8. 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.
9. The patient has an irregular heart rhythm. To determine an accurate heart rate, the nurse first:
Download all 29 pages for € 11,49Add document to cart