List of terms of lung size and activity

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Following are terms that specify a type of lung size and/or activity. More specific definitions may be found in individual articles.

  • Eupnea – normal breathing
  • Apnea – absence of breathing
  • Bradypnea – decreased breathing rate
  • Dyspnea or shortness of breath – sensation of respiratory distress
  • Hyperaeration/Hyperinflation – increased lung volume
  • Hyperpnea – fast and deep breathing
  • Hyperventilation – increased breathing that causes CO2 loss
  • Hypopnea – slow and shallow breathing
  • Hypoventilation – decreased breathing that causes CO2 gain
  • Labored breathing – physical presentation of respiratory distress
  • Tachypnea – increased breathing rate
  • Orthopnea – Breathlessness in lying down position relieved by sitting up or standing
  • Platypnea – Breathlessness when seated or standing, relieved by lying flat
  • Trepopnea – Breathlessness when lying flat relieved by lying in a lateral position
  • Ponopnea – Painful breathing

See also