Which device is utilized to automatically assess blood pressures without manual inflation?

The correct answer is a blood pressure monitor, specifically referring to an automatic or digital blood pressure monitor. These devices use oscillometric technology to measure blood pressure without the need for manual inflation or auscultation. When the device is placed around the patient's arm and activated, it inflates automatically to a certain pressure, then starts to deflate while measuring the oscillations in the artery caused by the heartbeat. The monitor calculates and displays systolic and diastolic blood pressure readings digitally.

This technology is advantageous in many clinical settings, as it allows for quick and efficient blood pressure assessments, reducing the need for time-consuming manual methods and the potential for user error. In contrast, other devices mentioned, such as a stethoscope and an auscultation device, rely on the clinician's ability to listen to heart sounds or detect Korotkoff sounds during manual measurement, which does not provide automatic readings. A sphygmomanometer, which is commonly used in conjunction with a stethoscope, also requires manual inflation and deflation to ascertain blood pressure, making it a more traditional and labor-intensive method compared to the convenience of a blood pressure monitor.