Respiratory Drugs Flashcards

1
Q

What are respiratory diseases

A

Asthma, COPS, upper resp tract infection

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2
Q

Drug groups for treatment of RDs

A

Adrenergic drug for bronchodilation and corticosteroids for inflammation

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3
Q

What are the classifications of RDs

A

non-infectious (asthma and COPD), viral or bacterial respiratory infection

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4
Q

Difference between asthma and COPD (reversibility of airway obstruction)

A

A: reversible
C: irreversible

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5
Q

Causes of asthma attacks

A

Allergen, pollen, exercise, stress, or upper resp tract infection

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6
Q

What is status asthmaticus

A

Is the persistent life-threatening bronchospasm drug therapy

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7
Q

What are the signs of asthma

A

Wheezing and shortness of breath

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8
Q

What are the two main mechanisms of COPD

A
  • chronic inflammation of the airway and excessive sputum production
  • alveolar destruction with airway space enlargement and collapse
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9
Q

What controls respiration

A

Chemoreceptors, mechanoreceptors, behavioural

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10
Q

Chemoreceptors are the main stimulus for respiration. Breathing is stimulated by? And in COPD

A

By the increase of CO2 pressure.

By the decrease of O2 Pressure for COPD

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11
Q

Mechanorecptotes detect changes in

A

Flow, pressure or volume

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12
Q

Behavioural controls of receptors pertain to

A

Emotional affective condition of the client such as anxiety, pain, or general discomfort may cause ventilation that is excessive for the metabolic demand of the body

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13
Q

How are respiratory drugs delivered to the lungs? And what are they

A

Directly through inhalation devices.

Beta 2 agonists, anticholinergics/antimuscarinics, corticosteroids

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14
Q

Other resp drugs than direct

A

Leukotrine modifiers, methylxanthines, Anti-IgE antibodies

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15
Q

What is the difference between COPD and asthma drugs

A

When it is administered. As the same drugs are used for both

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16
Q

What are the advantages of inhalation devices

A
  • directly to the bronchioles
  • greater than oral dose
  • accurate measurement
  • rapid and predictable onset
  • compact, portable and sterile
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17
Q

Beta agonists work by the stimulation of

A

Beta receptors in the lungs

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18
Q

The activation of beta receptors result in an accumulation of __________ in the smooth muscles, and causes ___________

A

Cyclic adenosine monophosphate (cAMP), relaxation of smooth muscles

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19
Q

This type of beta agonist produce fewer cardiac side effects

A

Selective

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20
Q

What are side effects of beta agonists

A

Nervousness, tachycardia, xerostomia

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21
Q

What are the two types of beta agonists

A

Short and long acting

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22
Q

Short acting beta agonists are used for the treatment of? What is the drug called

A

Both asthma and COPD. Salbutamol

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23
Q

What is the onset and duration time of short acting beta agonist

A

Within minutes and lasts up to 4-6 hours

24
Q

What is the onset and duration of action for long acting beta agonist

A

Delayed but duration is sustained

25
Q

Long acting beta agonist is used for the mgmt of

A

First line of COPD not for acute attacks

26
Q

What is the MoA for anticholinergics

A

Inhibits cholinergic response > bronchodilation

27
Q

Anticholinergics affect sputum by

A

The reduction in volume but not the viscosity

28
Q

What are the side effects of anticholinergics

A

Xerostomia, bitter taste

29
Q

What are the two types of anticholinergics and where are they used

A

Short - COPD reliever and controller

Long - first line COP

30
Q

This is used for chronic therapy and what is its route

A

Corticosteroids through the inhaled route

31
Q

Corticosteroids can be used through the oral route when

A

There is an acute exacerbation

32
Q

What is the MoA of corticosteroids

A
  • binds to glucocorticoid receptor on cytoplasm of cells
  • reduced production of inflammatory mediators
  • which decreases mucous production
33
Q

Overall respiratory effect of corticosteroids

A
  • improvement in pulmonary rxn, less wheezing, tightness and coughing
34
Q

Uses of corticosteroids

A
  • first line in asthma, in addition to COPD (severe)
35
Q

Side effects of inhaled corticosteroids

A
  • xerostomia, hoarseness, fungal infections on mouth and throat (ie. candidiasis)
36
Q

What can be done to manage oral effects

A

Rinse mouth and through, use a spacer device with MDIs

37
Q

What are prolonged effects of corticosteroid use

A

Adrenal suppression, impaired healing and immunosuppresion

38
Q

What are leukotriene’s -

A

inflammatory cells byproduct - increase mucous secretion, bronchoconstriction, and bronchial hyperactivity

39
Q

What are the overall result of leukotreine receptor agonists (LTRA)

A

Antiinflammaroty and bronchodilator activity

40
Q

Uses of LTRA

A

2nd line for asthma not for COPD

41
Q

What are the adverse reactions for LTRAs

A

Irritation of stomach mucosa, headache and alteration of liver function

42
Q

What are the uses of methylxanthine

A

Add on therapy in asthma and COPD that is not controlled with other therapies

43
Q

MoA of methylxanthine

A
  • inhibits phosphodiesterase > increase in cAMP and relax sm. muscles
  • inhibit contractile PGs, increase cathecolamines
44
Q

What are the side effects of methylxanthine

A

CNS and cardia stimulation, Increased gastric secretion and diuresis

45
Q

Methylxanthine has a narrow therapeutic index and interacts with these drugs

A

Benzodiazepines, and macrolide antibiotics

46
Q

When is anti-IgE antibodies indicated

A

As an ADD On therapyin ALLERGIC asthmatics with elevated serum IgE who have inadequate response to other therapies

47
Q

What is the MoA of anti -IgE abs

A

Recombinant DNA derived monoclonal abs

Prevent IgE from binding to mast cells and basophils, decreaseing release of allergic inflammatory mediator

48
Q

When is the subcutaneous anti IgE injection given

A

Once or twice a month

49
Q

What is. The side effect to anti-igE antibodies

A

Injection site rxn

50
Q

Zafirkulast interacts with this common dent drug

A

Erythromycin lowers Z levels by 40% = may result in asthma exacerbation

51
Q

Theophylline is respiratory drug interacts with this common Dent drug

A

Macrolide antibiotics - (erythromycin and clarithromycin) increase T levels > toxic effects.
T may diminish benzodiazepines

52
Q

10-28% of asthmatics have a hypersensitivity to

A

aspirin and NSAID

53
Q

LA with this should be avoided for those with RDs

A

Sulfite - hypersensitive

54
Q

This analgesic can cause resp depression

A

Opiods

55
Q

Consideration of N2O2 use

A

Use with caution dye to the precipitation of apnea (due to high O2 concentration)