CBET Patient Monitoring Systems 2

Question 1

What is the typical frequency range of an ECG amplifier's bandwidth for diagnostic-quality monitoring?

Accepted Answer

0.05-150 Hz

Answer

Diagnostic-quality ECG requires 0.05-150 Hz bandwidth to capture all waveform components accurately.

Question 2

What does NIBP stand for and what method do most patient monitors use to measure it?

Accepted Answer

Non-Invasive Blood Pressure - oscillometric method detecting arterial wall oscillations in an inflated cuff

Answer

NIBP (Non-Invasive Blood Pressure) uses the oscillometric method, detecting pressure oscillations as the cuff deflates.

Question 3

What is the purpose of the central monitoring station in a patient monitoring system?

Accepted Answer

To display and monitor multiple patients' vital signs simultaneously from a central location

Answer

A central station receives and displays real-time vital signs from multiple bedside monitors for simultaneous observation.

Question 4

When troubleshooting a patient monitor displaying 'Lead Off' for ECG, what should a biomedical technician check?

Accepted Answer

The electrode contact quality, lead wire integrity, and cable connections from patient to monitor

Answer

'Lead Off' means a break in the electrical circuit between the patient's skin and the ECG amplifier input.

Question 5

What parameter does capnography monitor and what is the normal end-tidal CO2 (EtCO2) range for a healthy adult?

Accepted Answer

Exhaled carbon dioxide concentration, 35-45 mmHg

Answer

Capnography monitors CO2 concentration in exhaled breath. Normal EtCO2 is 35-45 mmHg.

CBET - Certified Biomedical Equipment Technician Practice Test