NHA Certified Clinical Medical Assistant (CCMA)Clinical Patient CareHard
A medical assistant is preparing to perform an electrocardiogram (ECG) on a patient. The patient has excessive chest hair. Which of the following actions should the medical assistant take to ensure proper electrode adhesion and accurate tracing?
- AUse larger electrodes to cover more surface area.
- BApply extra gel to the electrodes.
- CPlace the electrodes directly over the hair.
- DShave or clip the hair from the electrode sites.
Show answer & explanationAnswer & explanation
Correct answer: D. Shave or clip the hair from the electrode sites.
Excessive chest hair can prevent proper skin contact and adhesion of ECG electrodes, leading to artifact and an inaccurate tracing. Shaving or clipping the hair from the electrode sites ensures good skin contact and improves the quality of the ECG.
Why the other options are wrong
- A. Using larger electrodes does not address the issue of hair preventing contact between the electrode and the skin; the hair will still interfere.
- B. Applying extra gel can actually cause 'bridging' between electrodes, creating artifact, and does not solve the underlying issue of poor contact due to hair.
- C. Placing electrodes directly over hair will result in poor adhesion and significant artifact on the ECG tracing.
ECG Electrode Placement Prep - Hair
Steps taken to prepare the skin for ECG electrode placement, especially in patients with excessive body hair, to ensure optimal adhesion and signal quality.
- Excessive hair causes poor electrode contact.
- Poor contact leads to artifact (baseline wander, muscle tremor).
- Shaving or clipping hair is necessary.
- Explain procedure to patient beforehand.
Memory trick: ECG Hair: Clear the Path, Get the Chart!