Asthma / COPD / Smoking Cessation Flashcards
What is the goal of Pulmonary function Tests
See how much air lungs will hold
how quick breathing is
What is IRV,VC, TLC,FRC, RV, ERV?
IRV- space to breathe in more
VC= Total air that can move in lung
TLC= Total air that can be in lung
FRC= volume of air that can still in after normal expiration
RV= air that is always in lung
ERV=max air exhaled below TV
What is FEV1?
Amount of air that can be expelled in 1 second
What is FVC?
Total volume air expired as rapid as possible
What is a high/normal FEV1/FVC ratio mean
Restrictive lung disease because hard to get air in so both values are low and may appear normal.
What does a low FEV1/FVC ratio mean
Obstructive lung disease because hard to get air out= FEV1 is low
What do we use spirometry tests for?
Diagnose lung disease
Measure extent- FEV1/FVC ratio
monitor progression
most accurate- compare to their normal
How do you run a spirometry test?
Tell patient to take deepest breath possible then exhale into sensor as hard as they can for at least 6 seconds.
Cons of spirometry tests.
Need full cooperation of patient
Do NOT use in:
people with risk of infection, high cranial and thoracic pressure= post surgery
What increase of FEV1 indicates bronchodilator response (asthma disease)
12%
What is a peak expiratory flow rate test do?
Portable meter to see forced expiration
What are cons of peak flow?
Need maximum effort for accuracy
proper technique
for self monitoring
What do we use Carbon Dioxide diffusing capacity for?
When we want to see the ability of diffusion of CO2 in alveoli
What is the pulse oximetry test?
Uses light absorptive of hemoglobin to determine oxygenation.
If you have issues with breathing what compensation will occur to balance pH
Metabolic/ kidneys will retain bicarbonate.
Which compensation mechanism is quicker respiratory or kidney?
Respiratory
How do you calculate Anionic Gap?
AG= Na- (Cl+HCO3)
What does it mean if you have high Anionic Gap?>11
Metabolic Acidosis
What is bronchoscopy?
Endoscoping the airways through mouth or nose
Determine Abnormality pH-7.1, PaCo2= 25, HCO3= 10
Due to the fact that pH is low it is acidosis, to determine if metabolic we see that HCO3 is low so it is metabolic PaCO2 is low only for compensatory
Determine abnormality, pH 7.32, PaCO2 51, HCO3=25 , PaO2= 70 and has cystic fibrosis.
Acidosis due to pH and respiratory due to compensatory HCO3 is normal because it takes days.
True of False: The majority of people with asthma have poor control.
True
True or false: When controlled Asthmatics have the exact same QoL and lifespan.
True
When in childhood which gender is more common with asthma and why?
males due to their airway being smaller
At what age is asthma in females more common?
greater than 40
What does atopy mean?
genetic predisposition for development of IgE which causes hyper-responsive airways
What is a long term complication of asthma if left untreated or poorly controlled?
remodelling which can become irreversible.
Which type of WBC is correlated with asthma?
eosinophils
What is the difference between Type 1 asthma and type 2?
Type 2- atopy= allergies and eosinophils
Type 1- obesity, smoke related
What FEV1/FVC will asthmatics have?
<75-80%
What two questions about difficulty of breathing should be asked in order to assess?
If it is occurring at night or is worse at night due to cortisol levels
if exercise makes it worse drop of FEV1 of >15%
True or false GERD can be correlated with Asthma
True
Which URTI are correlated with asthma?
Viral= RSV, influenza, rhinovirus
How does NSAIDS trigger asthma?
COX inhibition= more bronchoconstrict leukotrienes
What change to Expiration ratio would we see for asthmatics after bronchodilator?
> 12% increase (increase of 200ml)
What is the positive challenge test?
asses hyperactivity after doses of methacholine
asthmatics will respond to a greater degree
How often should a HCP monitor?
After diagnosis 3-6 months
after is 1-2 years
For diagnosis what is the different criteria for adult vs children
Adult= <0.75 and >12% increase (and 200ml)
Child= <0.8 and >12%
What lab tests can we do for asthmatics?
CBC
Eosinophil count
IgE []
What is the definition of asthma control? CTS
Daytime sx<2 days/week
Night sx<1/weak
SABA use <2 doses/week
Give me some example of endogenous stimuli of asthma.
GERD, stress, hormones, rhinitis
What is the mechanism of SABA?
peak in 5 minutes and selectively acts on B2 adrenergic receptors
What are the side effects of SABA? And why?
It can also act on B1 receptors= CVD side effects
tachycardia, tremor, insomnia, BP, BG, arrhythmias tachyphylaxis
What is the selectivity of salbutamol and terbutaline on B1?
1
What are are the DI of SABA?
Beta blockers= oppose action of SABA
diuretics that increase hypokalemia
TCA= increase s/e
QT prolongers
Give me the most common LABA’s
Salmeterol, formoterol, vilanterol and indacaterol
What is special about formoterol
quick onset, can be used as reliever
True or false SABA and LABAs have exact same MOA, S/E, and DI
True
What is the most effective treatment for asthma?
Steroids because DUHHHH ANTI INFLAMMATORY
What are the inhaled corticosteroids?
Fluticasone, budesonide, ciclesonide
What is special about budesonide?
Preffered product for pregnant women.
CARD JUST TO REMIND THAT IDK IF I WANT TO PUT SPECIFIC DOSING ON
What type of dose do we generally want for maintenance? DUH
Low dose
When starting out is it more effective to give moderate or low dose
moderate
Where is the line for the best benefit of fluticasone and budesonide?
200/d-fluticasone
400/d-budesonide
What is special about ciclesonide?
it is a prodrug and can reduce thrush s/e
General side effects of ICS?
harshness, irritation, cough, URTI, Thrush, growth retard (prob not),
True or false: Everyone should use a spacer
True- would make it more effective but usually only for kids or elderly.
Which corticoid is preferred for oral or IV when needed?
Oral= prednisone
IV= dexamethasone
When is oral corticoids used?
When severe asthma= may be long term
or acute distress= taper not needed.
What is the mechanism of action of LTRA?
stop leukotrienes from eosinophils to reduce inflammation
What are some side effects of LTRA’s?
headache, dizzy, depression, neuropsych effects
True or false: LTRAs are stronger than SABAs
FALSE
but if combo very good
What is our option for a LTRA
Montelukast
True or false LTRA’s are relievers
False they are controllers
What is the minimum age to get a LTRA
2 years old
What is dosing for montelukast?
2-5 years= 4mg QD hs
6-14 = 5mg QD hs
15+= 10 mg QD hs
At what age does their effect drop dramatically?
12 years old
What is LTRA’s role in care?
Alt to increasing ICS
no ICS wanted or used
Would Jeff Taylor be okay with combo medications of LABA and ICS?
Yes he would as it is more convenient and increases adherence
What is the only combo of LABA and ICS we should know
Symbicort (Budesonide and formoterol) as it can be used prn and daily
True or false theophylline is the most potent bronchodilator we have
False it is less effective than SABA
What is the use for theophylline?
add on BUT BAD SIDE EFFECTS= tachycardia, diarrhea, anorexia
What is MOA of theophylline?
inhibit PDE4= bronchodilator
What is MOA and age range for Omalizumab
> 6 if bad control on high ICS
Anti IgE antibody
When could we consider tiotropium(LAMA)?
add on for people >12 and severe uncontrolled asthma despite ICS/LABA
What is the role of macrolide in asthma?
can lower exacerbations in people >18 BUT bad ototoxicity and increasing resistance
True or false: Using SABA a lot is absolutely fine
Tricky question while nothing wrong medicinal wise, overuse of SABA can lower ICS usage = higher mortality, less control and more remodelling
True or false: using sedatives during an exacerbation is okay
False
What is the criteria to be high risk of exacerbation?
current smoker
> 2 inhalers a year
poor control per CTS
history
What is the base therapy for asthma ALWAYS?
SABA or bud/form PRN AND ICS
If we need to step up from base therapy what is our options?
if 1–11 years old= increase to medium dose ICS
>12 = add LABA
What is our option if the patient DOES NOT or CANNOT take a ICS?
LTRA
If base therapy was Symbicort PRN what is our step up?
Symbicort PRN and QD
After the first step up what is the next option if still not controlled?
6-11 years= add LABA OR LTRA
>12= Add LTRA and/or tiotropium
If high risk of exacerbation what should their base therapy be
Daily ICS and SABA prn
If in severe asthma territory what therapy is needed?
High dose of ICS and second controller (LAMA,LABA,LTRA) or systemic CS for 50% of the year
What do we do if high ICS and other controllers don’t help for severe asthma?
consider mabs, macrolides, anti-IL5
If asthma is uncontrolled what is the first thing you should do as a pharmacist?
Check use of inhaler
asses adherence
How often should pregnant asthmatic be reviewed?
4-6 weeks
When should we step down?
when >3 month control
If we step down what must we ensure with the patient?
See if they consent
choose a good time
have a plan inlace
HAVE ENOUGH DRUG TO GO BACK TO PREVIOUS DOSES
What Peak flow is considered green asthma control?
80-100%
What peak flow is considered yellow asthma control?
60-80%
What should patients do if in yellow control?
Increase medication to get back to green. if no improvement in 4 days go see doctor
What peak flow is considered red asthma control?
<60% USE RELIEVER AS MUCH AS NEEDED GO TO EMERGE
True or false: Interchanging Peak flow devices is recommended?
NO use one type so good accuracy and compare