A nurse is reinforcing teaching with a newly licensed nurse about reading a client's ECG. The nurse should include in the teaching that the P wave represents which of the following cardiac electrical activities?
A. Ventricular depolarization
B. Late ventricular repolarization
C. Atrial depolarization
D. Early ventricular repolarization
Answer (2)
The P wave on an ECG represents atrial depolarization, which is the electrical activation of the atria leading to their contraction. This is important for diagnosing cardiac conditions as abnormalities in the P wave can indicate various heart issues. Understanding these concepts supports effective patient monitoring and care.
;
The P wave on an ECG (Electrocardiogram) represents atrial depolarization. When we refer to depolarization, we mean the process by which cardiac muscle cells undergo a change in electrical charge that results in muscle contraction. In the specific context of the heart:
Atrial Depolarization : The P wave is the first wave in the ECG cycle and signifies the depolarization of the atria, which are the two upper chambers of the heart. After this depolarization, the atria contract, pushing blood into the ventricles.
Purpose of the ECG : An ECG is a test that measures the electrical activity of the heart to show how well it is functioning. By analyzing the different waveforms in the ECG, healthcare providers can understand various aspects of the heart’s behavior.
From the options given, the correct choice is (C) Atrial depolarization . This is a fundamental part of understanding ECG readings and is important for both nurses and doctors in monitoring and assessing heart health.
In summary, the P wave is crucial for identifying the electrical activity related to the atria's contraction. Knowing this helps healthcare providers diagnose and manage conditions related to heart function.
