Telemetry Test Questions And Answers.

When is a pacemaker used {Ans: Post-op cardiac surgery, for tachydysrhythmias, for effects of medications}Sympathetic branch {Ans: Affects both the atria and ventricles. Increases HR, conduction, and irritability}PRI {Ans: 0.12-0.20 seconds Represents both atrial depolarization & delay in AV node}3 drugs that can prolong QT interval {Ans: Lidocaine, Amiodarone, digoxin, haldol}Absolute refractory period {Ans: All the cells can't respond to any stimulus; encompasses the QRS and the first part of the T wave}P wave represents {Ans: Atrial depolarization}