Paeds 1 - Cardio and Resp Flashcards
What is the name of the condition where the larynx and trachea is infected?
Croup
What is the most common organism the causes croup?
Parainfluenza virus
What are the four causes of stridor in children?
Croup
Epiglottitis
Bacterial tracheitis
Foreign body
Give three symptoms of croup
Barking cough Hoarse voice Fever Coryza Difficulty breathing, worse at night
Give three signs of croup
Stridor, worsened by crying
Recession
Hoover’s sign - indrawing of chest wall
What age group typically suffers from croup?
6 months to 6 years
What is the Steeple sign?
Narrowed trachea, seen on X-Ray in croup
What is the Wesley score?
Score for severity of croup
What is the treatment of croup?
PO dexamethasone and prednisolone
Nebulised adrenaline with oxygen
What are the three stages of wheeze in the Tucson model?
Transient early wheeze
Viral episodic wheeze
IgE-associated asthma
What are three risk factors for transient early wheeze?
Maternal smoking
Prematurity
Early viral exposure
What is a typical trigger for viral-induced episodic wheeze?
URTI
What is the treatment for viral-induced wheeze?
Inhaled bronchodilators, oxygen
No treatment for interval
Detail the asthma management pathway
1) SABA PRN
2) SABA + ICS
3) SABA + ICS + LTRA
4) SABA + ICS + LABA
5) SABA + MART (low dose ICS)
6) SABA + MART (mod dose ICS)
7) SABA + MART (high dose ICS) OR theophylline
What is the commonest pathogen that causes bronchiolitis?
Respiratory Syncytial Virus
How does bronchiolitis present?
Coryza, dry cough, shortness of breath, feeding difficulty
What are the signs of bronchiolitis?
Tachypnoea Subcostal and intercostal recession Hyperinflation of the chest Fine end-inspiratory crackles High pitched wheeze expiratory > inspiratory Cyanosis or pallor
How is bronchiolitis diagnosed?
PCR analysis of nasopharyngeal secretions
Pulse oximetry
Blood gas looking for respiratory acidosis
What is bronchiolitis obliterans?
Permanent damage following adenovirus infection
What is the treatment of bronchiolitis?
Supportive treatment
Humidified oxygen delivered
Fluids
Assisted ventilation - nasal or facemask CPAP/full ventilation
What organisms cause pneumonia in newborns, infants, and children over 5?
Newborn - Group B strep
Infants - RSV, s.pneumoniae, hib
>5 - m and s.pneumoniae
How is pneumonia diagnosed?
CXR - consolidation and pleural effusion
What is increased respiratory rate in the age groups 0-2 months, 2-11 months, >11 months?
0-2m - >60/min
2-11m - >50/min
>11m - >40/min
What is the treatment of pneumonia?
PO amoxicillin if under 5
Erythomycin if >5
What is the cause of obstructive sleep apnoea in children?
Upper airway obstruction secondary to adenotonsillar hypertrophy
What are the risk factors for obstructive sleep apnoea?
Hypotonia or neuromuscular disease
Down syndrome
Cerebral palsy
What are the symptoms of obstructive sleep apnoea?
Loud snoring
Apnoeas (pauses in breathing)
Disturbed sleep and daytime sleepiness
Restlessness
What are the complications of obstructive sleep apnoea?
Obesity, growth failure, learning and behavioural problems, acute life-threatening cardio respiratory events
How is obstructive sleep apnoea diagnosed?
Overnight pulse oximetry for desaturation
What is the treatment of obstructive sleep apnoea?
Adenotonsillectomy
Perform overnight oximetry prior to surgery to identify severe hypoxaemia (increased risk of peri-operative complications)
What are the symptoms of sinusitis?
Viral URTI
Pain, swelling, and tenderness over the cheek
Which sinus is commonly affected in sinusitis?
Maxillary
What are the symptoms of tonsillitis?
Headache, apathy, cervical lymphadenopathy, white tonsillar exudate
NO COUGH
What pathogens cause tonsillitis?
Group A beta-haemolytic strep
EBV
What antibiotics are used in tonsillitis?
Penicillin/erythromycin
What is infection of the middle ear called?
Acute otitis media
What are the symptoms of acute otitis media?
Fever, ear pain, bright red bulging tympanic membrane
Why are infants and young children more prone to acute otitis media?
Eustachian tubes are short, horizontal, and poorly functioning
Name a complication of acute otitis media
Meningitis
Mastoiditis
Facial nerve palsy
What is the treatment of acute otitis media?
Analgesia If severe (systemically unwell/child under 2 with bilateral infection/increased risk of complications) then 5-7 days amoxicillin
What is the cause of glue ear) otitis media with effusion?
Recurrent acute otitis media
What is seen in glue ear?
Dull and retracted eardrum
Fluid level
What type of hearing loss occurs with glue ear?
Conductive
How is conductive hearing loss diagnosed in glue ear?
Flat trace on tympanometry
Pure tone audiometry - hearing loss
Distraction hearing test if younger
What is the treatment of glue ear?
1st line: conservative as usually resolves
2nd line: grommet insertion (ventilation tube)
What are the long term consequences of glue ear?
Speech and learning difficulties
What is bacterial tracheitis?
Pseudomemembranous croup
What are the causative organisms in bacterial tracheitis?
Usually follows a viral URTI
S.aureus
What is the presentation of bacterial tracheitis?
High fever, stridor, copious thick secretions
What is the treatment of bacterial tracheitis?
IV antibiotics, intubation and ventilation
Haemophilus Influenzae Type B causes what life threatening bacterial infection?
Epiglottitis
What does a child with epiglottitis look like?
Very ill and toxic
Sits upright and immobile with mouth open, drooling
No speaking or swallowing
Soft inspiratory stridor
What is the management of a child with epiglottitis?
Intubation/tracheostomy
IV cefuroxime
Prophylactic rifampicin for family
What are the symptoms of bronchitis in children?
Cough, fever, retrosternal pain on deep breathing or coughing
What does the organism Bordetella Pertussis cause?
Pertussis = Whooping cough
What occurs during the paroxysmal cough in whooping cough?
Characteristic inspiratory whoop
Red/blue in face
Cough worse at night
May lead to vomiting/epistaxis/subconjunctival haemorrhage
How is pertussis diagnosed?
Nasal swab for culture
Lymphocytosis > 15x10^9/L
Which antibiotic is prescribed for whooping cough?
Neonates: clarithromycin
Children and adults: azithromycin or clarithromycin
Pregnant women: erythromycin
Which congenital cardiac defects have a left-to-right shunt (breathless)?
Ventricular septal defect
Atrial septal defect
Patent ductus arteriosus
Which congenital cardiac defects have a right-to-left shunt (cyanosed)?
Tetralogy of Fallot
Transposition of the Great Arteries
Tricuspid atresia
In which condition does common mixing occur?
Atrio-ventricular septal defect
What conditions causing outflow obstruction occur in a) a well child and b) a sick neonate
a) pulmonary and aortic stenosis (asymptomatic with a murmur)
b) aortic coarctation (collapsed with shock)
In the fetus, the pressure in which atrium is higher and why?
RA>LA as it receives all venous blood flow including blood from the placenta, and LA has relatively little blood return from the lungs due to PFO
What occurs when the newborn takes their first breaths?
Resistance to pulmonary blood flow falls and volume of blood flowing across the lungs increases x6
When the placenta is excluded from the circulation, what happens to the blood pressure in the RA?
It decreases, causing the flap of the foramen ovale to close.
When does the ductus arteriosus close?
Within hours - days
What happens to babies with heart defects that rely on blood flow through the duct (from pulmonary artery to aorta)
Duct dependent - condition rapidly deteriorates
Which type of murmur can be innocent if heard when febrile or under perfused?
Short - ejection Systolic murmur (increased cardiac flow) Soft No Systemic features No radiation and no thrills S1 and S2 normal Standing and sitting variation
Which type of murmur is always pathological?
Pansystolic murmur
What congenital cardiac conditions can cause heart failure in the neonate?
Obstructed duct dependent circulation - hypoplastic left heart syndrome, critical aortic stenosis, severe aortic coarctation, interruption of the aortic arch
Heart failure can occur in patients with VSD, ASD, and a large PDA, in which age group?
Infants
What conditions can cause heart failure in older children?
Rheumatic heart disease
Cardiomyopathy
Eisenmenger syndrome