A client who has overdosed on tricyclic antidepressants would most likely exhibit which of the following findings on an EKG?

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Tricyclic antidepressants can cause significant cardiac toxicity, including a widening of the QRS complex on EKG due to sodium channel blockade. This can lead to life-threatening dysrhythmias such as ventricular tachycardia or fibrillation. Shortened PR intervals or QT intervals, or narrowed QRS segments would not be expected findings in tricyclic antidepressant overdose.

A Client Who Has Overdosed on Tricyclic Antidepressants Would Most