Paediatrics part 2 Flashcards
What is wheeze?
A physical sign, whistling sounds on expiration and polyphonic
why is a wheeze expiratory?
In intra thoracic pressure to increase and causes the airways to constrict more
Why is a wheeze polyphonic?
Different sized airways are affected
What can cause wheeze in children?
Viral episodic wheeze, asthma, persitent infantile wheeze plus others ( CF, Thracheo-bronchomalacia, Cilliary dyskinesia, GORD, chronic aspiration immune deficiency persistent bacterial bronchitis, Chronic lung disean of the newborn)
What age does asthma usually present from?
From the age of 5
What are the symptoms viral episodic wheeze?
No interval symptoms, no excess of atopy, likely to improve with age. No benefit from inhaled steroids, may use oral steroids
What are the causes of wheeze pathophysiologically?
Inflammation and oedema of the airway, excess mucous, infection
What is acute asthma managment?
Oxygen if needed bronchodilator, Salbutamol maybe nebuliser, atrovent (ipatropium bromide), prednisilone 1mg/kg if asthma maybe Dexamthasone, Maybe IV steroids hydrocortisone, IV salbutamol bolus, Aminophylline MgSO4 salbutamol infusion
What is aminophylline?
Respiratory stimulent and respiratory dilator, low therapeutic idex
What is the principle of steroid drug ?
Minimum oral dose, minimum effective dose
What are reasons for failure of asthma treatment?
Adherence, diagnosis, environment choice of drugs/devices, bad disease
What are the side effects of inhaled steroids?
Adrenal supression - dose relates surpression, only 28 cases of adrenal crisis in children on inhaled steroids high doses have impaired adrenal axis
Growth reduction?- yes over 2 years reduce it by 1cm, affects final growth probably
Bones- dose related reduction in mineralised bone density but unlikely to cause fractures
How to balance risks of ICS?
Minimise dose and maximise targeting, monitor growth and discuss with the family
What are upper resp infections?
rhinitis, otititis media, pharengitis, tonsilitis larygitis
What are lower resp infections?
bronchitis, croupd, epiglottitis, thraceitis, bronchiolitis, pneumonia
Which resp infections are mainly viral?
Rhitistis, pharengitis laryngitis croupd bronchiolitis
Which pathology causes tahypnoea?
Ones that affect alveoli or respiratory bronchioles affecting gaseous exchange
What is the most common respiratory virus in children?
Respiratory syncytial virus
How do viral infetions tend to progress?
They begin in mouth or nose and progress down the airways
What can be presentation of respiratory virus?
Croup Pneumonia viral exacerbation of asthma, wheezy bronchitis, bronchiolitis all can present in all ways but certain viruses are more likely to present in certain forms
What can cause acute stridor?
Croup and acut epiglotittis
What are viruses that cause croup?
Usually para flu
What is croup treatment?
Steroids single dose to reduce inflammation
What is the cause and treatment of Acute epiglottitis?
Haemophilus influenzae B usually, try to not upset the child, secure airway, anaesthetist, or ENT surgeon.