Elapsed time between first p and first s waves in new york

P wave in electrocardiogram is the first wave deflection, and it is related with right and left atrial depolarization. The second wave observed in electrocardiogram is QRS complex .Firstly, the Q wave is observed and then after the negative deflection of R wave the S wave is observed . The time elapsed between P and S wave is 4 minute.

answer; /// i believe that the correct answer is ( monophasic ); ethinyl estradiol- ethynodiol diacetate is a monophasic oral contraceptive agent; ///

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