CME Equipment Operation & Maintenance 3 — Questions and Answers
Question 1: What does 'epilator impedance' refer to in the context of electrolysis equipment?
- The resistance of the machine's internal power supply
- The opposition to current flow measured at the probe-tissue interface (Correct answer)
- The frequency response of the RF oscillator circuit
- The thermal resistance of the handpiece insulation
Correct answer: The opposition to current flow measured at the probe-tissue interface
Epilator impedance refers to the total resistance encountered at the probe-tissue junction, which affects current delivery and treatment effectiveness.
Question 2: A probe holder (handpiece) that feels warm during extended treatment sessions should be:
- Considered normal as long as temperature remains below 60°C
- Inspected for internal short circuits and removed from service if overheating persists (Correct answer)
- Cooled with a damp cloth between clients to maintain efficiency
- Operated at lower intensity settings to compensate for heat buildup
Correct answer: Inspected for internal short circuits and removed from service if overheating persists
An overheating handpiece may indicate an internal short circuit or failing components and should be taken out of service and inspected before further use.
Question 3: Which sterilization method is NOT appropriate for stainless steel electrology probes?
- Dry heat oven at 160°C for one hour
- Autoclave steam sterilization
- Immersion in 70% isopropyl alcohol for 10 minutes (Correct answer)
- Chemical vapor sterilization (Chemiclave)
Correct answer: Immersion in 70% isopropyl alcohol for 10 minutes
Alcohol immersion is a disinfection method, not sterilization, and does not achieve the sterility level required for skin-penetrating electrology probes.
Question 4: When calibrating a new epilator, the electrologist should verify:
- That the unit's output matches manufacturer-specified milliamperage at each intensity setting (Correct answer)
- That the probe holder reaches body temperature before insertion
- That the RF frequency exceeds 27 MHz for optimal tissue heating
- That galvanic and thermolysis circuits are operating simultaneously at all times
Correct answer: That the unit's output matches manufacturer-specified milliamperage at each intensity setting
Calibration verification ensures the epilator delivers the milliamperage indicated on its intensity scale, which is critical for consistent and safe treatments.
Question 5: A client reports feeling stinging or burning sensations well outside the treatment area during galvanic electrolysis. This most likely indicates:
- The galvanic current intensity is set appropriately for the hair type
- The indifferent electrode is placed too far from the treatment area
- Poor contact or concentration of current at the indifferent electrode site (Correct answer)
- The probe is inserted at the correct angle and depth
Correct answer: Poor contact or concentration of current at the indifferent electrode site
Burning at the indifferent electrode site indicates poor skin contact, causing current to concentrate rather than distribute evenly, which can cause a chemical burn.
Question 6: The purpose of the footswitch (foot pedal) on an electrolysis unit is to:
- Adjust current intensity during treatment
- Allow hands-free activation of current while the operator positions the probe (Correct answer)
- Control the timer duration for each insertion
- Switch between galvanic and thermolysis modalities
Correct answer: Allow hands-free activation of current while the operator positions the probe
The footswitch lets the electrologist activate current delivery without removing hands from the handpiece, maintaining precise probe positioning.
Question 7: Which of the following probe materials requires extra care to avoid corrosion during autoclave sterilization?
- Solid gold probes
- Stainless steel probes
- Insulated probes with nylon coating (Correct answer)
- Disposable steel Ballet probes
Correct answer: Insulated probes with nylon coating
Insulated probes with nylon or polymer coatings may degrade or delaminate under repeated high-temperature autoclave sterilization, compromising their insulating properties.
