Comprehensive and Detailed Explanation (Based on NREMT standards):
Continuous Positive Airway Pressure (CPAP) is used in patients with moderate to severe respiratory distress who are conscious and able to maintain their airway. NREMT guidelines identify specific respiratory conditions where CPAP improves oxygenation and ventilation.
Option A (Chronic bronchitis) is correct because CPAP helps overcome airway collapse and improves gas exchange in COPD patients.
Option B (Pulmonary edema) is correct because CPAP reduces preload and afterload while forcing fluid out of alveoli, improving oxygenation.
Option C (Acute bronchospasms) is correct because CPAP helps splint open airways and reduce work of breathing.
Option D is incorrect because CPAP is not used for isolated myocardial infarction without respiratory failure.
Option E is contraindicated because positive pressure can worsen a pneumothorax.
Option F is contraindicated due to airway burns and potential inhalation injury.
NREMT stresses proper patient selection to prevent CPAP-related complications.
