Respiratory Medications - Quiz 5 Flashcards
What is the technique for using Inhalers?
Slow Deep Breath over 5 seconds, Hold for 10 seconds, then Blow all out
What is the problem w/ using a Metered Dose Inhaler?
Only 12% gets to lungs, even less w/ ETT
How much more med is needed w/ a Nebulizer vs. an MDI?
6-10x more needed
How should Bronchodilators & Corticosteroids be adminstered?
Bronchodilators BEFORE Corticosteroids
Which Muscarinic Receptors are Stimulatory?
M1, M3, M5
Which Muscarinic Receptors are Inhibitory?
M2 & M4
What are the effects of Inhaled Atropine?
↓Airway Resistance
&
↑Dead Space
Which COPD meds contain Glycopyrrolate?
Seebri
Lonhala
Bevespi
When is Glycopyrrolate NOT indicated?
Acute COPD Symptoms
Which meds are Short Acting Muscaranic Antagonists (SAMA)?
Atropine
Glycopyrrolate
Ipratropium
What are the advantages of using Ipratropium?
Minimal Systemic Absorption
No Bronchodilator Tolerance
More effective for Chronic Bronchitis/Emphysema
What are the disadvantages of using Ipratropium alone vs. a Beta Agonist?
Slower Onset (30-90 min)
&
Less Effective
How does Tiotropium (Spiriva) work?
Blocks M1 & M3 Muscarinic Receptors
What does Tiotropium (Spiriva) do?
Bronchdilation
&
↓Secretions
How does Aclidinium compare to Tiotropium?
Faster Onset to Peak
Take BID vs Daily
Aclidinium + Formoterol = ?
Duaklir
Which meds are Long Acting Muscarinic Antagonist (LAMA)?
Tiotropium
Aclidinium
Umeclidinium
What are side effects of Inhaled Anticholinergics?
Glaucoma
&
Urinary Retention
What is the Gold Standard for treating Acute Bronchospasms?
Beta 2 Agonists
What gives Beta-2 Agonist their long duration of action?
They’re Non-Catecholamines - resistant to COMT
What is the advantage of using newer Inhaled Beta-2 Agonists at therapeutic doses?
Relax Bronchial Smooth Muscle WITHOUT stimulating the Heart
What are Inhaled Beta-2 Agonists used for?
Treats & Prevents Acute Asthma
↑Airflow
↑Exercise Tolerance
Tocolytic Therapy
Treats Hyperkalemia
How long do Short Acting Beta 2 Agonist (SABA) last?
3-6 hours
How long do Long Acting Beta 2 Agonists (LABA) last?
> 12 hours
Which pressors have Beta-2 effects, but also a lot of Non-Respiratory side effects?
Ephedrine
&
Epinephrine
Which med was reapproved to treat Mild Asthma?
Primatene Mist - Inhaled Epinephrine
What is the preferred Beta-2 Agonist for Acute Bronchospasms?
Albuterol
Onset: 15 min
Peak: 1 hour
What is the R-Enantiomer of Albuterol?
Levoalbuterol (Xopenex)
Which Beta-2 Agonists were used as Tocolytics?
Terbutaline
&
Ritodrine
Which meds are Long Acting Beta 2 Agonists (LABA)?
Salmeterol
Vilanterol
Formoterol
Aformoterol
Which meds are Short Acting Beta 2 Agonists (SABA)?
Albuterol
&
Levoalbuterol
What are the side effects of Inhaled Beta 2 Agonists?
Tremors
Tachycardia
Hyperglycemia
Hypokalemia
Hypomagnesemia
What is the Black Box Warning for Long Acting Beta 2 Agonists?
DONT USE ALONE - ↑Asthma Death
What does Cromolyn do?
Prevents Histamine Release & Secretory Response
Does NOT Relax Bronchial Smooth Muscle or treat Acute Asthma
Which meds are Methylxanthines?
Theophylline/Aminophylline
Caffeine
Theobromine
What do Methylxanthines do?
Stimulate CNS
↑BP
↑Contractility
↑HR
Relax Smooth Muscles
How does Methylxanthines work?
Non-Selectively Inhibits PDE
&
Competes for Adenosine Receptors
What is Theophylline used for?
Treats Acute Asthma & Premie Apnea
What side effects would you see with Theophylline levels of 15-25 mcg/mL?
GI Upset
&
Tremors
What side effects would you see with Theophylline levels of 25-35 mcg/mL?
Tachycardia
&
PVCs
What side effects would you see with Theophylline levels over 35 mcg/mL?
V-Tach
&
Seizures
What does Caffeine do?
Stimulate CNS
Cerebral Vasoconstrictor
Secrete Gastric Acids
What is Caffeine clinically used for?
Premie Apnea
PDPH
Offset Sedation from Cold Medicine
What happens when Histamine binds to the H1 Receptors?
GI & Respiratory Smooth Muscle Contraction
Pruritis
Sneezing
Vasodilation
↓HR
Coronary Vasoconstriction
What are the CV effects of activated H1 & H2 Receptors by Histamine?
↑Capillary Permeability
Hypotension
Tachycardia
Flushing
Headache
What happens when H2 Histamine Receptors are activated?
↑cAMP
↑Gastric H+ Ion
↑Myocardial Contractility
↑HR
Coronary Vasodilation
Which Histamine receptors need to be blocked to completely block Vasodilation?
H1 & H2
What is the Triple Response (Wheal & Flare) regarding Histamines?
Edema
Dilated Arteries - Flare
Pruritis
How does the H1 Histamine Receptor affect the Airway?
Bronchial Constriction
How do H2 Histamine Receptor affect the Airway?
Bronchial Relaxation
Histamine Receptor Antagonists are both _____ & ______
Histamine Receptor Antagonists are both COMPETITIVE & REVERSIBLE
How do Histamine Receptor Antagonist work?
Keeps the receptor in Inactive Form, but does NOT Inhibit Histamine Release
What are the differences b/t 1st Gen H1 Blockers vs 2nd Gen H1 Blockers?
1st Gen: Sedating & Non Selective
2nd Gen: Non-Sedating
What are the effects of 1st Gen H1 Blockers?
Sedation
Anticholinergic Effects
Tachycardia
QT Prolongation
Dysrhythmias
What are H1 Blockers used for?
Allergies
Pretreats Bronchospasms
Itching
Antiemetic
Sedation
Which meds are 2nd Gen H1 Blockers?
Cetirizine
Levocetirizine
Loratidine
Fexofendaine
What is the Outer Layer of the Adrenal Cortex & What does it release?
Zona Glomerulosa - Releases Mineralocorticoids
What is the Middle Layer of the Adrenal Cortex & What does it release?
Zona Fascicula - Releases Glucocorticoids
What is the Inner Layer of the Adrenal Cortex & What does it release?
Zona Reticularis - Releases Weak Androgens
What causes a release of Cortisol?
Stress
What does Aldosterone do?
Mineralocorticoid that
↑K+ Excretion
↑Na+ & Water Retention
↑Blood Volume
Cortisol levels are ____ in the AM and ____ in the PM
Cortisol levels are HIGH in the AM and LOW in the PM
What is Addison’s Disease?
Primary Adrenocortical Insufficiency - Adrenals dont secrete Cortisol or Aldosterone at all
How is Addison’s Disease managed?
Replacement therapy including Glucocorticoids AND Mineralocorticoids
What causes Secondary Adrenocortical Insufficiency?
Chronic Steroid Use
&
Supressed HPA Axis
How is Secondary Adrenocortical Insufficiency managed?
Replacement therapy of ONLY Glucocorticoids
What do Corticosteroids INCREASE?
CO
RR
GLuconeogensis
Pain Tolerance
What do Corticosteroids DECREASE?
Inflammation
Immune System
Digestion
What are Synthetic Glucocorticoids?
Prednisone, Prednisolone, Methylprednisolone
Betamethasone
Dexamethasone
Triamcinolone
Which med is a Synthetic Mineralocorticoid?
Fludrocortisone
How much more potent is the Anti-Inflammatory effects of Dexamethasone & Betamethasone compared to Cortisol?
25x more Potent w/ ZERO Sodium Retaining effects
Which meds are Inhaled Corticosteroids?
Fluticasone
Beclometasone
Mometasone
Budesonide
Cicleonide
What are the Endocrine Side effects of Steroids?
HPA Axis Supression
Cushing’s
Hyperglycemia
What are the CV Side Effects of Steroids?
Dyslipidemia
HTN
Thrombosis
Vasculitis
What are the CNS Side Effects of Steroids?
Cataracts
Glaucoma
Mood Changes
Psychosis
Cerebral Atrophy
How do Steroids affect Fat Distribution?
Buffalo Hump
Moon Face
Skinny Arms & Legs
How do Steroids affect blood levels?
↑Hct
&
↑WBC
How should steroids be prescribed to avoid HPA Axis Supression?
Every Other Day & Less than 3 Weeks