 
<translate> Ntụgharị uche: Ihe ọmụma dị mkpa iji zaa ajụjụ ahụ dị n'elu bụ: Ebili mmiri P nke ECG na-anọchi anya nkwụsịtụ nke akwara obi, bụ́ nke na-eme ka akwara obi na-ebelata, ma ọ bụ akwara obi systole. <eng> Reasoning: The relevant information to answer the above question is: The P wave in the ECG represents atrial depolarization, which results in atrial contraction, or atrial systole. 