The thoracic cavity is separated from the abdominal cavity by the diaphragm, a broad structure of muscle and fibrous tissue that is responsible for most of the effort of normal breathing.

Due to the destructive nature of COPD on patients’ lungs and well-being, timely diagnosis is key, and integrating spirometry ...

Initial differential diagnoses included pneumothorax given acute onset dyspnoea and chest pain in the setting of recent thoracic procedure; however, physical examination was notable for breath sounds ...

(2) “In the past 12 months, did you snort, gasp, or stop breathing 3 or more nights a week while you were asleep?” (3) “In the past month, did you feel excessively or overly sleepy 16-30 times a month ...