An electrocardiogram (ECG) presents the story of events occurring in the heart with each beat (electro = electrical, cardio = pertaining to the heart, gram = record or picture). Surface electrodes are placed on the skin at specific anatomic positions that provide a recording of activity below the surface. Interpretation of basic single lead ECG rhythms is often a challenging and intimidating skill for new nurses, but necessary nonetheless. The decision tree above provides an overview of some of