Which of the following could affect the accuracy of an ECG reading?

The accuracy of an ECG reading can be influenced by various factors, making it essential to consider each of them. Patient movement is a significant source of artifact in ECG readings. When the patient shifts position or moves during the test, it can create disturbances in the electrical signals picked up by the electrodes, leading to inaccurate or misinterpreted results.

Electrode placement is another crucial factor. Proper placement of the electrodes according to the standard guidelines ensures that the electrical signals from the heart are captured accurately. If the electrodes are not positioned correctly, it can result in misleading information about the heart's activity, affecting the overall diagnostic quality of the ECG.

The condition of the skin also plays a vital role in the accuracy of the ECG results. Factors such as sweat, oils, or abrasions on the skin can create increased resistance at the electrode-skin interface, resulting in poor signal quality. This can lead to a loss of clarity in the recorded electrical signals, potentially masking underlying cardiac issues.

All these factors—patient movement, electrode placement, and skin condition—contribute collectively to the overall reliability of an ECG reading, making the assertion that each influences the accuracy valid and highlighting the importance of proper technique in obtaining a significant ECG.