Conclusion
Pacemaker and ICD implantation is a useful therapy for many arrythmias, but proper review of all indications is required. Additionally, consistent follow-up and comments on positioning of the lead is necessary, as inadvertent placement of a pacemaker or ICD into the left ventricle is a rare but under-reported complication that carries a high risk of thromboembolic events and must be diagnosed and treated quickly. There are various methods useful in recognizing such a complication, including ECG, AP and lateral chest X-rays, TEEs, or CT scans.