Test 9: Respiratory Flashcards
Asthma
A disease caused by increased responsiveness of the tracheobronchial tree to various stimuli, which results in episodic narrowing and inflammation of the airways.
Antihistamines
Any drugs that oppose the action of histamines.
Rhinitis
Inflammation or irritation of the nasal passages, resulting in runny nose, nasal congestion, and/or postnasal drainage.
Rhinorrhea
A thin watery discharge from the nose.
Expectorants
An agent, such as guaifenesin, that promotes the clearance of mucus from the respiratory tract.
Viscosity
The state of being sticky or gummy.
MDI
metered-dose inhaler
Mucolytics
Pert. to a class of agents that liquefy sputum or reduce its viscosity.
Allergy
An immune response to a foreign antigen that results in inflammation and organ dysfunction.
Myalgia
Tenderness or pain in the muscles; muscular rheumatism.
Histamine
A substance produced from the amino acid histidine, which causes dilation of blood vessels, increased secretion of acid by the stomach, smooth muscle constriction (e.g., in the bronchi), and mucus production, tissue swelling, and itching (during allergic reactions).
The release of histamine from mast cells is a major component of type I hypersensitivity reactions, including asthma.
Bronchodilator
A drug that expands the bronchi by relaxing bronchial muscle.
Anti-inflammatories
An agent that suppresses or treats inflammatory diseases or conditions.
Emphysema
changes result in a loss of the normal elastic properties of the lungs and difficulty exhaling air. Alveolar septa are destroyed, and portions of the capillary bed are eliminated. Residual volume increases. Tobacco smoking is the most common cause of the tissue destruction found in emphysema. Exposure to environmental dust, smoke, or particulate pollution may also contribute to the disease.
Hypercapnia
An increase in the partial pressure of carbon dioxide in the blood, typically to levels greater than 45 or 50 mm Hg.
Elevated levels of carbon dioxide in the blood result from inadequate ventilation or from massive mismatches between ventilation and perfusion of the blood. When CO2 levels are greater than 45 mm Hg, cerebral vasodilation can occur. Some of the common symptoms of hypercapnia include dizziness, drowsiness, confusion, tremors, and twitching.
Antitussives
An agent that prevents or relieves coughing.