5. The P wave corresponds to depolarization of the muscle fibers of the 6. The QRS complex corresponds to depolarization of the muscle fibers of the 7. The T wave corresponds to repolarization of the muscle fibers of the 8. Why is atrial repolarization not observed in the ECG? CRITICAL THINKING ASSESSMENT If a person has a heart murmur caused by the improper opening and closing of a heart valve, the ECG or heart sounds (choose one) will be unusual as the blood is forced through a more narrow opening (stenotic valve), or the blood backflows because the valve does not close properly (incompetent valve). Explain your reasoning for the answer choice. PART D: Assessments
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The T wave corresponds to ventricular repolarization. Atrial repolarization occurs during ventricular depolarization, specifically during the QRS complex. However, it is not typically seen in the ECG because it is masked by the larger QRS complex. Show more…
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