Which electrode placement is crucial for minimizing interference during an EKG?

The placement of electrodes is critical in minimizing interference during an EKG, and placing one on the left shoulder is particularly advantageous. The left shoulder's location allows for effective capture of electrical signals generated by the heart, while also positioning the electrode away from regions where muscle movement could produce interference, such as those found in the limbs or areas prone to motion.

This strategic placement helps ensure that the electrical activity of the heart is recorded clearly, reducing extraneous noise from muscle contractions or environmental factors. Proper electrode placement contributes to the accuracy and reliability of the EKG, enhancing the diagnostic capabilities of the test.