Which device is used for non-invasive monitoring of arterial pressure?

• A. TENS
• B. Tachometer
• C. NIBP
• D. Torque Wrench

Answer: (C)

Non-invasive arterial pressure monitoring is done with a cuff-based blood pressure device. The device used is a non-invasive blood pressure monitor (NIBP). The cuff around the arm inflates to briefly stop blood flow and then deflates while the monitor detects pressure oscillations in the artery to estimate systolic, diastolic, and often mean arterial pressure. This method provides arterial pressure readings without inserting a catheter. Invasive arterial pressure monitoring uses a direct arterial line, which is different. The other devices listed serve unrelated purposes: a TENS unit for pain relief, a tachometer for measuring speed, and a torque wrench for applying a specific torque.