What safety features should be checked on NMES units before use?

• A. Battery/line power integrity, current limits, safety cut-offs, impedance monitoring, and fault indicators.
• B. Battery level only.
• C. Temperature sensor and GPS tracking.
• D. Color of the device casing.

Answer: (D)

Before using an NMES unit, prioritize confirming the safety features are functioning. The essential checks focus on power integrity, current control, automatic fault protection, and monitoring that keeps the patient safe. Verifying battery or line power integrity ensures the device operates reliably and won’t lose output during treatment; confirming current limits are in place protects tissues from excessive stimulation; safety cut-offs provide automatic shutdown if a fault or unsafe condition is detected; impedance monitoring helps ensure proper skin–electrode contact and detects high impedance that could cause burns or ineffective therapy; and fault indicators alert you to device faults so you can stop treatment and address issues. These elements together ensure safe, predictable current delivery. The color of the device casing has no relation to safety performance and isn’t a factor in pre-use safety checks.