Which measure is commonly expressed in millimeters of mercury (mmHg) and often obtained using a cuff?

Which measure is commonly expressed in millimeters of mercury (mmHg) and often obtained using a cuff?

• A. Oxygen saturation
• B. Temperature
• C. Pulse Rate
• D. Blood pressure

Answer: (D)

Blood pressure is the measure expressed in millimeters of mercury because it quantifies the pressure inside the arteries. It’s typically obtained with a cuff placed around the upper arm, which temporarily occludes the artery as the cuff is inflated and then gradually released. As the cuff deflates, the clinician or the device detects the pressures in the artery, giving a reading in mmHg that is written as systolic over diastolic (for example, 120/80 mmHg). This method is standard because it directly reflects arterial pressure in a noninvasive way and provides two key values that indicate cardiovascular status. Oxygen saturation is measured as a percentage with a pulse oximeter, not in mmHg. Temperature is measured in Celsius or Fahrenheit. Pulse rate is the number of heartbeats per minute, measured in beats per minute, not in mmHg.

Blood pressure is the measure expressed in millimeters of mercury because it quantifies the pressure inside the arteries. It’s typically obtained with a cuff placed around the upper arm, which temporarily occludes the artery as the cuff is inflated and then gradually released. As the cuff deflates, the clinician or the device detects the pressures in the artery, giving a reading in mmHg that is written as systolic over diastolic (for example, 120/80 mmHg). This method is standard because it directly reflects arterial pressure in a noninvasive way and provides two key values that indicate cardiovascular status.

Oxygen saturation is measured as a percentage with a pulse oximeter, not in mmHg. Temperature is measured in Celsius or Fahrenheit. Pulse rate is the number of heartbeats per minute, measured in beats per minute, not in mmHg.