Q 1. 1. Remember that a positive deflection indicates electrical activity moving toward the green EKG lead. Examine the two major deflections of a single QRS complex (R wave and S wave) in the EKG tracing in from Part I. According to this data, does ventricular depolarization proceed from right to left or left to right? How does the EKG tracing from Part II (alternate limb placement of electrodes) confirm your answer? 2. Health-care professionals ask the following questions when interpreting an EKG: • Can all components be identified in each beat? • Are the intervals between each component and each complex consistent? • Are there clear abnormalities of any of the wave components? Using these questions as guides, analyze each of the following (a-h) three-beat EKG tracings and record your conclusions in Table 3 below (indicate presence or absence of the P wave, and whether other intervals and/or shapes are normal or abnormal). The first analysis (a) is done for you.