Paediatrics 1 Flashcards
Respiratory Cardiology Psychiatry Rheumatology & Orthopaedics ENT Genetics Neurology Renal & Urinary
Epidemiology + risk factors for development of bronchiolitis
< 2 years
Winter
Prematurity
Passive smoking
Underlying disorders: CLD, CHD
Diagnostic investigation for bronchiolitis
NPA PCR
Bronchiolitis presentation
Noisy breathing
Cough
Crackles and wheeze
Coryzal
Bronchiolitis causative organisms
RSV
Rhinovirus, influenza, adenovirus, parainfluenza
Part of respiratory tract affected by bronchiolitis
LRTI
Xray findings severe bronchiolitis
Hyperinflation of lungs - flattened diaphragm
Horizontal ribs
Bronchiolitis management in hospital
Respiratory support:
High flow oxygen therapy
CPAP – HDU admission
Intubation and ventilation – PICU admission
Feeding support:
Small volume frequent sips
NG tube – bolus feeds or continuous feeds
IV fluids
Severe adenovirus infection causing bronchiolitis complication
Bronchiolitis obliterans
Bronchiolitis chest auscultation
Fine end-inspiratory crackles
Prolonged expiration
Indication for bronchiolitis prophylaxis
Immunocompromised
Pavalizumab
Causative organism of bronchiolitis obliterans
Adenovirus
Metabolic abnormality seen in bronchiolitis
Hyponatraemia
Prompts for bronchiolitis referral to hospital
Apnoea (observed or reported)
Child looks seriously unwell
Severe respiratory distress e.g. grunting, marked chest recession, or a respiratory rate of over 70 breaths/minute
Central cyanosis
Reduced oral intake by 50-75%
Laryngotracheobronchitis
Croup
Croup clinical manifestations
Inspiratory stridor
Barking cough worse at night
Coryzal symptoms
Fever
Croup management
Oral dexamethasone
Nebulised adrenaline
Oxygenation
Croup Xray findings
Steeple sign - subglottic narrowing
Croup admission indications
Audible stridor at rest
< 6 months
Upper airway abnormality known
Severe croup
Uncertain diagnosis
Croup bronchoscopy indications
Recurrent croup - 5/6x a year
Croup epidemiology
Autumn
6 months - 6 years
Causative organism of epiglottitis
HiB
3 key symptoms indicating epiglottitis
Drooling
Tripod position
Cyanosis
Absence of cough
Epiglottitis initial management + antibiotics used
Avoid examination
Call anaesthetics
IV antibiotics: e.g. ceftriaxone
Antibiotic prophylaxis for epiglotittis
Rifampicin
Pneumonia: most common causative organism
Strep pneumoniae
Diagnostic criteria of pneumonia < 3 years old
> 39C (38C if < 3 months)
Chest recession
RR > 50
Monophonic wheeze indications
Inhaled foreign body
Aspiration pneumonia - most likely area of consolidation?
Right lower lobe of lung
Acute asthma management
Oxygen if O2 <92%
Salbutamol (inhaler/nebulised) +/- Ipratropium (nebulised)
Steroids (pred 3 days / dex 1 day)
Escalating:
MgSO4 nebulised
Salbutamol IV
Amino/theophylline
MgSO4 IV
Hydrocortisone IV
Viral induced wheeze management
Same as acute asthma management
Cystic fibrosis epidemiology: carriers + no of births
1 in 25 are carriers
So 1 in 2500 infants have CF
CF pathophysiology
Cl- transport affected – water unable to follow by facilitated diffusion
CF gene mutation
Delta F508 on chromosome 7 - encodes CFTR protein
Most common causative organism of infections in CF
Pseudomonas aeruginosa
3 potential investigations for CF - which is gold standard?
Heel prick
Best: Sweat test / Genetic test - CFTR gene
CF features infancy
Meconium ileus
Prolonged jaundice
Failure to thrive
Recurrent chest infections
Malabsorption
CF features young child
Bronchiectasis
Rectal prolapse
Nasal polyps
Sinusitis
CF features adolescence
Diabetes mellitus
Infertility in males
Pneumothorax or recurrent haemoptysis
Distal intestinal obstruction
CF - IRT
Immunoreactive trypsinogen
Raised in heel prick test
CF contraindication for lung transplant
Chronic infection with Burkholderia cepacia
Vitamin deficiencies in CF
A, D, E, K
Fat soluble, deficiency in pancreatic enzymes
Lumacaftor/Ivacaftor
Used in CF
Increases CFTR proteins transported to cell surface
False positive causes of sweat test for CF
Skin oedema
Malnutrition
Adrenal insufficiency
G6PD
Nephrogenic diabetes insipidus
Chronic infection in CF causative organisms
S aureus
Pseudomonas aeruginosa
Aspergillus
CF diet recommendation
High calorie, high fat
Vitamin supplementation
Replacement pancreatic enzymes: CREON
PDA treatment
Ibuprofen/indomethacin - inhibits prostaglandin synthesis
PDA murmur
Continuous machinery murmur
PDA examination findings
Left subclavicular thrill
Active precordium
Wide pulse pressure
Heaving apex beat
Large volume, bounding, collapsing pulse
Continuous machinery murmur
Medication to keep PDA patent
Prostaglandin E1
Mechanism by which PDA usually closes at birth
Usually closes within first few breaths – due to increased pulmonary flow which enhances prostaglandin clearance
Ventricular septal defect murmur
Pansystolic murmur at lower left sternal edge
Pathophysiology of pulmonary hypertension in ventricular septal defect
Blood flows from left to right ventricle - increased blood volume so lungs work harder
Pathophysiology of R-L shunt in ventricular septal defect
Increased volume of right side of heart due to initial L-R shunt leads to increased pressure so blood flows down pressure gradient
Ventricular septal defect Xray findings
Cardiomegaly
Pulmonary oedema
Enlarged pulmonary arteries
Most common congenital heart defect
VSD 35%
Ventricular septal defect: other conditions associated
Trisomy 13, 18 and 21
Foetal alcohol syndrome
Intrauterine infections
Eisenmenger’s syndrome
R-L shunt
Pathophysiology of atrial septal defect - foramen ovale formation
Septum primum forms, it grows and ostium primum closes
Another opening forms – ostium secundum, and septum secundum forms
It develops opening – foramen ovale
Valve created for blood flow
Atrial septal defect: 2 variants + their associations
Ostium secundum failure to close - 90%
Holt-Oram syndrome
Ostium primum failure to close - 10%
25% of Down’s
Present earlier
Associated with abnormal valves
Atrial septal defect murmur
Ejection systolic murmur - upper left sternal edge, radiates to back
Atrial septal defect heart sounds
Fixed split S2
Atrial septal defect ECG findings
Ostium secundum - RBBB with RAD
Ostium primum - RBBB with LAD
Most common cause of cyanosis in newborn
Tetralogy of fallot
Tetralogy of fallot murmur
Ejection systolic
4 defects seen in tetralogy of fallot
Pulmonary stenosis
Overriding aorta
Right ventricular hypertrophy
Ventricular septal defect
DiGeorge syndrome cardiovascular malformation association
Tetralogy of Fallot
Which defect in tetralogy of fallot is the primary determinant of the severity of symptoms?
Pulmonary stenosis
Tetralogy of fallot murmur
Ejection systolic at the left upper sternal border due to pulmonic stenosis
and/or
Holosystolic murmur at the left mid sternal border due to VSD
Tetralogy of fallot Xray findings
Boot shaped heart
Absence of thymic shadow
Tetralogy of fallot risk factors
Diabetic mother
Increased maternal age
Rubella
DiGeorge syndrome
Pathophysiology of tet spells
Worsened R to L shunt
Due to increase in pulmonary vascular resistance
Or
Decrease in systemic resistance
E.g. exertion, CO2 is a vasodilator so systemic vasodilation occurs
Management of tet spells
Acutely:
Lie baby on back and bend knees
O2
Beta blockers - relax right ventricle, improve flow to pulmonary vessels
IV fluids - increase preload
Morphine - decrease resp drive
Sodium bicarbonate - for metabolic acidosis
Phenylephrine infusion
Tetralogy of fallot management and prognosis
Surgical correction
Surgery has 5% mortality rate
2 cyanotic heart conditions
Transposition of great arteries
Tetralogy of fallot
TGA risk factors
T1DM and T2DM mother
TGA pathophysiology
Failure of aorticopulmonary septum to spiral during septation
TGA heart sounds + examination findings
Loud single S2
Promiment right ventricular impulse
TGA echocardiogram findings
Parallel aorta and pulmonary trunk
TGA Xray findings
Egg on side appearance
TGA management
Prostaglandin E1 to maintain PDA
Surgical correction
What is ebstein’s anomaly?
Tricuspid valves have a lower insertion than normal
Leads to right atrial enlargement and ventricle being smaller (atrialisation of ventricle)
Ebstein’s anomaly risk factor
Lithium exposure in utero
ECG findings in Ebstein’s anomaly
Arrhythmias
Right atrial enlargement
RBBB
Left axis deviation
CXR findings in Ebstein’s anomaly
Low insertion of tricuspid valve with right atrial enlargement
Cardiomegaly
Best diagnostic investigation for Ebstein’s anomaly
Echocardiogram
Also for assessing severity
Ebstein’s anomaly other associated conditions
Wolff-Parkinson White syndrome
Patent foramen ovale or ASD in 80%
Coarctation of aorta clinical manifestations
Weak femoral pulses
Radio-femoral delay
Subclavicular midsystolic murmur
Management of weak femoral pulses
Same day discussion with paediatrics
Coarctation of aorta other conditions associated
Turner syndrome
Berry aneurysms
Neurofibromatosis
4 features of an innocent murmur
Systolic
Soft
Short
Varies with posture
Rheumatic fever causative organism
Beta haemolytic group A strep
Most commonly strep pyogenes
Rheumatic fever investigations
Throat swab
ASO antibody titres
Echo, CXR, ECG
Rheumatic fever pathophysiology
Type 2 hypersensitivity reaction after infection - usually tonsillitis
Rheumatic fever management
Penicillin V 10 days
+ prophylactic into adulthood
NSAIDs for joint pain
Aspirin and steroids for carditis
Rheumatic fever diagnostic criteria
JONES Criteria
2 major or 1 major + 2 minor
JONES:
Joint arthritis
Organ inflammation
Nodules
Erythema marginatum rash
Sydenham chorea
FEAR:
Fever
ECG
Arthralgia w/o arthritis
Faised inflammatory markers
Rheumatic fever complications
Recurrence
Valvular heart disease
Chronic heart failure
Rheumatic fever most likely valvular disease
Mitral stenosis
ADHD 3 core behaviour problems
Hyperactivity
Impulsivity
Inattention
Pharmacological management of ADHD
1st: Methyphenidate
2nd: Lisdexamfetamine, atomofexetine
2 side effects of methyphenidate (Ritalin)
Weight loss
Stunted growth
Monitoring in ADHD
Growth
Height every 6m
Weight every 3m if < 10
Or
Every 6m if > 10 (except 3 months after starting treatment)
Measure BP and HR before and after every dose change + every 6 months
Which area of the brain shows reduced function in ADHD
Frontal lobe
Perthe’s disease pathophysiology
Avascular necrosis of the femoral head
Perthe’s disease epidemiology
5M:F
Primary school age
10-15% cases are bilateral
Perthe’s disease risk factors
Social deprivation
Passive smoking
Perthe’s disease presentation acutely + late
Limb + limited motion
Referred pain in thigh/knee
Pain improves with rest
Late:
Leg shortening
Perthe’s disease investigations
Xray frog leg - repeated through treatment
2nd line: MRI
Perthe’s disease management
If < 6, observation only
Contain hip: plasters/brace etc.
Surgery
Perthe’s disease stages
Initial necrosis
Fragmentation
Reossification
Healed
Kocker’s criteria
3/4 for septic arthritis
T > 38.5
ESR > 40
WCC > 12
Cannot weight bear
Limp indications for assessment
Urgent assessment if:
<3 with acute limp
Or
< 3 with temp >38C
What is DDH?
Abnormal relationship between femoral head and acetabulum
DDH screening test
Barlow - dislocatable
Ortolani - reducible
DDH risk factors
Female
First born
Feet first (breech)
First degree family history
Fluid (oligohydramnios)
Fat (macrosomia)