Which statement best reflects safety considerations when using electrotherapy?

• A. Electrodes must always be placed near the heart
• B. It is safe to use devices with damaged insulation
• C. Placing electrodes on moist skin is recommended
• D. Electrode placements should avoid the carotid sinus and implanted devices unless approved

Answer: (D)

Safety with electrotherapy centers on avoiding actions that could trigger dangerous bodily responses or affect implanted devices, while protecting the skin from injury. Placing electrodes away from the carotid sinus and away from implanted devices unless there is explicit approval best addresses these risks. Stimulation near the carotid sinus can provoke a strong vagal response, causing slowed heart rate or low blood pressure, which can be dangerous. Implanted devices like pacemakers or defibrillators can be affected by electrical fields, leading to interference or malfunction if electrodes are placed too close or used without guidance from the device manufacturer or a clinician. Damaged insulation creates a real risk of electric shock or burns, so devices with damaged insulation are not considered safe to use. Moist skin changes conductance unpredictably and can increase the risk of skin irritation or burns, so placing electrodes on moist skin is not a recommended safety practice. In short, avoid areas near the carotid sinus and implanted devices unless approved, and never use equipment with compromised insulation or unsafe skin preparation.