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NHA Certified EKG Technician (CET) ExamQuestion 6 / 10

Identify the correct sequence of waves and intervals on a standard EKG tracing.

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✓ Correct answer: C. P wave → PR interval → QRS complex → ST segment → T wave Correct answer: P wave → PR interval → QRS complex → ST segment → T wave This sequence represents the standard progression of electrical activity during a normal cardiac cycle. The P wave signifies atrial depolarization, the PR interval includes atrial depolarization and AV nodal delay, the QRS complex represents ventricular depolarization, the ST segment indicates the period before repolarization of the ventricles, and the T wave signifies ventricular repolarization.

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