CET EKG Technician Roles and Responsibilities 3 — Questions and Answers
Question 1: What is the correct lead placement site for the V1 electrode in a standard 12-lead EKG?
- 4th intercostal space, left sternal border
- 5th intercostal space, midclavicular line
- 4th intercostal space, right sternal border (Correct answer)
- 2nd intercostal space, right sternal border
Correct answer: 4th intercostal space, right sternal border
V1 is placed at the fourth intercostal space along the right sternal border, a standard landmark for accurate precordial lead placement.
Question 2: Which document guides an EKG technician's daily scope of practice and professional conduct?
- The hospital's fire safety plan
- State practice act and the employer's policies and procedures (Correct answer)
- The national formulary for cardiac drugs
- The technician's personal clinical experience
Correct answer: State practice act and the employer's policies and procedures
The state practice act establishes legal scope, while employer policies operationalize those standards in the specific workplace setting.
Question 3: During a 12-lead EKG, a technician observes that lead II shows a flat line while other leads appear normal. The most likely cause is:
- A cardiac arrest in progress
- A detached or faulty RA or LL electrode (Correct answer)
- Ventricular fibrillation artifact
- Pacemaker oversensing
Correct answer: A detached or faulty RA or LL electrode
Lead II is the voltage difference between RA and LL; a flat line in one lead with others intact indicates an electrode connection problem, not a cardiac event.
Question 4: Which of the following tasks is OUTSIDE the scope of practice for a certified EKG technician?
- Applying electrodes to the correct anatomical sites
- Performing a Holter monitor hookup
- Diagnosing atrial fibrillation from the rhythm strip (Correct answer)
- Entering patient demographics into the EKG machine
Correct answer: Diagnosing atrial fibrillation from the rhythm strip
Diagnosing cardiac arrhythmias is a clinical interpretation task reserved for physicians and, in some settings, advanced practice providers.
Question 5: What is the purpose of the standardization mark (calibration pulse) on an EKG tracing?
- To identify the patient's name and ID on the printout
- To confirm that 1 mV of input produces a 10 mm deflection (Correct answer)
- To set the paper speed to 25 mm/sec
- To reset the lead selector to Lead I
Correct answer: To confirm that 1 mV of input produces a 10 mm deflection
The calibration pulse verifies that the machine is correctly calibrated so that 1 millivolt of electrical signal produces exactly 10 mm of waveform deflection.
Question 6: An EKG technician is asked to perform a test on a patient who speaks no English. The best approach is to:
- Proceed without explanation since the procedure is noninvasive
- Use a qualified interpreter or translation service to obtain informed cooperation (Correct answer)
- Ask a family member to translate all clinical instructions
- Use hand gestures only and skip verbal explanation
Correct answer: Use a qualified interpreter or translation service to obtain informed cooperation
Using a qualified interpreter ensures accurate communication, informed cooperation, and compliance with language access laws in healthcare settings.
Question 7: Which action best demonstrates an EKG technician's commitment to patient dignity?
- Leaving the door open to monitor the patient during the procedure
- Exposing only the necessary areas and draping the patient appropriately (Correct answer)
- Discussing the patient's history with coworkers in the hallway
- Removing all clothing before electrode placement for efficiency
Correct answer: Exposing only the necessary areas and draping the patient appropriately
Appropriate draping and minimizing unnecessary exposure demonstrates respect for the patient's privacy and dignity during the procedure.
CET EKG Technician Roles and Responsibilities 3
What is the correct lead placement site for the V1 electrode in a standard 12-lead EKG?