What type of waveform is produced when an electrical current travels toward a positive electrode?

When an electrical current travels toward a positive electrode, it produces a waveform that points upward on the electrocardiogram (EKG). This upward deflection indicates that there is a change in electrical activity in the heart, which is being captured by the electrodes placed on the body.

In the context of an EKG, the positive electrode detects the depolarization of myocardial cells as they become electrically active. This depolarization wave travels through the heart tissue, and when the wave moves toward the positive electrode, it generates an upward deflection. The height and shape of this deflection can provide valuable information about the heart's rhythm and function. An upward waveform suggests that the electrical impulse is effectively moving toward the electrode, which is crucial in interpreting various cardiac conditions.

Understanding this principle is vital for accurate EKG interpretation, as the direction of the waveform can indicate different phases of the cardiac cycle and guide health professionals in diagnosing potential cardiac issues.