Key result
A dislodged leadless pacemaker in the pulmonary artery was successfully retrieved by snaring its distal end, though the patient developed a delayed right ventricular apical pseudoaneurysm 4 months later.
Why the study?
Leadless pacemakers carry risks of dislodgement and embolization into the pulmonary artery, presenting complexities in device implantation and retrieval.
Case Report (n=1)
This case highlights the rare complications of leadless pacemaker dislodgement into the pulmonary artery and delayed right ventricular pseudoaneurysm, emphasizing the need for meticulous retrieval techniques snaring the distal tines.
BACKGROUND: Leadless pacemakers (LPs) are implanted into the right ventricular septum, eliminating intravascular complications associated with traditional pacemakers. They attach to the myocardium using 4 curved, self-expanding nitinol tines. CASE SUMMARY: Our case highlights the rare occurrence of LP dislodgement into the pulmonary artery and the delayed development of a traumatic right ventricular apical pseudoaneurysm. DISCUSSION: LPs were designed to reduce the lead- and pocket-related complications that can be seen with conventional pacemakers. However, LPs carry a risk of dislodgement and embolization into the pulmonary artery compared with conventional pacemakers. TAKE-HOME MESSAGES: This case explores the complexities and risks involved in both the implantation and retrieval of LPs in high-risk patient populations and highlights the importance of meticulous technique in retrieving an acutely embolized LP from the right PA.
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Goldar et al. (2025) conducted a case report in Sinus node dysfunction with leadless pacemaker dislodgement (n=1). Leadless pacemaker (Micra) retrieval was evaluated. A dislodged leadless pacemaker in the pulmonary artery was successfully retrieved by snaring its distal end, though the patient developed a delayed right ventricular apical pseudoaneurysm 4 months later.
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