Asthma Flashcards
What is a viral induced wheeze?
Acute wheeze due to viral infection
typically Rhinovirus or RSV
What features suggest viral induced wheeze rather than asthma?
Presentation in v young <3 yrs
no atopic history
only during viral infections
What is a unilateral wheeze in a child <3yo until proven otherwise?
Foreign object
yo
1st line investigation for suspected asthma
Spirometry and bronchodilator reversibility
What is the best indicator to diagnose suspected asthma?
FEV1
If there is an improvement of 12% this indicates reversibility with bronchodilator
What does a moderate attack look like in a child 2-5?
Can have moderate, severe, lifethreatening
What does a moderate attack look like in a child 5+?
Can have moderate, severe, lifethreatening
What does a severe attack look like in a child 2-5?
What does a severe attack look like in a child 5+
What does life threatening attack look like in a child 2-5?
What does a life threatening attack look like in a child 5+
How to manage oxygen <92%?
High flow oxygen through venturi mask or high flow nasal cannulae
If oxygen is not required for management e.g. moderate attack
What can be used?
Bronchodilator burst therapy:
10 puffs salbutamol via MDI and spacer every 30-60 seconds
Need to involve seniors here if burst therapy flopped
If a patient has a severe/lifethreatening asthma attack (92% O2>)
Has been given oxygen + bronchodilator burst therapy
what next?
Nebulised salbutamol + Ipratropium bromide
repeat every 20 minutes!
Need to involve seniors here if burst therapy flopped
What other bronchodilators can be used as the final line treatment for asthma?
IV
- IV magenisum sulphate (1st)
- IV salbutamol /
- IV aminophylline*
* monitor for hypokalaemia via ECG
panic step for asthma attack?
if all else has failed
Intubate and ventilate
What to start ALL children who have a asthma attack of any kind?
Oral prednisolone within hour
if they were admitted, then give 3-5 days of oral prednislone for home
What counts as being symptom free after a asthma attack?
(don’t need salbutamol for 4 hours) and PEFR >75%. After discharge, follow-up in 48 hours by GP.
Asthma management <5yo?
- Step 1 (newly-diagnosed asthma) → SABA.
- Step 2 (not controlled with SABA alone OR symptoms ≥3 times/wk or night-time waking [STRAIGHT TO THIS]) → SABA + 8-Week Trial of Moderate-Dose ICS.
- Step 3 → SABA + ICS + LTRA.
- Step 4 → stop LTRA and refer to paediatric asthma specialist.
Asthma management ages 5-16?
- Step 1 (newly-diagnosed asthma) → SABA (salbutamol).
- Step 2 (not controlled with SABA OR symptoms ≥3 times/wk or night-time waking) → SABA + Low-Dose ICS (beclamethasone or budesonide).
- SABA (Blue) → reliever. ICS (Brown) → preventer (twice a day, at morning and night). Always check parents know correct inhaler technique.
- Step 3 → SABA + ICS + LTRA (montelukast).
- Step 4 → SABA + ICS + LABA (salmeterol).
How to manage a viral induced wheeze?
- 1st Line → SABA (Salbutamol) utilising ‘Burst Therapy’. Given 10 puffs. Typically given hourly to manage the acute episode.
- 2nd Line → Oral Montelukast or Inhaled Corticosteroid.