Which vital sign can be monitored using an electrocardiogram?

The vital sign that can be monitored using an electrocardiogram (ECG or EKG) is heart rate. An electrocardiogram works by measuring the electrical activity of the heart, which provides information about the rhythm and rate of heartbeats. It produces a graphical representation of this electrical activity, allowing healthcare providers to quickly assess the heart's performance and detect any abnormalities.

Heart rate is specifically indicated by the number of beats per minute, which can be derived from the ECG tracing. Analyzing the P waves, QRS complexes, and T waves in the ECG allows for precise calculations of the heart rate and rhythm. This makes the ECG an essential tool in monitoring and diagnosing various cardiac conditions, as understanding heart rate is critical for assessing overall cardiovascular health.

In contrast, blood pressure, respiratory rate, and body temperature are vital signs that require different monitoring tools and methods, such as sphygmomanometers for blood pressure, manual or electronic respiratory monitors for respiratory rate, and thermometers for body temperature.