Which statement about BP measurement methods is true?

• A. Both auscultatory and oscillometric methods are used
• B. Only auscultatory method is valid
• C. BP cannot be measured with oscillometric devices
• D. Only manual methods are acceptable

Answer: (A)

Measuring blood pressure can be done with two main approaches: auscultatory (manual) measurement using a cuff and stethoscope, and oscillometric automated measurement. Both are used in practice and are acceptable when performed correctly. The auscultatory method relies on listening for Korotkoff sounds as the cuff deflates to identify systolic pressure (first sound) and diastolic pressure (sound disappears). It requires proper technique, a correctly sized cuff, the patient seated with the arm supported at heart level, and a quiet environment. Oscillometric devices detect the cuff’s oscillations as it deflates and use algorithms to estimate systolic and diastolic values (and mean arterial pressure). They are convenient and widely used in clinics and at home, but they must be validated for accuracy and used with an appropriate cuff size and positioning. Certain conditions, such as very irregular pulses or arrhythmias, can affect oscillometric readings, which might prompt a manual check to confirm. In short, both methods are valid and commonly employed when applied correctly.