Which unit expresses tourniquet pressure?

Which unit expresses tourniquet pressure?

• A. Millimeters of mercury (mm Hg)
• B. Kilopascals (kPa)
• C. Pounds per square inch (psi)
• D. Centimeters of water (cm H2O)

Answer: (A)

Medical pressure measurements in a tourniquet are expressed in millimeters of mercury because this is the standard unit used for blood pressure and arterial pressures in clinical practice. Using mmHg keeps communication consistent with how systolic and diastolic pressures are read on a cuff, and most clinical devices and gauges are calibrated to display mmHg. This familiarity helps clinicians set an occlusive force that’s safely above the limb’s arterial systolic pressure without introducing confusion from other units. Other units exist, like pounds per square inch, kilopascals, or centimeters of water, but they’re not the conventional way to report tourniquet pressure in most medical settings. They would require conversion and can lead to miscommunication or errors in device settings.

Medical pressure measurements in a tourniquet are expressed in millimeters of mercury because this is the standard unit used for blood pressure and arterial pressures in clinical practice. Using mmHg keeps communication consistent with how systolic and diastolic pressures are read on a cuff, and most clinical devices and gauges are calibrated to display mmHg. This familiarity helps clinicians set an occlusive force that’s safely above the limb’s arterial systolic pressure without introducing confusion from other units.

Other units exist, like pounds per square inch, kilopascals, or centimeters of water, but they’re not the conventional way to report tourniquet pressure in most medical settings. They would require conversion and can lead to miscommunication or errors in device settings.