Which of the following is an abnormal finding for respiratory rate?

Tachypnea is characterized by an increased respiratory rate, often exceeding 20 breaths per minute in adults. This finding is considered abnormal, as it can indicate the body’s response to various conditions that require increased oxygen intake, such as fever, anxiety, pain, or respiratory distress.

In contrast, a normal respiratory rate typically falls between 12 to 20 breaths per minute; thus, a normal rate is not considered an abnormal finding. Eupnea refers specifically to breathing within the normal range, which again reflects health and is not abnormal. Bradypnea, characterized by a slower than normal respiratory rate (less than 12 breaths per minute), is also abnormal but represents a different physiological response, such as involvement of the central nervous system or metabolic issues. Therefore, tachypnea stands out as an abnormal finding indicating a potential health issue requiring further evaluation.