2 doctors weighed in:

What causes tachypnea and tachycardia in bacterial pneumonia?

2 doctors weighed in
Dr. Michael DePietro
Internal Medicine - Pulmonary Critical Care
1 doctor agrees

In brief: 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.

In brief: 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.
Dr. Michael DePietro
Dr. Michael DePietro
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