What should be ensured for electrodes to have a proper attachment for an EKG?

For electrodes to attach properly for an EKG, ensuring clean skin and good contact is critical. This is necessary because the electrodes need to make firm contact with the skin to accurately detect the electrical signals of the heart. Any barrier like dirt, oil, or sweat can interfere with the signal transmission, leading to poor EKG readings. Clean skin reduces impedance, ensuring that the electrical signals are transmitted effectively from the heart to the electrodes.

While correct electrode size, room temperature, and skin moisture levels can contribute to overall electrode performance, they do not directly address the immediate need for clean contact. Proper attachment fundamentally hinges on how well the electrode adheres to the skin, so maintaining skin cleanliness is paramount for reliable EKG results.