Which of the following describes an increased breathing rate?

Tachypnea specifically describes an increased breathing rate and is a medical term used to signify faster-than-normal respiration. This condition often occurs in response to various physiological factors such as exercise, anxiety, fever, or underlying health issues that require the body to take in more oxygen or expel more carbon dioxide.

In contrast, tachycardia refers to an increased heart rate, not breathing rate, while bradypnea indicates a slower-than-normal breathing rate. Dyspnea describes the sensation of difficulty or labored breathing, which does not necessarily imply a change in the rate of breathing itself. Therefore, tachypnea is the term that accurately identifies an increase in breathing rate.