Multiple Choice
Which of the following arrhythmias can synchronized cardioversion be used to treat?
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18. The Heart
Electrical Conduction System of the Heart
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Which of the following waves represents atrial depolarization in the electrical conduction system of the heart?
A
T wave
B
R wave
C
Q wave
D
P wave
Verified step by step guidance1
Understand the electrical conduction system of the heart, which includes the sinoatrial (SA) node, atrioventricular (AV) node, bundle of His, and Purkinje fibers. This system coordinates the heart's rhythm and is represented by waves on an electrocardiogram (ECG).
Learn about the different waves on an ECG: the P wave, QRS complex, and T wave. Each wave corresponds to specific electrical activities in the heart.
The P wave represents atrial depolarization, which is the electrical activity that initiates the contraction of the atria. This is the first wave seen on an ECG.
The QRS complex follows the P wave and represents ventricular depolarization, which is the electrical activity that initiates the contraction of the ventricles.
The T wave follows the QRS complex and represents ventricular repolarization, which is the recovery phase of the ventricles after contraction.
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