Patient Monitoring Systems Flashcards

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

Answer: 0.05-150 Hz

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

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

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

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

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

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

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

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

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

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

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

Answer: Exhaled carbon dioxide concentration, 35-45 mmHg

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

What is the difference between invasive and non-invasive blood pressure monitoring, and when is invasive monitoring preferred?

Answer: Invasive uses an arterial catheter and transducer for continuous beat-to-beat monitoring in hemodynamically unstable patients

Invasive monitoring uses an arterial catheter connected to a pressure transducer for continuous real-time measurement.