Which assessment is most important for the nurse to measure or perform before administering the first dose of amitriptyline (Elavil)to a patient?

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Amitriptyline is a tricyclic antidepressant that can cause unstable ventricular dysrhythmias.Therefore heart rate and rhythm are most important to assess to establish a baseline and determine possible adverse effects of this drug.Although the drug can also lower blood pressure and increase drowsiness,changes in heart rhythm can be life threatening.

Which Assessment Is Most Important for the Nurse to Measure