NURSING EXAM QUESTIONS
PATHOLOGY AND GENETICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Atrial contraction
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Atrial Relaxation
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Ventricular contraction
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Ventricular relaxation
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Detailed explanation-1: -The T Wave indicates ventricular repolarization, in which the ventricles relax following depolarization and contraction. The ST segment refers to the gap (flat or slightly upcurved line) between the S wave and the T wave, and represents the time between ventricular depolarization and repolarization.
Detailed explanation-2: -The T wave on an electrocardiogram (ECG) represents typically ventricular repolarization.
Detailed explanation-3: -QT duration reflects the total duration of ventricular depolarization and repolarization. It is measured from the onset of the QRS complex to the end of the T-wave. The QT duration is inversely related to heart rate; i.e the QT interval increases at slower heart rates and decreases at higher heart rates.
Detailed explanation-4: -The P wave in an ECG complex indicates atrial depolarization. The QRS is responsible for ventricular depolarization and the T wave is ventricular repolarization.