd-4th week of lifePeristalsis tries to push food down to the duodenum but it instead ejects upwards Projectile vomiting (non-bilious)May be constipation/diarrhoeaMay be a palpable mass due to hypertrophied pyloric sphincter (often mentioned as olive shaped mass)
What blood gas results are seen in pyloric stenosis?
Low chlorideLow potassiumAlkalosis Due to baby vomiting hydrochloric acid from stomach
What are signs of clinical dehydration in children?
Decreased urine outputSunken eyesDry mucuous membranesTachycardiatachypnoeaReduced skin turgor
What are signs of clinical shock in children?
Decreased consciousnessCold extremitiesPale/mottled skinTachycardiaTachypnoeaWeak peripheral pulsesProlonged cap refillHypotension
How to calculate replacement fluids in children?
(% dehydration x kg x 10) = mls of fluids
How to calculate maintenance fluids in children?
First 10kg = 100ml/kgNext 10kg = 50ml/kgAfter that = 20ml/kg
How to calculate resuscitation fluids in children?
Resuscitation fluids = 20ml/kg EXCEPT IN….neonates, DKA, septic shock, trauma, cardiac pathology (heart failure) = 10ml/kg
What is Hirschsprung’s disease?
A congenital condition where the nerve cells of the myenteric plexus are absent = absence of parasympathetic ganglion cells along a section of the bowel Aganglionic section does not relax - causing obstruction of the bowel
What conditions are associated with Hirschsprung’s disease?
Down’s syndromeNeurofibromatosisMEN II
How does Hirschsprung’s disease present?
Delay in passing meconiumIn older children - constipation, vomiting, abdominal pain
What is the gold standard diagnosis for Hirschsprung’s disease?
Rectal biopsy
What is intussusception?
An invagination of a portion of the bowel
How does intussusception present?
Severe colicky abdominal painRED CURRANT JELLY STOOLSausage shaped mass in the RUQPale, unwell childVomiting
What is seen on abdominal ultrasound in intussusception?
Target shaped mass
How is intussusception managed?
Reduction via radiology
What is biliary atresia?
A congenital condition where a section of the bile duct is narrowed or absent , preventing the excretion of conjugated bilirubin
How does biliary atresia present?
Presents in first few weeks of life with prolonged jaundiceDark urinePale stools
How is biliary atresia diagnosed?
Raised conjugated billirubinERCP Cholangiogram
How are umbilical hernias in children managed?
Common in neonates – usually resolve by 3 yearsIf not resolved by 5 years can consider surgical repair Note: Umbilical hernias are more common in Down syndrome
What is congenital diaphragmatic hernia?
Herniation of the abdominal viscera into the chest cavity due to incomplete formation of the diaphragm
How does congenital diaphragmatic hernia present?
Pulmonary hypoplasia + hypertension| Respiratory distress shortly
What are causes of cerebral palsy?
Antenatal:Maternal infectionTrauma during pregnancyPerinatal:Birth asphyxiaPreterm birthPostnatal:MeningitisSevere neonatal jaundiceHead injury
What are the types of cerebral palsy?
Spastic (hypotonia - LMN)Dyskinetic (hyper and hypotonia (damage to basal ganglia)Ataxic (problems with co-ordination - damage to cerebellum)Mixed
How can cerebral palsy present?
failure to meet milestonesincreased/decreased tonehand preference <18mproblems with co-ordination/speech/walkingLearning difficulties
What is hydrocephalus?
Build up of CSF in the brain and spinal cord
What is the most common congenital cause of hydrocephalus? What are other causes?
Most common= Aqueductal stenosis Other: Arachnoid cystsArnold-Chiari MalformationChromosomal abnormalities
What is aqueductal stenosis?
Cerebral aqueduct that connects the 3rd and 4th ventricles = stenosed
How does hydrocephalus present?
Rapidly increasing head circumferenceBulging fontanellePoor feedingVomitingPoor toneSleepiness
How is hydrocephalus managed?
Ventriculoperitoneal shunt
What are complications of a ventriculoperitoneal shunt?
InfectionBlockageExcessive drainageIntraventricular haemorrhageOutgrowing them
What is craniosynostosis?
Skull sutures close prematurely - results in a normal head shape
What is plagiocephaly and brachycephaly?
Plagiocephaly = flattening of one area of baby’s headBrachycephaly = flattening of back of baby’s head
How is craniosynostosis investigated?
Skull XR
How does Duchenne’s muscular dystrophy present?
Weakness in pelvic musclesGower’s sign +ve (use hands on legs to help them stand up)X-linked recessive
What is the most common ocular malignancy in children ad how does it present?
RetinoblastomaLoss of red reflexStrabismusVision problems
What is the most common causative organism of scarlet fever?
Strep pyogenes
How does scarlet fever present?
Fine, pinhead erythema Rough sandpaper like texture to the skinStrawberry tongueFever, malaise, lethargySore throatCan be febrile seizures
How is scarlet fever managed?
Penicillin V - need a prolonged course of 10 days
How long does a child with scarlet fever need to be kept off school?
Until 24 hours after commencing Abx
What are complications of scarlet fever?
Otitis mediaRheumatic feverAcute glomerulonephritis
What is the most common bacterial cause of otitis media?
Strep pneumoniae
What is glue ear?
Acute otitis media with effusionMiddle ear becomes full of fluid and leads to hearing lossDue to blockage of the Eustachian tube