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Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold...

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Page 1: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.
Page 2: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Chapter 9

Respiratory Drugs

Page 3: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Chapter 9 Topics

• Asthma• Emphysema• Other Lung Diseases• Cough and Cold• Smoking Cessation

Page 4: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Learning Objectives

• Differentiate the pulmonary diseases

• Learn the pathophysiology and treatment of asthma

• Define the goals of asthma treatment

• Discuss the pathophysiology and treatment of emphysema and chronic bronchitis

Page 5: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Learning Objectives

• Describe other diseases related to the lungs

• Be aware of the reemergence of tuberculosis and of treatment for this disease

Page 6: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Learning Objectives

• Understand how the antitussives, expectorants, decongestants, and antihistamines differ, and be able to describe their uses

• Know why some drugs are prescribed for their side effects

• Outline smoking cessation plans and supportive therapy

Page 7: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Asthma

• Inflammatory disease that affects the airways causing a reversible airway obstruction

• Intermittent attacks are precipitated by specific triggering events

• Causes a decrease in the amount of oxygen and carbon dioxide exchanged

Page 8: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Asthma Classes

• Allergic– Present in 35%-55% of patients

Page 9: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Asthma Classes

• Allergic– Present in 35%-55% of patients

• Exercise Induced

Page 10: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Asthma Classes

• Allergic– Present in 35%-55% of patients

• Exercise Induced

• Nonallergic

Page 11: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Upper and Lower Respiratory Tracts

Page 12: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Exchange of Oxygen and Carbon Dioxide

Page 13: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Asthma

• Asthmatic lung is more sensitive to lower doses of allergens

• Asthma has shown to have genetic predisposition

Page 14: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Asthma Characteristics

1. Reversible small airway obstruction

2. Progressive airway inflammation

3. Increased airway responsiveness to stimuli

These characteristics translate into:1. Wheezing

2. Dyspnea

3. Acute and Chronic Cough

Page 15: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Asthma Attack – 1st Response

• Triggered by an antigen-antibody reaction

• Causes degranulation of mast cells: histamine released

• Results in bronchospasm and mucus production that plugs the small airways

Page 16: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Asthma Attack – 2nd Response

• Bronchoconstriction with delayed, sustained reactions

• Causes self-sustaining inflammation

Page 17: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Asthmatic Response

Page 18: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Peak Flow Meter

• Assesses severity of disease and aids in determining course of therapy

• Measures maximum flow rate in forced expiratory maneuvers

Page 19: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Goals of Asthma Care

• Sleep well every night

• Be able to go to work or school every day

• Be free from wheezing all day

• Have good control of coughing

• Be able to continue with activities and exercise

• Tolerate medicines well

Page 20: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Asthma Therapy

• Know the triggers and try to avoid them

• Accurately use a Peak Flow Meter regularly

• Be aware of status asthmaticus and the treatment for it.

**This is a medical emergency.**

Page 21: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Stepwise Approach to Asthma Therapy

Step 1. Short-acting oral or inhaled beta-2 agonist (less than once a week); no daily medications

Page 22: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Stepwise Approach to Asthma Therapy

Step 1. Short-acting oral or inhaled beta-2 agonist (less than once a week); no daily medications

Step 2. Short-acting oral or inhaled beta-2 agonist (not to exceed three to four times in one day); daily medications (e.g., inhaled corticosteroids)

Page 23: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Stepwise Approach to Asthma Therapy

Step 3. Short-acting oral or inhaled beta-2 agonist; daily medications (e.g., inhaled corticosteroid and long-acting bronchodilator)

Page 24: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Stepwise Approach to Asthma Therapy

Step 3. Short-acting oral or inhaled beta-2 agonist; daily medications (e.g., inhaled corticosteroid and long-acting bronchodilator)

Step 4. Short-acting oral or inhaled beta-2 agonist; daily medications; inhaled corticosteroid, long-acting bronchodilator, long-acting beta-2 agonist, and oral corticosteroids long term

Page 25: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Asthma Drug Therapy

• Treatment should start at the most appropriate step• Start with an aggressive initial approach• Rescue corticosteroids may be used at any time• Treatment should be reviewed every 3-6 months• For exercise-induced asthma, using terbutaline or

albuterol before exercise gives protection for 2 hours

Page 26: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Devices Used in Asthma Therapy

• Uses a stream of air that flows through liquid medication to make a fine mist to be inhaled

• Very effective• Must be cleaned and

taken care of to reduce risk of contamination

Nebulizer

Page 27: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Devices Used in Asthma Therapy

• Metered Dose Inhaler (MDI)– Contains medication and compressed air– Delivers a specific amount of medication with

each puff

Page 28: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Devices Used in Asthma Therapy

• Metered Dose Inhaler (MDI)– Contains medication and compressed air– Delivers a specific amount of medication with

each puff

• Spacer– Used with MDIs to help get medication into the

lungs instead of depositing on the back of the throat

Page 29: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Devices Used in Asthma Therapy

• Dry powder inhalers– Starting to replace MDIs– The patient turns the dial and a capsule full of

powder is punctured– The patient then inhales the powder

Page 30: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Asthma AgentsBronchodilators

• albuterol (Proventil, Proventil HFA, Ventolin, Ventolin HFA)

• epinephrine (EpiPen)• formoterol (Foradil)• ipratropium (Atrovent)• ipratropium-albuterol (Combivent)• isoetharine (Beta-2)

Drug List

Page 31: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Asthma AgentsBronchodilators

• isoproterenol (Isuprel)• levalbuterol (Xopenex)• metaproterenol (Alupent)• pirbuterol (Maxair)• salmeterol (Serevent)• terbutaline (Brethine)• tiotropium (Spiriva)

Drug List

Page 32: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

albuterol (Proventil, Proventil HFA, Ventolin, Ventolin HFA)

• Used in cases of airway obstruction

• Relaxes bronchial smooth muscle with little effect on heart rate

• HFAs do not contain chlorofluorocarbons which deplete the ozone

Page 33: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

levalbuterol (Xopenex)

• Isomer of albuterol

• Has fewer side effects than albuterol

• Must be used with a nebulizer

• Vials should be stored in foil package; once the foil is opened, vials must be used within 1 to 2 weeks

Page 34: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

salmeterol (Serevent)

• Indicated for maintenance therapy

• Has a long duration of action

• Onset of action is 30-60 minutes

• Should not be used in rescue situations

• Available in MDI and dry powder inhaler

Page 35: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

ipratropium (Atrovent)

• Blocks ACh in bronchial smooth muscle causing bronchodilation

• Used for prevention of attacks, not rescue situations

Page 36: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Atrovent Dispensing Issues

• If patient is allergic to peanuts, they may be allergic to the suspending agent in this inhaler

Warning!

Page 37: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

ipratropium-albuterol (Combivent)

• Combination bronchodilator

• Should inquire about peanut allergy as well

Page 38: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Asthma AgentsXanthine Derivatives

• aminophylline (Truphylline)

• theophylline

Drug List

Page 39: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Asthma AgentsLeukotriene Inhibitors

• montelukast (Singulair)

• zafirlukast (Accolate)

• zileuton (Zyflo)

Drug List

Page 40: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Leukotrienes

• Increase edema, mucus, and vascular permeability

• 100 to 1,000 times more potent than histamine

• Inhibitors block the synthesis of or the body’s response to leukotrienes

Page 41: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

montelukast (Singulair)

• Indicated for the prophylaxis and chronic treatment of asthma

• Do not use to treat acute attacks

• Approved for use in children over 12 months

• Used once a day

• Available in tablet and chewable tablet

Page 42: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Asthma AgentsCorticosteroids

• beclomethasone (Beconase,Vanceril)

• budesonide (Pulmicort, Rhinocort)

• dexamethasone (Decadron)

• flunisolide (AeroBid)

• fluticasone (Flonase, Flovent)

• hydrocortisone (Solu-Cortef)

Drug List

Page 43: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Asthma AgentsCorticosteroids

• methylprednisolone (Medrol Dose-Pack, Solu-Medrol)

• mometasone furoate (Nasonex)

• prednisolone (Orapred, Pediapred)

• prednisone (Deltasone)

• triamcinolone (Azmacort, Nasacort AQ)

Drug List

Page 44: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Corticosteroids

• Anti-inflammatory agent to suppress the immune response

• Inhibit late-phase inflammatory reaction

• Reserved for more difficult cases

Page 45: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Corticosteroid Side Effects

• Primary:– Oral candidiasis– Irritation and burning of the nasal mucosa– Hoarseness– Dry mouth

Page 46: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Corticosteroid Side Effects

• If used for a long period of time, it can cause:– Growth of facial hair in females– Breast development in males– Weight gain– “buffalo hump” – “moon face”– Easy bruising – Edema

Page 47: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Corticosteroid Dispensing Issues

• Patient should rinse mouth with water after using these inhalers to prevent oral candidiasis

• Patient should be taught how to correctly use these medications

Warning!

Page 48: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

fluticasone (Flonase, Flovent)

• Flonase is a nasal spray used for allergies

• Flovent is an MDI that comes in 3 different strengths

• May take 2 weeks to reach maximum benefit

Page 49: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

budesonide (Entocort EC, Pulmicort Respules, Pulmicort Turbuhaler,

Rhinocort)

• Pulmicort Turbuhaler – dry powder inhaler that is breath activated and is easier to use

• Coughing is a less frequent side effect

Page 50: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

mometasone furoate (Nasonex)

• Decreases the amount of inflammation- causing chemicals that are released

• Reverses dilation and permeability of vessels

• May be used in children over 12 to prevent allergy symptoms

Page 51: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Asthma AgentsMast Cell Stabalizers

• cromolyn sodium (Crolom, Gastrocrom, Intal, Opticrom)

• nedocromil (Tilade)

Drug List

Page 52: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Asthma AgentsMonoclonal Antibody

• omalizumab (Xolair)

Drug List

Page 53: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Asthma AgentsCombination

• fluticasone-salmeterol (Advair Diskus)

Drug List

Page 54: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

fluticasone-salmeterol (Advair Diskus)

• Combines corticosteroid (anti-inflammatory) and a beta-2 agonist

• Indicated for maintenance therapy in patients 12 years and older

• Available in powder for inhalation

Page 55: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Discussion

Are there any problems with this order?

Page 56: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Discussion

Are there any problems with this order?

Answer: Serevent should be used BID and shouldn’t receive 3 MDIs at a time…

Page 57: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Emphysema

• Characterized by destruction of air sacs

• Air sacs are not able to exchange oxygen and carbon dioxide

• Causes tachypnea which gives the patient a flushed look

Page 58: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Major Risk Factors For Emphysema

• Cigarette smoking

• Occupational exposure

• Air pollution

• Genetic factors

Page 59: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Bronchitis

• Lining of the bronchial airways becomes inflamed

• Acute

• Chronic

Page 60: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Bronchitis

• Lining of the bronchial airways becomes inflamed

• Acute – Runs a brief course

• Chronic – Longer lasting condition

Page 61: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Chronic Bronchitis

• Difficult to breathe out

• Characterized by cough that produces purulent, green, or blood-streaked sputum

• Major Risk Factors:– Cigarette smoking, occupational hazards,

fumes, environmental pollution, bacterial infection

Page 62: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

The Body’s Defense System

• In a properly functioning lung:– Immune system provides good protection– Adequately removes potentially infectious

agents from the lungs

Page 63: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

The Body’s Defense System

• In a properly functioning lung:– Immune system provides good protection– Adequately removes potentially infectious

agents from the lungs

• Types of Body Defense Cells:– Ciliary carpet: rhythmically moves fluid or

mucus away from the lungs

Page 64: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

The Body’s Defense System

• Types of Body Defense Cells:– Goblet cells: produce mucus, increase due to

smoking– Epithelial cells: produce protein-rich exudate– Type I pneumocytes: phagocytes– Type II pneumocytes: synthesize and secrete

surfactant

Page 65: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Cellular Makeup of an Alveolus and Capillary Supply

Page 66: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

COPD Agents

• acetylcysteine (Acetadote, Mucomyst) – Mucolytic

• dornase alfa (Pulmozyme) – Mucolytic

• tiotropium (Spiriva) – Anticholinergic

Drug List

Page 67: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Other Emphysema and Bronchitis Treatments

• Antibiotics are sometimes needed

• Oxygen therapy

• Expectorants (Water!!!)

• Receive flu and pneumonia vaccinations each year

Page 68: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Other Lung Diseases

• Prevention:– Do not smoke– Avoid second-hand smoke– Avoid air pollution– Get vaccinated– WASH HANDS

Page 69: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Pneumonia

• Common lung disease that affects all ages

• 3 ways to become infected:1. Inhalation of aerosolized particles

2. Entrance through the bloodstream

3. Aspiration

• Aspiration commonly occurs during sleep

Page 70: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

X-Ray of Pneumonic Lung

X-Rays can be performed to check for pneumonia or to see the progression of the disease.

Page 71: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Discussion

Why is cigarette smoke implicated in many diseases that affect the lung?

Page 72: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Discussion

Why is cigarette smoke implicated in many diseases that affect the lung?

Answer: Destroys the walls of the lungs, including the protective mechanisms

Page 73: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Cystic Fibrosis

• Hereditary disease that affects the gastrointestinal and respiratory systems

• This is a fatal disease; death is associated with the pulmonary system

• Patients have an increase in production and viscosity of mucus as well as decreased pancreatic enzymes needed for digestion

Page 74: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Cystic Fibrosis Therapy

• Percussion

• Nebulizer therapy

• Antibiotic therapy

• Strict diets

Page 75: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Respiratory Distress Syndrome (RDS)

• Occurs in newborns during the first few hours of life

• Acute asphyxia with hypoxia and acidosis inhibit the production of surfactant

Page 76: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Respiratory Distress Syndrome (RDS)

• Occurs in newborns during the first few hours of life

• Acute asphyxia with hypoxia and acidosis inhibit the production of surfactant

• 2 Causes:– Prematurity– Maternal diabetes

Page 77: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Surfactants for RDS

• beractant (Survanta)

• calfactant (Infasurf)

• colfosceril palimate (Exosurf Neonatal)

• poractant alfa (Curosurf)

Drug List

Page 78: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

beractant (Survanta)

• Drug of choice for RDS

• Extracted from cattle lung

• Lowers surface tension between the alveoli to keep them from collapsing

Page 79: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

beractant (Survanta)

• Prophylactic therapy: for high risk infants

• Rescue therapy: to be used within 8 hours of birth

Page 80: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Tuberculosis

• Caused by mycobacterium tuberculosis

• Primarily affects the lungs, but may also affect the bone and kidney tissue

• Transmission: through inhaled droplets from an infected person (droplets descend 1-2 inches per hour)

Page 81: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Tuberculosis

• Seen primarily in:– Alcoholics– Prison population– Immunocompromised– Elderly

Page 82: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

2 Classes of Tuberculosis

1. Exposed, but no disease• Test positive on TB test, but show no signs of

active disease

Page 83: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

2 Classes of Tuberculosis

1. Exposed, but no disease• Test positive on TB test, but show no signs of

active disease

2. Exposed and have active organisms• Signs and symptoms are present: weight loss,

spitting blood, night sweats, night fever, chest pain, malaise

Page 84: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

TB Test

• A protein derivative from killed bacteria is injected intradermally

• If the patient has been exposed to this organism, the test will be positive

• If positive, the patient must have x-rays taken to look for signs of active disease

Page 85: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Goals of TB Therapy

1. Initiate treatment promptly

2. Convert sputum culture to negative ASAP

3. Achieve cure without relapse

4. Prevent emergence of drug-resistant strains

Page 86: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Tuberculosis Agents

• capreomycin (Capastat)

• ciprofloxacin (Cipro)

• cycloserine (Seromycin)

• ethambutol (Myambutol)

• ethionamide (Trecator-SC)

• isoniazid(INH) (Laniazid, Nydrazid)

Drug List

Page 87: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Tuberculosis Agents

• isoniazid-pyrazinamide-rifampin (Rifater)• isoniazid-rifampin (Rifamate)• ofloxacin (Floxin)• pyrazinamide • rifampin (Rifadin, Rimactane)• rifapentine (Priftin)• streptomycin

Drug List

Page 88: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Treatment Regimens

• Patients with no symptoms, but a positive x-ray:– INH 300 mg QD X 12 months

Page 89: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Treatment Regimens

• Patients with no symptoms, but a positive x-ray:– INH 300 mg QD X 12 months

• Patients with clinical disease:– At least 2 agents at a time to prevent drug-

resistance

Page 90: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Multidrug Resistant Tuberculosis

• New strain has developed that is resistant to several drugs

• Risk factors for acquiring MDR-TB:– Being exposed to MDR-TB– Not completing TB therapy– Being prescribed the inappropriate agents– Having immune deficiencies– Having recurrence of TB

Page 91: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

rifampin Side Effects

• Causes a reddish-orange discoloration of:– Urine– Tears, sweat– Other body fluids

• Can permanently stain soft contact lenses

Page 92: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Discussion

Why is patient compliance such an issue with tuberculosis patients?

Page 93: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Discussion

Why is patient compliance such an issue with tuberculosis patients?

Answer: Length of therapy, side effects, inherent in some patient groups

Page 94: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Histoplasmosis

• Fungal pulmonary disease• Caused by breathing in spores from

droppings of chickens, pigeons, starlings and other birds and bats

• Called the summer flu because of the flu-like symptoms

• Amphotericin B and itraconazole are used for treatment

Page 95: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Cough and Cold

• Common colds are the most prevalent respiratory tract infections

• Symptoms:– Mild malaise– Runny nose– Sneezing– Scratchy throat– Fever

Page 96: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Colds

• Bacterial sinusitis and otitis media are frequent complications warranting antibiotic therapy

• OTC remedies are often used for symptom relief

• Technicians should be knowledgeable about OTC preparations and be able to explain proper uses and side effects

Page 97: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Antitussives

• Coughing clears the airways of excess secretions and foreign materials

• Antitussives can be useful for dry, nonproductive coughs by causing:

1. CNS depression of the cough center (reflex)

2. Suppression of the nerve receptors in the respiratory tract

Page 98: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Cough Reflex

• Stimulated by stretch receptors and irritant receptors

• Follows a series of 6 events:1. Inspiration interrupts regular breathing rhythm

2. Thorax and abdominal muscles contract rapidly

3. Airway closes

Page 99: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Cough Reflex

4. Peristaltic muscular wave moves over the bronchi and bronchioles

5. Pressure forces the glottis open and the laryngeal muscles relax

6. Air flows outward, carrying mucus and foreign bodies

Page 100: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Antitussives

• benzonatate (Tessalon)

• codeine

• dextromethorphan (Delsym)

• diphenhydramine (Benadryl)

• hydrocodone-homatropine (Hycodan)

• promethazine-codeine

Drug List

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AntitussivesDextromethorphan Combos

• dextromethorphan-pseudoephedrine-brompheniramine (Bromfed-DM, Myphetane DX)

• guaifenesin-dextromethorphan (Mucinex DM)

• promethazine-dextromethorphan

Drug List

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codeine

• Considered the “Gold Standard”

• Has a drying effect on respiratory mucosa– Dangerous for patients with asthma or

emphysema

• Can be purchased without a prescription in some states; dispensing must be done by the pharmacist

Page 103: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Codeine Side Effects

• Nausea

• Drowsiness

• Light-headedness

• Constipation

Page 104: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

benzonatate (Tessalon)

• Has local anesthetic effects

• Numbs the stretch receptors in the airway, lungs, and pleura

• Very dangerous if chewed

Page 105: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

dextromethorphan (Delsym)

• Works as well as codeine without analgesic properties

• Does not depress respiration or have abuse potential

• Often combined with other cough and cold preparations

Page 106: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Expectorants

• Help rid the lungs and airway of mucus when coughing

• Decrease thickness and stickiness of mucus, decrease viscosity and increase expectoration of mucus

• Used for dry and productive coughs

Page 107: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Water

• Can work as well as, if not better than, medication expectorants

• Staying well-hydrated thins mucus and allows for easier expectoration

Page 108: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Expectorants

• guaifenesin (Mucinex)

• potassium iodide (Iossat, Lugol solution)

• guaifenesin-codeine (Robitussin A-C)

• guaifenesin-pseudoephedrine (Mucinex D)

Drug List

Page 109: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

guaifenesin

• Loosens phlegm and thins bronchial secretions

• Available in capsule, tablet, sustained-release, and liquid forms

• Frequently combined with other cough and cold preparations

• Okay for patients with asthma or emphysema

Page 110: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Decongestants

• Swelling and stuffiness are caused by vasodilation and leakage of fluids into the nasal mucosa

• Decongestants cause constriction which promotes drainage, improves nasal ventilation, and relieves stuffiness, which then allows the sinus cavities to drain

Page 111: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Decongestants

• Length of therapy should not exceed 3-5 days

• Topical decongestants may cause rebound rhinitis medicamentosa

• Available in topical and oral forms

Page 112: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Decongestant Dispensing Issues

• Should be avoided in patients with:– Diabetes– Heart disease– Uncontrolled hypertension– Hyperthyroidism– Prostatic hypertrophy– Tourette’s syndrome

Warning!

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Decongestants

• pseudoephedrine (Sudafed)

Combinations:

• APAP-clemastine-pseudoephedrine (Tavist Allergy/Sinus/Headache)

• brompheniramine-pseudoephedrine (Efidac 24)

Drug List

Page 114: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

DecongestantsPseudoephedrine Combos

• cetirizine-pseudoephedrine (Zytrec-D)

• dexbrompheniramine-pseudoephedrine (Drixoral)

• fexofenadine-pseudoephedrine (Allegra-D)

• ibuprofen-pseudoephedrine (Advil Cold and Sinus, Sine-Aid IB)

Drug List

Page 115: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

DecongestantsPseudoephedrine Combos

• loratadine-pseudoephedrine (Claritin D)

• naproxen-pseudoephedrine (Aleve Cold and Sinus)

Drug List

Page 116: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Decongestant Side Effects

• Oral:– Anxiety– CNS stimulation– Dizziness– Hallucinations– Headache– Increased BP– Increased heart rate– Insomnia– Tremor

• Topical:– Burning sensation– Contact dermatitis– Dry mouth– Rhinitis

medicamentosa– Sneezing– Stinging sensation

Page 117: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

pseudoephedrine (Sudafed)

• Most-used decongestant; available in many combinations

• Current evidence shows that if hypertension is well controlled, these patients may be able to take decongestants

• Will very likely become a prescription drug due to abuse potential

Page 118: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Antihistamines

• Histamine is found throughout the body

• Causes increased gastric secretions, increased heart rate, and mediates hypersensitivity

• 2 Types of histamine receptors:– H1 – located in upper respiratory system

– H2 – located in gastrointestinal tract

Page 119: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Antihistamines

• Well absorbed and widely distributed in tissues

• Crosses the blood-brain barrier– Causes sedation

• Crosses the placenta– Adversely affects fetus

Page 120: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Antihistamines (H1)

• azatadine (Optimine)

• azelastine (Astelin, Optivar)

• cetirizine (Zyrtec)

• clemastine (Tavist Allergy)

• cyproheptadine

• desloratadine (Clarinex)

Drug List

Page 121: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Antihistamines (H1)

• diphenhydramine (Benadryl)

• fexofenadine (Allegra)

• hydroxyzine (Atarax, Vistaril)

• loratadine (Claritin)

• meclizine (Antivert)

• promethazine (Phenergan)

Drug List

Page 122: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Antihistamine (H1) Combinations

• brompheniramine-dextromethorphan-pseudoephedrine (Bromfed-DM)

• chlorpheniramine-pseudoephedrine (Chlor-Trimeton)

• hydrocodone-chlorpheniramine (Tussionex)

• triprolidine-pseudoephedrine

Drug List

Page 123: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Therapeutic Uses

• Allergies• Insomnia• Rash, edema, and hay

fever• Cough• Vertigo• Nausea and vomiting• Serum sickness

• Control venom reactions

• Lessens extrapyramidal side effects of antipsychotics

• Prevent certain drug reactions and allergies

• Hypersensitivity

Page 124: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Hypersensitivity Reactions

• Excessive immune response to a foreign agent

• Can range from a rash to a deadly reaction

Page 125: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Antihistamine Side Effects

• Anticholinergic responses– Dry mouth– Drying of the URT mucosa– Blurred vision– Constipation– Urinary retention

• Hyperactivity in some children• Sedation is the most common

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Smoking Cessation

• On average, cigarette smokers lose about 15 years of life

• The smoke contains 4,000 chemical compounds with at least 43 carcinogens

• Secondhand smoke contains all 43 carcinogens

Page 127: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Smoking

• Can lead to:– Leukemia

– Cancers of the mouth, pharynx, larynx, esophagus, pancreas, cervix, kidney, bladder, ovaries, uterus, and prostate

• Increases risk of:– Heart disease

– COPD

– Stroke

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Smoking

• Is related to birth defects of smoking mothers

• Secondhand smoke puts children at risk of developing asthma

• Nicotine can react with certain medications

Page 129: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Nicotine Effects

• CNS and PNS stimulation and depression

• Respiratory stimulation

• Skeletal muscle relaxation

• Increase in BP

• Increase in heart rate• Increase in cardiac

output• Increase in oxygen

consumption• Physical and

psychological dependence

Page 130: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Personal Benefits to Smoking Cessation

• Improved performance in sports and sex

• Better-smelling home, car, clothing, and breath

• Economic savings• Freedom from

addiction• Healthier babies

• Improved health• Improved self-esteem• Improved sense of

taste and smell• No concern about

exposing others to smoke

• Setting a good example

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5 Step Quit Plan

1. Set a date

Page 132: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

5 Step Quit Plan

1. Set a date

2. Inform family, friends and coworkers

Page 133: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

5 Step Quit Plan

1. Set a date

2. Inform family, friends and coworkers

3. Remove cigarettes from daily life

Page 134: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

5 Step Quit Plan

1. Set a date

2. Inform family, friends and coworkers

3. Remove cigarettes from daily life

4. Review previous attempts and analyze what caused relapse

Page 135: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

5 Step Quit Plan

1. Set a date

2. Inform family, friends and coworkers

3. Remove cigarettes from daily life

4. Review previous attempts and analyze what caused relapse

5. Anticipate challenges

Page 136: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Smoking Cessation

• Abstinence is the key

• Some fears that keep people from quitting:– Weight gain– Nicotine withdrawal

Page 137: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Symptoms of Nicotine Withdrawal

• Anxiety• Craving tobacco• Decreased blood

pressure and heart rate• Depression• Difficulty in

concentrating• Drowsiness

• Frustration, irritability• Gastrointestinal

disturbances• Headache• Hostility• Increased appetite• Increased skin temp• Insomnia

Page 138: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Smoking Cessation Agents

• bupropion (Wellbutrin SR, Zyban)

• nicotine (Commit, Habitrol, Nicoderm CQ, Nicorette, ProStep, Nicotrol)

Drug List

Page 139: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Smoking Cessation Agent Dispensing Issues

• Smoking while on nicotine replacement therapy could cause signs of nicotine excess

Warning!

Page 140: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Symptoms of Nicotine Excess

• Abdominal pain• Confusion• Diarrhea• Dizziness• Headache• Hearing loss

• Hypersalivation• Nausea• Perspiration• Visual disturbances• Vomiting• Weakness

Page 141: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Smoking Cessation Agent Dispensing Issues

• Lozenges should not be chewed

• Patch application site should be rotated to prevent skin reactions

Warning!

Page 142: Chapter 9 Respiratory Drugs Chapter 9 Topics Asthma Emphysema Other Lung Diseases Cough and Cold Smoking Cessation.

Discussion

You are trying to get a friend to stop smoking. Name 5 reasons he/she should quit.


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