True or False: An ECG can be used to determine blood pressure.

An electrocardiogram (ECG) records the electrical activity of the heart and is primarily used to assess heart rhythm, heart size, and the presence of conditions such as ischemia or myocardial infarction. While it provides critical information about the heart's functioning and can help detect various cardiac abnormalities, it does not measure blood pressure directly.

Blood pressure refers to the force exerted by circulating blood on the walls of blood vessels and is determined using a sphygmomanometer or other specialized devices designed to measure the pressure in arteries. The ECG does not provide this type of mechanical measurement. Therefore, stating that an ECG can be used to determine blood pressure is not accurate, solidifying the rationale for the answer being false. Understanding the distinct functions of these two assessments is crucial for effective clinical evaluation.