Tachypnea

Tachypnea, also spelt tachypnoea, is a respiratory rate greater than normal, resulting in abnormally rapid and shallow breathing.

Tachypnea can be an early indicator of pneumonia and other lung diseases in children, and is often an outcome of a brain injury.

[4] A third paradigm is: tachypnea is abnormally rapid and shallow respiration (though some may argue this is inaccurate as breathing differs from respiration), hyperventilation is increased rate or depth of respiration to abnormal levels causing decreased levels of blood carbon dioxide and hyperpnea is any increase in breathing rate or depth that is not normal.

Pathological causes of tachypnea include sepsis,[6] compensation for diabetic ketoacidosis or other metabolic acidosis,[6] pneumonia, pleural effusion,[6] carbon monoxide poisoning, pulmonary embolism,[6] asthma, COPD, laryngospasm, allergic reaction causing airway edema, foreign body aspiration, tracheobronchomalacia, congestive heart failure,[6] anxiety states, haemorrhage,[6] or many other medical issues.

The word tachypnea (/ˌtækɪpˈniːə/) uses combining forms of tachy- + -pnea, yielding "fast breathing".