What is a common method to measure blood pressure?

Using a sphygmomanometer and stethoscope is a standard and widely accepted method for measuring blood pressure. A sphygmomanometer consists of an inflatable cuff that is wrapped around the upper arm and a manometer to measure the pressure within the cuff. The stethoscope is used to listen to the sounds of blood flow, known as Korotkoff sounds, which occur as the cuff pressure is gradually released. The first sound indicates the systolic blood pressure, while the point where the sounds disappear indicates the diastolic blood pressure.

This method is favored because it provides accurate readings when performed correctly and is a long-established practice in clinical settings. While electronic monitors are also commonly used and can be convenient, relying solely on them without the option for manual measurement may overlook the educational component of understanding blood pressure physiology. The other options mentioned either use inappropriate combinations of instruments or include tools that are irrelevant to blood pressure measurement, which undermines their effectiveness in this context.