What is a commonly used tool for checking vital signs?

A blood pressure monitor is a commonly used tool for checking vital signs because it specifically measures blood pressure, which is a critical indicator of cardiovascular health. Blood pressure is a vital sign that helps assess a patient's circulatory status and overall heart function. Monitoring blood pressure is essential in a variety of clinical situations, such as assessing for hypertension or hypotension, guiding treatment decisions, and evaluating the effectiveness of interventions.

While instruments like a pulse oximeter, stethoscope, and thermometer also check vital signs (oxygen saturation, heart sounds, and body temperature, respectively), the blood pressure monitor stands out as a dedicated device specifically for measuring blood pressure, making it a crucial tool in both pre-hospital and clinical settings.