- Acute Respiratory Failure
- Chronic Obstructive Pulmonary Disease
- Acute Respiratory Infections
- Emerging Infections
- Diagnostic Tests for Review
- Pharmacology Categories for Review
- Exam Prep Questions
Chronic Obstructive Pulmonary Disease
Chronic obstructive pulmonary disease (COPD) exists when prolonged disease or injury has made the lungs less capable of meeting the body’s oxygen needs. Examples of COPD include chronic bronchitis, emphysema, and asthma.
Chronic bronchitis, an inflammation of the bronchi, leads to chronic lung infections. These infections are characterized by productive cough and dyspnea. Both chronic bronchitis and emphysema are the result of cigarette smoking and have similar symptoms requiring similar interventions.
Emphysema is the irreversible overdistention of the airspaces of the lungs, which results in destruction of the alveolar walls. Clients with emphysema are classified as pink puffers or blue bloaters. Pink puffers may complain of exertional dyspnea without cyanosis. Blue bloaters develop chronic hypoxia, cyanosis, polycythemia, cor pulmonale, pulmonary edema, and eventually respiratory failure.
Physical assessment reveals the presence of a barrel chest, use of accessory muscles, coughing with the production of thick mucoid sputum, prolonged expiratory phase with grunting respirations, peripheral cyanosis, and digital clubbing.
In identifying emphysema, a chest x-ray reveals hyperinflation of the lungs with flattened diaphragm. Pulmonary studies show that the residual volume is increased while vital capacity is decreased. Arterial blood gases reveal hypoxemia.
Many symptoms of chronic bronchitis and emphysema are the same; therefore, medications for the client with chronic bronchitis and emphysema include bronchodilators, steroids, antibiotics, and expectorants. Oxygen should be administered via nasal cannula at 2–3 liters/minute. Close attention should be given to nutritional needs, avoidance of respiratory irritants, prevention of respiratory infections, providing oral hygiene, and teaching regarding medications.
Asthma is the most common respiratory condition of childhood. Intrinsic (nonallergenic) asthma is precipitated by exposure to cold temperatures or infection. Extrinsic (allergenic or atopic) asthma is often associated with childhood eczema. Both asthma and eczema are triggered by allergies to certain foods or food additives. Introducing new foods to the infant one at a time helps decrease the development of these allergic responses. Easily digested, hypoallergenic foods and juices should be introduced first. These include rice cereal and apple juice.
Symptoms of asthma include expiratory wheeze; shortness of breath; and a dry, hacking cough, which eventually produces thick, white, tenacious sputum. In some instances an attack may progress to status asthmaticus, leading to respiratory collapse and death.
Management of the client with asthma includes the use of bronchodilators (xanthines and adrenergics), steroids, antibiotics, and oxygen.