Final: COPD/asthma Flashcards
what confirms diagnosis in asthma?
spirometry
- Tells us if there’s obstruction
- Asses for any reversibility after giving bronhodilator
Asthma differentials
- upper airway dz
- acute bronchiolitis, laryngotracheobronchitis
- allergic rhinitis
- sinusitis
- vocal cord dysfunction
- foreign body
- gerd
- copd
- CHF
- laryngeal and/or vocal cord dysufnction
- cystic fibrosis
- alpha 1 antitrypsin deficiency
- meds
*asthma clinical hallmarks
- Bronchospasm is often reversible
- episodic wheezing with or w/o hyper responsiveness
- dyspnea
- sputum production
- Chest tightness
- Cough
well controlled/intermittent asthma vs poorly controlled/persistent asthma in children, have sx’s
- well controlled/intermittent asthma :
- sx’s are < 2 days a week
- should be using SABA < 2 times a week
- night time awakenings < 2x/month
- poor/persistent asthma
- mild: > 2 days/week
- mod: daily
- severe: throughout day
- night time awakenings 3-4x/month
*sx’s of more serious asthma exacerbation
- marked breathlessness
- RR > 30, HR > 120
- inability to speak more than short phrases
- use of accessory muscles
- drowsiness should result in initial treatment while immediately consulting with a clinician.
initial treatment of asthma attack
- Inhaled SABA: up to 2 treatments 20 min apart of 2-6 puffs by MDI or nebulizer treatments.
if initial treatment has a good response (no wheezing/dyspnea), peak est. flow > 80%:
May continue inhaled SABA every 3–4 h for 24–48 hr
if initial treatment has an incomplete response (persistent wheezing/dyspnea/tachypnea), PEF 50-79%:
- add oral systemic corticosteroid
- continue inhaled SABA
- consult clinician for further action
if initial treatment has a poor response (marked wheezing/dyspnea), PEF < 50%:
add oral systemic corticosteroids
repeat inhaled SABA ASAP
if distress severe and non responsive, call doc AND go to ED, consider 911
asthma diagnosis
- (1) demonstration of episodic symptoms of airflow obstruction (e.g., wheeze, cough, shortness of breath),
- (2) evidence that airflow obstruction is at least partially reversible
- (3) exclusion of other conditions from the differential diagnosis.
*diagnostic hallmark of asthma
reversal of obstruction after the giving a bronchodilator (improved spirometric values < 80% and improved post SABA)
asthma diagnostics
- Pulse ox
- CBC if secondary infection
- Chest radiographs/sputum cx NOT recommended unless sus infectious illness
- Allergy evaluation
- Sweat test
- Pulmonary function tests
- Peak flow measurements
- peak expiratory flow rate
- maximal mid expiratory flow
- FVC
*
daily controller meds of asthma are:
low dose ICS and long acting beta agonist bronchodilator combos (ICS/LABA)
add on controller meds include (long acting anticholinergic, Anti-IgE, Anti-IL 5 and systemic corticosteroids
reliever asthma meds:
SABA (albuterol)
low dose ICS/formoterol
short acting anticholinergics
how to monitor peak flow meter at home
for moderate/severe asthma
record at least once daily in early afternoon, after 2-3 weeks
PEF > 80% measurement is what zone?
green
good asthma control; safe to proceed
PEF 60-80% zone
yellow
sx’s that interfere with daily activities (cough, wheeze, chest tightness, SOB, nocturnal awakening)
need temporary increase in med dose or frequency (inc bronchodilator, add/inc ICS or oral steroids)
PEF < 50%
red zone, danger, emergency treatment
inability to blow into the peak flow meter, accessory respiratory muscle use, difficulty walking or talking because of asthma, and cyanosis. Immediate use of inhaled rescue bronchodilator therapy and initiating or increasing oral corticosteroid therapy are necessary.
*atopic triad
- skin disorders (eczema)
- allergies? allergic rhinitis
- inhaler use/asthma
all 3 causes inflammation
Samter’s triad
chronic condition in pt’s with asthma
aka Aspirin Exacerbated Respiratory Disease
- atopic dermatitis/eczema
- nasal polyps
- aspirin or NSAID sensitivity
Exercise induced asthma management
if exercise regularly, use ICS as controller med
use 2 puffs B2 agonist and/or cromolyn MDI 15-30 mins prior to exercise [don’t use as controller med bc it builds tolerance]