Monitoring Techniques and Equipment Flashcards

Which electrode placement is used for a modified chest lead (MCL1) during continuous cardiac monitoring?

Answer: Positive electrode at V1 position, negative at left shoulder

MCL1 uses the positive electrode at the V1 position (fourth intercostal space, right sternal border) and the negative electrode at the left shoulder.

What does a wandering baseline artifact on a cardiac monitor most commonly indicate?

Answer: Poor electrode contact or patient movement

A wandering baseline is most commonly caused by poor electrode-skin contact, patient movement, or respiratory variation.

The gain (sensitivity) setting on a cardiac monitor is typically set to what default value?

Answer: 10 mm/mV

Standard gain is 10 mm/mV, meaning a 1 mV signal produces a 10 mm deflection on the monitor.

Which type of cardiac monitor continuously records and stores cardiac rhythm data that can be retrieved for analysis?

Answer: Holter monitor

A Holter monitor continuously records cardiac rhythm for 24-48 hours, storing all data for later analysis.

When a 60-cycle interference (AC interference) artifact appears on the monitor, what is the most appropriate first action?

Answer: Check and replace electrodes, ensure proper grounding

AC interference is first addressed by checking electrode contact quality and ensuring proper grounding, as loose electrodes are the most common cause.

What is the primary purpose of the notch filter on a cardiac monitor?

Answer: Remove 60 Hz electrical interference from power lines

The notch filter specifically targets and eliminates 60 Hz interference from AC power lines.

During bedside monitoring, the paper speed is typically set at what standard rate?

Answer: 25 mm/sec

Standard paper speed is 25 mm/sec, which means each small box (1 mm) represents 0.04 seconds.