What is the primary purpose of the EKG test?

The primary purpose of the EKG (electrocardiogram) test is to assess the electrical activity of the heart. This test provides critical information about how the heart is functioning electrically by recording the timing and strength of these electrical signals as they travel through the heart. By analyzing the results of an EKG, healthcare providers can identify various conditions such as arrhythmias, ischemia, or heart attacks, and can assess the heart's overall rhythm and health status.

While blood pressure measurement is important for evaluating cardiovascular health, it is not what an EKG measures. An EKG also does not directly provide information about heart size, which is typically assessed through imaging techniques like echocardiography. Additionally, an EKG does not analyze respiratory function, as that is typically evaluated with tests focused on the lungs and breathing mechanics. Hence, the EKG is specifically designed to focus on the electrical aspects of heart function, making it a crucial tool in cardiology.