Child's health Flashcards
When does ductus arteriosus close?
Day 2 of life
What congenital heart defect is seen in Down’s Syndrome?
cAVSD (complete)
What genetic syndrome is coarctation of the aorta associated with?
Turner syndrome (45, X)
what does CPAP stand for?
Continuous Positive Airways Pressure
What is long QT syndrome often mistakenly diagnosed as in children?
Epilepsy
Long QT syndrome is associated with sudden LOC during exercise, stress or emotion
Features suggestive of a cardiac cause of syncope:
Symptoms on exercise - potentially dangerous
FH of sudden unexplained death
Palpitations
Infecting agent in Rheumatic fever?
An abnormal immune response to infection with Group A haemolytic streptococcus
(same that causes tonsillitis)
What causes leukaemia?
When a white blood cell starts multiplying out of control
List the white blood cells
Lymphoblasts (B lymphocytes, T lymphocytes)
Granulocytes (eosinophiil, neutrophil, basophil)
What does ALL result from?
Infiltration of the bone marrow or other organs with leukaemic blast cells
What CFs does bone marrow infiltration present with?
ANAEMIA: pain, lethargy
NEUTROPENIA: infection
THROMBOCYTOPENIA: bruising, petechiae, nose bleeds, bone pain
What are the CFs as a result of the reticulo-endothelial infiltration in ALL?
hepatosplenomegaly
lymphadenopathy
What are the CFs as a result of other organ infiltration in ALL?
CNS: headaches, vom, nerve palsies
Testicular enlargement
Why might ALL present like meningitis?
Petechiae ‘rash’ (from the easy bruising in ALL).
- But this would actually be meningococcal septicaemia as is this as soon as there is a rash!
Ix ALL:
BLOOD COUNT:
- anaemia
- WCC up or down
- neutropenia
- thrombocytopaenia
- blast cells
BONE MARROW
LP
Peak age ALL
4-7yrs
Prognosis ALL
80%
Good prognostic factors ALL
Age 2-10
Female
WCC <50
No CNS disease
ALL classification:
Common
B and T cell
ALL treatment
Stratified into risk groups A B & C
Consolidation and CNS treatment
Intensification
Maintenance (girls 2yrs, Boys 3yrs)
Causes of macrocytic anaemias
Vitamin B12 deficiency (including pernicious anaemia)
Folate deficiency
Causes of microcytic, hypochromic anaemia:
Iron deficiency
Thalassaemia
Chronic inflammatory disease
What does a low reticulocyte count mean?
Lack of production
What does a high reticulocyte count mean?
Haemolysis / blood loss
Causes of anaemia classified by mechanism:
decreased production
increased consumption
increased loss
Tx Sickle cell disease
Pneumococcal, influenza, meningococcal vaccines
Prophylactic penicillin
What infection might cause aplastic crisis in sickle cell disease?
Parvovirus B19
What presents with a large abdo mass, haematuria, anorexia, fever?
Wilms’ tumour
A nephroblastoma
2 paediatric bone tumors and which is most common?
Osteogenic sarcoma (more common)
Ewing Sarcoma
What do neuroblastomas arise from?
Neural crest tissue in the adrenal medulla and SNS
Raised levels of what in the urine are suggestive of neuroblastoma?
Catecholamine levels
CFs brain tumour
Behaviour change, tired, raised ICP, focal neuro
Headache (worse lying down) Vomiting (esp on morning waking) Papilloedema Squint Nystagmus Ataxia Personality change
Whats the most common brain tumour type? and where?
Astrocytoma
Cortex, hypothalamus, thalamus
Diagnosis of Kawasaki disease?
CRASH and BURN (Fever >5 days) + other features
Conjunctivitis (bilateral + non-purulent)
Rash
Adenopathy (cervical + unilateral)
Strawberry tongue + cracked lips
Hands / feet – erythema + desquamation
What is Kawasaki diseae?
A systemic vasculitis
Ix Kawasaki disease
FBC: High platelets (thrombocytosis) ,
echo (inpatient) and one at 6 weeks to look for cornary artery aneyursms
Mx Kawasaki
Mx: oral aspirin, (anti-inflamatory, antiplatelet agent
IV immuniglobuin (dampens down immune response to vasculitis)
Echo inpt and cardio referal (for echo 6 weeks later)
Causes of neonatal collapse
- ** Sepsis
- Cardiac (duct dependent lesion)
- PPHN
- Metabolic
- NIA
What causes PPHN?
a. Meconium aspiration
b. Infection (from PROM, group B strep carrier)
c. Congentical abnormalities of the heart and lungs
What happens in PPHN?
is a condition caused by a failure in the systemic circulation and pulmonary circulation to convert from the antenatal circulation pattern to the “normal” pattern.
In a fetus, there is high pulmonary vascular resistance and low pulmonary blood flow as the fetus does not use the lungs for oxygen transfer. When the baby is born, the lungs are needed for oxygen transfer and need high blood flow which is encouraged by low pulmonary vascular resistance.
Management of neonatal collapse
Airway / breathing
- intubation and ventilation
- NG tube
Circulation
- Lines (UAC/UVC/peripheral cannula)
- Fluid resus (10 mls/kg 0.9% NaCl)
- Inotropes (dopamine/dobutamine)
Disability
- Glucose (2mls/kg 10% glucose if hypoglycaemia)
- Assess neurology (think about therapeutic hypothermia)
Investigations
- CXR/AXR, Echo, FBC/CRP/cultures
Antibiotics
Treat underlying cause
What is bronchiolitis and what age group does it occur in?
Acute infection of lower airways
The very young (usually <1yr)
What classically causes bronchiolitis?
Respiratory Syncytial virus (RSV)
CFs bronchiolitis
Coryzal symptoms (including mild fever) precede:
- dry cough
- increasing breathlessness
- wheezing, fine insp crackles (not always present)
- feeding difficulties associated with increasing dyspnoea
Mx Bronchiolitis
O2
Support feeds
Patience
POSSIBLY
- Respiratory support (high flow, CPAP, intubation + ventilation)
- Nebulised adrenaline
–>supportive care
What is a NPA and why is it useful in bronchiolitis?
Nasopharyngeal Aspirate (to diagnose causative agent)
Useful to avoid other investigations and to decide if need segregate kids if in ITU (RSV is highly contagious)
What is sepsis?
Dysregulated host response leading to end organ dysfunction (hypotension, tachycardia etc.)
Causative agents in sepsis?
Meningococcal disease (caused by neisseria meningitidis)
Streptococcal Group A infection
(in neonates: GBS)
(Also can be viral, fungi, parasites)
Ix for sepsis
FBC U&Es LFTs CRP Cultures Gas (including lactate)
Mx sepsis
- O2 to keep sats >94%
- Fluid resus: 20ml per kilo, 0.9% saline
- Broad spectrum Abx : cefotaxime
- Appropriate escalation: intensive care, inotropes
- DIC: FFP + platelet transfusions
What do inotropes do?
Incrased the strength of mucscular contraction
What is asthma?
What age?
Reversible airways obstruction
Usually >5 yrs of age
To assess control + Hx of asthma, what 4questions to ask?
- How often are you using blue inhaler?
- How many courses of oral steroids in last 6 months?
- Hospital admissions etc.?
- Have you ever been to intensive care?
Treatment of acute asthma ?
- Bronchodilators: salbutamol (10 puffs via spaces), or ipratropium if on O2
- Steroids: oral steroids if theyre ok, IV hydrocortison if a bit sicker
Rarely: magnesium, aminophyline, salbutamol IV - if you do that they need to go to ITU
What to check acute asthma inpt before you send them home?
Check inhaler technique
Compliance with their meds
Are you sure you’re taking the brown one everyday? (beclamethasone)
What are the cardiac causes of neonatal collapse?
Duct dependent systemic lesions:
- Coarctation of the aorta
- Critical aortic stenosis
Duct dependent pulmonary circulation
- Pulmonary atresia
- TOF
Both: TGA
Normal value of pH
7.35 - 7.45
Normal value of pO2
10 - 14 kPa
Normal value of pCO2
4 - 6 kPa
Normal value bicarbonate
HCO3-
22 - 26
Normal base excess
- 2 to + 2
Normal lactate value
< 2
What conditions might cause Respiratory Acidosis?
Inefficient ventilation: asthma, pneumonia, bronchiolitis, preterm neonates
What condition might cause Respiratory Alkalosis?
Hyperventilation (and tingling fingers)
What conditions might cause Metabolic acidosis?
Sepsis, DKA
What conditions might cause Metabolic Alkalosis?
Profuse vomiting, Diuretics
Causative organism scarlett fever?
Group A strep
CFs (general) scarlet fever
sudden fever
sore throat
red strawberry tongue
CFs (progression) scarlet fever
Skin = sandpaper-like feel
Pastia lines = red streaks in body folds
Mx scarlet fever
Oral penicilin for 10 days
Complications scarlet fever?
Rheumatic fever Otitis media Pneumonia Septicaemia Glomerulonephritis Death!
Causitive agents in meningitis?
Neisseria meningitidis
Group B strep
Community Mx of meningits?
IM benzylpenicilin
What is given to prevent hearing loss from meningitis?
Dexamethasone
What are the causes of breathless congenital heart disease? And what direction is the shunt?
ASD
VSD
PDA
L –> R
What are the causes of cyanotic congenital heart disease? And what is the direction of the shunt?
5Ts:
- Truncus arteriosus
- ** Transposition of the great arteries
- ** Tricuspid atresia
- Tetralogy of fallot
R –> L
What is the most common congenital heart defect?
VSD
CFs VSD?
Tachycardia
Tachyopnea
FTT
HF
**Pansystolic murmur (L lower sternal edge)
Mx VSD?
Small: will close spontaneously
Large: surgical closure + diuretics
CFs ASD?
Commonly none
Tachypnoea
FTT
Wheeze
**Ejection systolic murmur (L upper sternal edge)
What does the DA connect?
The aorta to the pulmonary artery
CFs PDA
Tachypnoea
FTT
Bounding pulse
**Continuous machine-like murmur (below L clavicle)
Mx ASD?
Small: will close spontaneously
Large: surgical closure
Mx PDA
NSAIDs (ibuprofen - to close)
or
Surgical ligation
4 components tetralogy of fallot?
- Pulmonary stenosis
- Overriding aorta
- VSD
- Right ventricle hypertrophy
CFs ToF
Severe cyanosis Hypercyanotic spells on: exercise, crying, defecating Squatting on exercise **Ejection systolic murmur Clubbing of fingers and toes (late)
Mx ToF
Surgery at 6 months
- Close VSD
- Relieve pulmonary outract obstruction
What happens in transposition of great arteries?
Pulmonary artery and aorta swap (2 independent loops)
- RV -> aorta -> body -> RA
- LV -> PA -> lungs -> LA
its only the PDA keeping them alive
CFs Transposition of the great arteries
Present on day 2 of life (after DA closes) with severe life-threatening cyanosis
Mx Transposition of the great arteries
KEY: want to improve mixing
1. Maintain PDA (prostaglandin infusion)
- Surgical: atrial septostomy and arterial switch procedure
(to close - ibuprofen)
What can cardiac outflow obstruction be divided into?
Well child:
- Pulmonary stenosis
- Aortic stenosis
Sick child:
- Coarctation of the aorta
What happens in pulmonary stenosis?
Pulmonary valve leaflets partially fused together, obstructs RV outflow
CFs Pulmonary stenosis?
Asymptomatic
** Ejection systolic murmur (Left upper sternal edge)
Palpable thrill
What happens in aortic stenosis?
Aortic valve leaflets partially fused together, obstructs LV outflow
CFs aortic stenosis?
Reduced exercise intolerance
CP / syncope on exertion
Carotid thrill
** Ejection systolic murmur (R upper S.E)
What happens in coarctation of aorta, and where?
Narrowing of the aorta
Commonly at DA
Acute circulatory collapse at day 2 when duct closes –> severe obstruction to LV outflow
CFs coarctation of the aorta
Acute circulatory collapse at day 2 when duct closes:
- sick baby w severe HF
- absent femoral pulses
- severe metabolic acidosis
- BP may be arms > legs
They become more severe with age:
- Asymptomatic
- Then S.O.B, arterial hypertension, intermittent claudication
- *Ejection systolic murmu (L upper S.e)
- Radial/radial:femoral delay
Mx Coarctation of the aorta
Stent and surgical repair
What heart defect is more common in Turner’s syndrome? - and what is TS?
Coarctation of the aorta
45, X
What are the 4 S’s of a harmless murmur?
Soft
Systolic
aSymptomatic
L Sternal edge
Ix for a harmless murmur?
Antenatal ECHO
Neonatal ECHO, ECG, CXR
What syndrome occurs in a long-standing left-right shunt in a congenital heart defect?
Eisenmenger’s syndrome
What happens in Eisenmenger’s syndrome?
long standing L to R shunt increases Pul pressure over time, leading to thickening of pulmonary arteries, which causes RVH and increases pressure in RV, reversing the shunt R to L (cyanotic)
CFs Eisenmenger’s syndrome
10-15yr old, severely cyanosed
original murmur may disappear
clubbing
right ventricular failure
haemoptysis, embolism
Mx Eisenmenger’s syndrome
Heart-lung transplantation
CFs Rheumatic fever
Latent interval of 2-6 weeks following pharngeal infection
Then: polyarthritis, mild fever + malaise
Name of criteria for diagnosing Rheumatic fever?
Jones Diagnostic Criteria
Mx acute rheumatic fever?
Anti-inflammatory agents (aspirin)
Corticosteroids
How to prevent the recurrence of rheumatic fever?
Monthly injections of benzathine penicillin
Causative agent infective endocarditis?
Staph aureus
Group B streptococci
Causative pathogen croup
Parainfluenza virus
Age of occurence croup?
6mo - 6yrs.
Peak 2yrs
CFs Croup
Barking cough (seal like) Stridor Hoarseness Breathlessness Poor feeding
Preceded by fever, worse at night
Mx Croup (general)
Oral dexamethasone
Mx Croup if severe (before escalation to ICU)
High flow O2
Nebulised adrenaline
Pathogens tonislitus
Group A beta-haemolytic strep
Epstein-Barr Virus
Mx tonsilitis
Penicilin (or erythromycin if allergic)
Hosp admission for IV fluids and analgesia if can’t swallow
What is acute epiglottitis
Life threatening medical emergency
Upper airway obstruction
Intense swelling of epiglottis and surrounding tissue
Causative pathogen epiglottitis?
Haemophilis influenzae B
How to diagnose otitis media?
Examination of the tympanic membrane:
- Bright red and bulging, with loss of normal light reflection
Causative pathogen otitis media?
Bacterial: Pneumococcal infection (caused by strep pneumoniae) or HIB
Viral: RSV + rhinovirus
Rx otitis media
Regular analgesia for 1 wk
Amoxicillin (if child remains unwell for 2-3 days)
CFs otitis media
Fever
Pain in ear
What can recurrent ear infections lead to? and what is its CFs?
Otitis media with effusion
Asymptomatic apart from reduced hearing
Mx OME
Usually resolves spontaneously
Grommets +/or adenoidectomy
Idications for removal of both the tonsils and adenoids
Recurrent OME with hearing loss
Obstructive sleep apnoea (absolute indication)
What is stridor
A rasping sound heard on inspiration
Mx acute epiglottitis?
dont examine throad
Call anesthetist to intubate
IV Cefuroxime
Causative organism whooping cough?
Bordetella Pertussis
Symptoms whooping cough
Inspiratory whoop
Spasms of cough - worse at night, cause vomiting, cyanosis, epistaxis (nosebleeds) and subconjunctival haemorrhages
Paroxysmal phase in whooping cough
3-6 wks but can persist for months (100 day cough)
Ix whooping cough
Per Nasal Swab culture
Mx whooping cough
azithromycin School exclusion (for 2 days after commencing Abx)
Epidemiology Bronchiolitis
Most common LRTI in children
Incidence increases in winter
CFs bronchiolitis
Coryzal
Breathlessness
Poor feedsing
Signs of resp distress in bronchiolitis?
Nasal flaring Head bobbing Subcostal or intercostal recessions Tracheal tug Grunting
Other signs of resp distress in bronchiolitis
Fine end inspiratory crackles
High pitched wheeze
Cyanosis (on feeding)
Ix bronchiolitis
PCR analysis of nasal secretions
CXR: hyperinflation
Rx bronchiolitis
Supportive - humidified O2, NG feeds, fluids
Prevention for bronchiolitis
Palivizumab
- monoclonal antibody
- IM once per month through autumn and winter
- CF, immunocompromised, congenital heart disease, Downs, preterm babies
Asthma pathophysiology
Chronic inflamatory disorder of lower airways secondary to hypersensitivity
Reversible airway obstruction:
- bronchospasm
- musocal swelling and inflammation
- mucous plug
CFs asthma
intermitted dyspnoea wheeze diurnal variation sputum production etc.
Dx asthma
clinical
FEV1:FVC <70%
bronchodilator reversibility - FEV1 improvement by 12% or more
What should you monitor for with IV salbutamol?
Hypokalaemia
Cystic fibrosis pathophysiology
Autosomal resessive defect in CFTR
- codes cANP regulated chloride channels in cell membranes (Chr 7)
- causes increased viscosity of secretions and blockage of narrow passageways
Clinical features CF
Reduction in air surface liquid layer & impaired ciliary function retention of secretions:
- chronic endobronchial infection - pseudomonas, staph aureus
Pancreatic ducts blocked by thick secretions –> maldigestion, malab and steatorrhea
- neonates present with meconium ileus
Later in life : DM, delayed puberty, male infertility, female subfertility
What do most CF pts die of?
Respiratory failure
Dx CF
Guthrie heel prick screening test
Sweat test (Cl ions markedly increased)
Feacal elastase (low levels)
Gene abnormalities in CFTR protein
Mx CF
- Aim to prevent progression of lung Dx and maintain adequate nutrition
- High cal, high fate diet
- Chest PT and postural draining
- Pancreatic enzyme replacement therapy (PERT)
- Prophylactic Abx (? flucloxacillin)
What infections are you especially worried about in CF?
Pseudomonas aeruginosa
Staphylococcal aureus
DDx stridor other than croup and epiglottitis?
Foreign body
Anaphylaxis
Most common cause of pneumonia in younger children?
Viral: RSV
Most common cause of pneumonia in older children?
Bacteria: streptococcus pneumoniae or mycoplasma pneumoniae
What Abx for pneumonia?
1stL: amoxicillin
If severe: co-amoxiclav or Cefotaxime
Triad in nephrotic syndrome
Hypoalbuminaemia
Proteinuria
Oedema (peripheral, scrotal/vulval, periorbital, ascites)
Common causes Nephrotic syndrome
Minimal change disease
Focal-segmental glomerulosclerosis
Post-streptococcal nephrities
Tx Nephrotic syndrome
Steroid sensitive: 85%-90%
- Prednisolone oral
Steroid resistant
- Diuretics, salt restriction, ACE-I, NSAIDs
- Cyclophosphamide +/- ciclosporin (both immunosuppresants)
Triad in Haemolytic Uraemic Syndrome
Acute renal failure
Thrombocytopenia
Haemolytic anaemia
What does Haemolytic Uraemic Syndrome follow?
A prodrome of bloody diarrhoea - E. Coli / shigella
CFs Haemolytic Uraemic Syndrome
Abdo pain
Decreased urine output
Normocytic anaemia
Ix Haemolytic Uraemic Syndrome
Fragmented blood film
Stool culture
FBC