During a therapy session, which vital sign is critical to monitor for safety?

Monitoring heart rate during a therapy session is critical for safety because it provides immediate insight into the cardiovascular response of the patient to physical activity and exercise. An increase in heart rate is a normal response to physical exertion; however, if the heart rate becomes excessively high or shows irregular patterns, it may indicate that the patient is overexerting themselves, experiencing distress, or suffering from an underlying cardiac issue.

In therapy settings, ensuring that the patient’s heart rate remains within safe parameters helps prevent complications, such as potential cardiac events or fainting. It also allows the therapist to adjust the intensity of the exercises being performed based on the patient’s response. Monitoring heart rate can help ensure that the patient is working within their limits, promoting both safety and effectiveness in the treatment plan.

Other factors like weight, vision, and walking speed can be relevant in various contexts of therapy, but they do not provide the same immediate feedback about the patient's cardiovascular status and overall safety during active rehabilitation sessions.