Respiratory System Disorders
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Questions and Answers

What is the name of the persistent inflammatory process responsible for the hyperreactivity of the bronchi in asthma?

Inflammation in the bronchi

Which of these is NOT a symptom of COPD?

  • Cough
  • Itchy, watery eyes (correct)
  • Fatigue
  • Excess mucus production

Smoking cessation is recommended for all patients regardless of the age or severity of COPD.

True (A)

What is the term used to describe the irreversible obstruction of airflow that is a characteristic feature of COPD?

<p>Irreversible airflow obstruction</p> Signup and view all the answers

What is the most important group of drugs used for long-term asthma control and inhibiting the underlying airway inflammation?

<p>Inhaled corticosteroids</p> Signup and view all the answers

Which of the following is an adverse effect of oral corticosteroids?

<p>Hyperglycemia (D)</p> Signup and view all the answers

What is the name of the protein that inhibits phospholipase A2, thus preventing the formation of prostaglandins, leukotrienes, and PAF, in the anti-inflammatory action of glucocorticoids?

<p>Lipocortin</p> Signup and view all the answers

Mineralocorticoids are primarily responsible for regulating salt and water metabolism.

<p>True (A)</p> Signup and view all the answers

Which of these is NOT a therapeutic use of corticosteroids?

<p>Treatment of bacterial infections (C)</p> Signup and view all the answers

What is the name of the condition that results from a deficiency in corticosteroids produced by the adrenal cortex?

<p>Addison disease</p> Signup and view all the answers

What is the name of the medical emergency that arises from a deficiency in cortisol and is treated with intravenous hydrocortisone and fluids?

<p>Acute adrenal insufficiency</p> Signup and view all the answers

What is the key symptom of allergic rhinitis that antihistamines are effective in relieving?

<p>Sneezing</p> Signup and view all the answers

Second-generation antihistamines have a higher risk of sedative effects than first-generation antihistamines.

<p>False (B)</p> Signup and view all the answers

Terfenadine is a second-generation antihistamine with a low risk of cardiac side effects.

<p>False (B)</p> Signup and view all the answers

What is the term used to describe the physiological antagonism of histamine effects?

<p>Physiological antagonism</p> Signup and view all the answers

What is the term used to describe the competitive blockade of histamine receptors by antihistamines?

<p>Competitive blockade</p> Signup and view all the answers

H1 antihistamines are effective in treating asthma.

<p>False (B)</p> Signup and view all the answers

Which of these is NOT a common side effect of first-generation antihistamines?

<p>Cardiovascular problems (A)</p> Signup and view all the answers

Which of the following is a common side effect of benzonatate?

<p>Numbness of the tongue (A)</p> Signup and view all the answers

Coughing is always a sign of a serious underlying illness.

<p>False (B)</p> Signup and view all the answers

Which of the following is NOT a common side effect of opioid-based cough suppressants?

<p>Increased appetite (A)</p> Signup and view all the answers

What is the name of the synthetic derivative of morphine that is used as a cough suppressant with a lower risk of addiction?

<p>Dextromethorphan</p> Signup and view all the answers

What is the name of the cough suppressant that acts peripherally by anesthetizing the stretch receptors in the respiratory passages?

<p>Benzonatate</p> Signup and view all the answers

Histamine is released only in response to an allergic reaction.

<p>False (B)</p> Signup and view all the answers

Histamine acts as a neurotransmitter in the brain.

<p>True (A)</p> Signup and view all the answers

H2 receptor antagonists are effective at treating allergic reactions.

<p>False (B)</p> Signup and view all the answers

Second-generation H1 antagonists are more selective for H1 receptors and have fewer anticholinergic effects than first-generation H1 antagonists.

<p>True (A)</p> Signup and view all the answers

First-generation H1 antagonists can be used safely to treat patients with epilepsy due to a lack of effect on the central nervous system.

<p>False (B)</p> Signup and view all the answers

Sodium cromoglicate can suppress IgE-induced histamine release from mast cells

<p>True (A)</p> Signup and view all the answers

Which of the following is NOT a mechanism by which drugs can oppose the effects of histamine?

<p>Blocking acetylcholine receptors (B)</p> Signup and view all the answers

Corticosteroids are considered the most effective long-term controllers of choice for managing asthma.

<p>True (A)</p> Signup and view all the answers

Glucocorticoids suppress the release of histamine by directly inhibiting histamine synthesis.

<p>False (B)</p> Signup and view all the answers

What is the primary human glucocorticoid that is produced in a diurnal pattern, peaking early in the morning and decreasing in the late afternoon?

<p>Cortisol</p> Signup and view all the answers

Glucocorticoids promote protein synthesis in all tissues.

<p>False (B)</p> Signup and view all the answers

Mineralocorticoids are mainly involved in controlling blood sugar levels.

<p>False (B)</p> Signup and view all the answers

What is the name of the condition caused by a deficiency in corticosteroids, characterized by weakness, fatigue, and low blood pressure?

<p>Addison disease</p> Signup and view all the answers

Long-acting beta-2 agonists are considered first-line treatment for COPD for patients with mild symptoms and low risk.

<p>False (B)</p> Signup and view all the answers

Tiotropium is a short-acting anticholinergic agent used for the treatment of COPD.

<p>False (B)</p> Signup and view all the answers

Intranasal corticosteroids are the most effective treatment for allergic rhinitis.

<p>True (A)</p> Signup and view all the answers

What is the term used to describe the narrowing of the airways during an asthma attack, often provoked by allergens, irritants, or exercise?

<p>Bronchospasm</p> Signup and view all the answers

What is the name of the drug that competitively inhibits type III and type IV phosphodiesterase, resulting in bronchodilation and is less commonly used in asthma treatment nowadays?

<p>Theophylline</p> Signup and view all the answers

Omalizumab is a monoclonal antibody that selectively binds to mast cells to suppress the release of histamine, preventing allergic reactions.

<p>True (A)</p> Signup and view all the answers

First-generation antihistamines are generally preferred over second-generation antihistamines for the treatment of allergic rhinitis.

<p>False (B)</p> Signup and view all the answers

Systemic corticosteroids are the preferred treatment option for patients with chronic rhinitis.

<p>False (B)</p> Signup and view all the answers

Roflumilast is a bronchodilator used to treat acute bronchospasm in COPD.

<p>False (B)</p> Signup and view all the answers

Antihistamines are more effective in preventing allergic rhinitis symptoms than treating them once they have already developed.

<p>True (A)</p> Signup and view all the answers

Theophylline is often used as the first-line treatment for asthma.

<p>False (B)</p> Signup and view all the answers

Antihistamines are effective in relieving the symptoms of asthma.

<p>False (B)</p> Signup and view all the answers

The adrenergic agonist formulations of nasal decongestants should be used for no longer than 3 days to avoid rebound nasal congestion

<p>True (A)</p> Signup and view all the answers

Flashcards

Asthma characteristics

Asthma is a chronic respiratory disease marked by hyperreactive airways, leading to acute bronchoconstriction and shortness of breath. It is often triggered by environmental factors and biological factors like allergens, viruses and environmental chemicals.

Asthma quick relief

Short-acting beta-2 agonists (SABAs) are used to rapidly relieve asthma symptoms by relaxing airway muscles.

Asthma long-term control

Long-acting beta-2 agonists (LABAs) are used alongside inhaled corticosteroids (ICS) to maintain asthma control over an extended period by providing long-lasting bronchodilation.

Inhaled corticosteroids (ICS)

ICS are the most effective long-term control medication for asthma, reducing airway inflammation by decreasing inflammation markers and reversing airway changes. They are primarily used for long-term management of the disease rather than providing quick relief from persistent symptoms.

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COPD characteristics

COPD is a chronic lung disease with incompletely reversible air flow obstruction and mucus hypersecretion predominantly affecting the smaller airways.

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COPD treatment

COPD treatment primarily focuses on bronchodilation, using inhaled bronchodilators (beta-2 agonists and anticholinergics) to increase airflow. ICS can also be helpful in cases with additional inflammation.

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Allergic Rhinitis

Allergic rhinitis is an inflammation of the nose's mucous membranes triggered by allergens. Symptoms include itchy eyes, runny nose, and non-productive cough.

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Allergic Rhinitis Treatment

Allergic rhinitis is treated with antihistamines (H1 receptor blockers) to neutralize histamine reactions and intranasal corticosteroids to reduce inflammation.

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Study Notes

Respiratory System

  • Asthma, chronic obstructive pulmonary disease (COPD), and allergic rhinitis are common respiratory disorders.
  • Asthma is characterized by hyperresponsive airways and acute bronchoconstriction, causing shortness of breath.
  • Allergic rhinitis involves itchy, watery eyes, a runny nose, and a nonproductive cough.
  • COPD involves incompletely reversible airways obstruction and mucus hypersecretion, primarily affecting the smaller airways.
  • Drugs for respiratory conditions can be delivered topically, inhaled, orally, or parenterally. Local delivery methods are preferred to minimize systemic effects.

Asthma

  • Bronchial hyperreactivity is a result of persistent inflammation caused by biological agents (e.g., allergens, viruses), and environmental factors (e.g., ozone).
  • Inflammatory mediators from various cells (mast cells, eosinophils, neutrophils, monocytes, and macrophages) are released.
  • Some mediators, like histamine, cause immediate bronchial reactions. Others cause sustained bronchoconstriction after cell activation.
  • Preferred drugs for asthma:
    • B2-Adrenergic agonists: These relax airway smooth muscle.
      • Short-acting B2 agonists (SABAs) provide quick relief (5-30 minutes) for 4-6 hours; essential for symptomatic treatment
      • Long-acting B2 agonists (LABAs) provide longer-lasting relief (12+ hours) but aren't suitable for immediate relief. Never use LABAs alone.
    • Inhaled corticosteroids (ICS): Long-term control of asthma inflammation.
  • Asthma treatment requires a combination of drug therapies, not just SABAs (short-acting bronchodilators.)

Other Treatments for Respiratory Issues

  • Corticosteroids: Effective for long-term control in patients with persistent asthma. Reduce inflammatory cascade and improve airway responsiveness.
  • Leukotriene Modifiers: Effective adjunctive treatment to control asthma, especially when conventional therapy is insufficient, especially in combination with inhaled corticosteroids.
  • Cromolyn: A prophylactic agent that inhibits mast cell degranulation and histamine release. Suitable for mild, persistent asthma, but not for acute attacks due to slow onset.
  • Cholinergic antagonists: Block vagally-mediated airway constriction and mucus secretion. Useful, but not as first line for asthma, mainly for acute exacerbations used in combination with SABA inhalers in emergency departments.
  • Theophylline: A bronchodilator. Its use is less common now due to a narrow therapeutic window and potentially hazardous adverse effects. Usually replaced by more manageable treatments.
  • Omalizumab: A monoclonal antibody that blocks IgE. Main use in severe persistent asthma that is not well controlled with other medications.

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Description

Explore common respiratory disorders such as asthma, COPD, and allergic rhinitis. Understand their symptoms, underlying causes, and treatment delivery methods. This quiz will test your knowledge on respiratory health and its management.

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