CMT Monitoring Techniques and Equipment 3

Question 1

Which monitoring lead is considered best for detecting ST-segment changes during ischemia monitoring?

Accepted Answer

Lead V5 (or MCL5)

Answer

Lead V5 (or MCL5) is most sensitive for detecting lateral wall ischemia and ST-segment changes, making it preferred for ischemia monitoring.

Question 2

What is the correct skin preparation technique before applying monitoring electrodes to maximize signal quality?

Accepted Answer

Clean skin with alcohol, allow to dry, and lightly abrade if needed

Answer

Skin should be cleaned with alcohol, allowed to dry completely, and lightly abraded to remove dead skin cells and reduce impedance.

Question 3

A telemetry transmitter battery is low. What is the most likely effect on monitoring quality?

Accepted Answer

Signal dropout, artifact, or loss of transmission

Answer

Low battery in a telemetry transmitter causes signal weakness, resulting in signal dropout, artifact, or complete loss of transmission to the monitoring station.

Question 4

Which factor most directly affects the radiofrequency signal range of a telemetry system?

Accepted Answer

Building construction materials and competing wireless signals

Answer

Building materials (concrete, steel) and competing wireless devices (Wi-Fi, other telemetry) are primary factors limiting telemetry transmission range.

Question 5

What is the function of the RA electrode in a standard 3-lead monitoring setup?

Accepted Answer

It serves as the negative electrode and reference for Lead II

Answer

In Lead II, the RA electrode serves as the negative pole, while the LL electrode is positive, with the LA electrode serving as ground.

(CMT) Certified Cardiac Monitor Technician Practice Test

(CMT) Certified Cardiac Monitor Technician Practice Test

CMT Monitoring Techniques and Equipment 3