The QT Interval Is the Total Time Taken for Ventricular

question 42

Multiple Choice

The QT interval is the total time taken for ventricular depolarization and repolarization.Prolongation of the QT interval:

• A) decreases the risk of lethal dysrhythmias.
• B) usually occurs when heart rate increases.
• C) increases the risk of lethal dysrhythmias.
• D) can only be measured with irregular rhythms.

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