Drugs Flashcards
Racepinephrine. OTC
Asthmanefrin
Beta-2 agonist MOA
Relax bronchial smooth muscle. Relieve symptoms
(Asthma is chronic inflammatory disorder. Inflamed airways are hyperresponsive causing obstruction and airflow limitation due to bronchospasm)
Inflammation –> bronchospasm –> symptoms
Albuterol
Proair HFA, Proventil HFA, Ventolin HFA
Levalbuterol
Xopenex, Xopenex HFA
R-albuterol
Side effects of beta-2 agonist
Tremors, shakiness, lightheadedness, cough
Hyperglycemia, hypokalemia, tachycardia, palpitation
ProAir dosing (MDI)
1-2 inhalation q4-6 hours PRN
Priming (when and how) albuterol
Before first use and if NOT used for > 2 weeks
3-4 sprays
If using SABA > 2 weeks increase maintenance dose.
..
Salmeterol
Serevent Diskus
Advair
Salmeterol/fluticasone
Difference between Advair HFA and Advair Diskus
Advair HFA (45, 115, 230 mcg fluticasone + 21 mcg salmeterol ) ages 12 and older
Advair Diskus - ages 4 and older (100, 250, 500 mcg fluticasone + 50 mcg salmeterol)
Formoterol
Foradil
Capsule must be refrigerated, patient can keep at room temp for 4 months
Symbicort
Formoterol/budesonide
LABA Diskus dosing and MDI dosing
MDI 2 inhal BID
Diskus 1 inhal BID
LABA BBW
Increase of asthma related death
Contraindicated as monotherapy for asthma
Beclomethasone
Qvar
Budesonide
Pulmicort
Ciclesonide
Alvesco
Flunisolide ( built in spacer)
Aerospan
Fluticasone
Flovent
Mometasone
Asmanex
Which two ICS do not need to be shaken before use
Qvar, Alvesco
They are solution
Qvar
Low dose
Medium dose
High dose
< 240 low dose
< 480 medium
> 480 high
Flovent HFA vs Diskus dose
< 265 mcg (300 mcg for Diskus)
< 440mcg ( 500 mcg for Diskus)
> 440 mcg (500 mcg for Diskus)
Dulera
Mometasone+formoterol
ICS contraindication
Primary treatment of status asthmaticus or acute episode of asthma or COPD
ICS side effect
Thrust, dysphonia, cough, increase risk of fracture, pneumonia, growth retardation in children with high dose
ICS monitoring
Growth retardation, bone mineral density, oral candidiasis
Pulmicort respules has a jet nebulizer
Must use jet nebulizer only
Two type of steroid
Glucocorticoid: made by the body in response to stress or given exogenously
Mineralocorticoid: regulate sodium and water balance. (Fludrocortisone)
Fludrocortisone used to increase sodium and Addison dx (replace some of the function of aldosterone)
Difference between the two types of steroid
Glucocorticoid used mainly for inflammation
Mineralocorticoid is not for inflammation
Long term side effect of steroid
Cushing syndrome (excess cortisol)
- fat in abdomen
- moon face (fat in face)
- buffalo hump (fat in shoulder)
- impaired wound healing
- thinning/bruising
Psychiatric (delirium, mood swings) Sodium and water retention Hypokalemia Hyperglycemia Immunosuppression Glaucoma Osteoporosis Hirsutism(women) GI bleeding/ulcers
Oral steroid dose equivalent
Short acting
Intermediate acting
Long acting
Cortisone 25mg
Hydrocortisone 20 mg
Intermediate
Methylprednisolone/ triamcinolone 4mg
Prednisone/prednisolone 5 mg
Long
Betamethasone 0.6mg
Dexamethasone 0.75 mg
Why do you taper steroid
Due to suppression of the hypothalamic-pituitary-adrenal axis (HPA). It gives the body time to increase its own endogenous cortisol production ( which decrease over extended steroid use)
When do you taper steroid
If on steroid for more than 10 - 14 days
Cortisone is
Prodrug for cortisol
Hydrocortisone
Solu-cortef
Methylprednisolone
Medrol or solu-medrol
Prednisone is
Prodrug for prednisolone
Prednisolone
Millipred or orapred
Triamcinolone
Kenalog
Aristospan
Steroid contraindication
Live vaccine (immunosuppression)
Oral steroid short term side effect (<1 month)
Increase appetite/weight gain, fluid retention, insomnia, bitter taste
High dose: increase blood pressure and increase blood glucose
Oral steroid monitor
Growth retardation, bone density, IOP, other
When should you take steroid
7am - 8am to mimic the body diurnal release of cortisol
Relative anti inflammatory potency
Betamethasone/dexamethasone > methylprednisolone/triamcinolone > prednisone/prednisolone > hydrocortisone > cortisone
Leukotriene modifying agent MOA
Leukotriene receptor antagonists of LT D4 (zafirlukast and singulair) and E4 (zafirlukast)
Reduce airway edema, construction and inflammation
Zafirlukast
Accolate
Montelukast
Singulair
Zileuton
Zyflo
LTRA contraindication
Hepatic impairment (zafirlukast)
Active liver disease or LFT 3x above UNL (zileuton)
LTRA warning
Neuropsychiatric event
LTRA side effect
Headaches, dizziness, LFT increase, sinusitis
Zileuton monitoring
LFT every month fir the first 3 months then every2-3 months for the first years
Which drug increase zafirlukast level?
Carvedilol (beta blocker), theophylline, warfarin
Which drug reduce zafirlukast level?
Macrolide, theophylline and food
Zafirlukast counseling
Take on empty stomach
1 hour before meal or 2 hours after
Must stay in original container
Singulair dosing (adult) 6-14 years
1-5 years
10 mg daily in evening
6-14 years : 5 mg daily
1-5 years: 4 mg daily
Theophylline MOA
Block phosphodiesterase causing increase cAMP which promotes release of epinephrine from adrenal medulla cells –> bronchodilation, diuresis, CNS and cardiac stimulation and gastric secretion
Theophylline therapeutic range
5-15mcg/mL ( measure peak after 3 days of oral dosing
Theophylline active metabolites
Caffeine and 3-methylxanthine
Theophylline is caution is what patients
Cardiovascular dx, hyperthyroidism,PUD, seizure
Theophylline signs of toxicity
Persistent vomiting, seizure, ventricular tachycardia
What weight is used to dose theophylline
IBW
IV aminophylline has how much theophylline
80% of theophylline
Theophylline side effect
Nausea, loose stool, insomnia,tremor, tachycardia, headache
Drugs that increase theophylline
Macrolide, FQ, beta blocker, LTRA, allopurinol, alcohol, CCB,cirrhosis, liver disease, CHF, hypothyroidism
Drugs that reduce theophylline
Carbamazepine, rifampin, phenytoin, phenobarbital, ritonavir, St. John wort, levothyroxine, high protein, charbroiled
Omalizumab
Xolair
Xolair BBW
Anaphylaxis
Must be given in doctors office and monitor for anaphylaxis
Priming for ICS
> 7 days