What is an implication of overdosing on tricyclic antidepressants?

Overdosing on tricyclic antidepressants can lead to serious cardiovascular complications, one of which is cardiac arrhythmia. Tricyclic antidepressants impact various neurotransmitter systems, including norepinephrine and serotonin, but they can also affect sodium channels in cardiac tissue. This disruption can result in various types of arrhythmias, ranging from benign to life-threatening situations.

In a clinical context, patients who have overdosed on these medications may experience symptoms like tachycardia, prolonged QT interval, or even ventricular fibrillation, all of which are forms of cardiac arrhythmias. This makes understanding the potential cardiovascular risks of tricyclics critical when considering their use and monitoring in patients, especially in overdose scenarios.

The other choices, while they may be associated with other conditions or side effects of medications, are not typically linked to tricyclic antidepressant overdoses in the same severe manner as cardiac arrhythmias.