Always start and end your day, before and after meals and when obviously soiled to perform a medical aseptic hand wash. Most facilities today will permit the use of an alcohol based hand rub between patients. You must always use good hand hygiene before and after all patient contact.
When I perform EKGs, I always wear gloves. You can never be too careful. I don’t want to be the source of a nosocomial (hospital acquired) infection! Plus, I want to protect myself and those I care about most.
Another important aspect that should never be overlooked is care of your equipment. You must always wipe the EKG machine and cables down with an approved disinfectant before and after all patient encounters.