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A 39-year-old member asked:

What causes tachypnea and tachycardia in bacterial pneumonia?

1 doctor answer2 doctors weighed in
Dr. Michael Depietro
Pulmonary Critical Care 35 years experience
Several things: The cause of tachypnea and tachycardia would be the increase in inflammatory mediators seen in infection and catecholamine levels associated with the stress response. There may also be lower levels of oxygenation and increased work of breathing. If there is some degree of respiratory muscle fatigue, then this stimulates rapid shallow breathing as well. The exact mechanisms are not well understood.

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Last updated Aug 25, 2020

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