Project description:BackgroundA new intracardiac leadless pacemaker (ILP) has been developed to ensure atrioventricular (AV) synchrony (AVS) during ventricular pacing (VP). Recent studies have shown the feasibility and safety of accelerometer-based atrial sensing and an improvement in AVS among patients with atrioventricular block implanted with the Micra AV ILP (Medtronic Inc., Minneapolis, MN, USA). However, no data exists about the benefits of a VDD ILP in patients wearing a still working VVI Nanostim ILP (St Jude Medical, St Paul, MN, USA). We describe the feasibility of the procedure and the absence of device-related adverse events in the short-term follow-up.Case summaryWe present the case of a 72-year-old man implanted with a VVI ILP (Nanostim, St Jude Medical, St Paul, MN, USA) on May 2014, who has developed symptomatic high percentage of VVI asynchronous pacing and was treated with an upgrade to synchronous AV pacemaker (PM) ILP-Micra AV (Medtronic Inc., Minneapolis, MN, USA), which has improved symptoms and functional class.DiscussionIntracardiac leadless pacemakers represent the best current option for patients requiring PM implantation who are at high risk of infection and bleeding. Our case shows that the new AVS ILP is a good alternative to VVI ILP in patients with sinus rhythm and a strong need for VP.

| S-EPMC8364773 | biostudies-literature

Late-Onset Infection in a Leadless Pacemaker

Project description:Infection of leadless pacemakers (LPM) is rare, even in patients at high risk for infections. Only 3 cases of LPM infection have been documented in the literature, all occurring within 1 month of device implantation. We report the first case, to our knowledge, of late-onset LPM infection, developing almost 2 years after implantation. (Level of Difficulty: Beginner.) Central Illustration

| S-EPMC9847243 | biostudies-literature

Leadless pacemaker twins in an achondroplastic dwarf.

Project description: Not available

| S-EPMC7361165 | biostudies-literature

Navigating Complex Anatomy During Leadless Pacemaker Implantation.

Project description:Transvenous pacemakers may lead to wound site complications, such as hematomas and infections. Leadless pacemakers have eliminated these risks. However, when the central venous and/or cardiac anatomy are challenging, their implantation technique may require modification(s). Here, we discuss 3 cases of successful leadless pacemaker implantation in patients with a challenging anatomy. (Level of Difficulty: Advanced.).

| S-EPMC10401061 | biostudies-literature

Leadless Pacemaker Pitfalls: Navigating Implantation and Postprocedure Challenges.

Project description:BackgroundLeadless 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 summaryOur case highlights the rare occurrence of LP dislodgement into the pulmonary artery and the delayed development of a traumatic right ventricular apical pseudoaneurysm.DiscussionLPs 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 messagesThis 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.

| S-EPMC11911882 | biostudies-literature

Retrieval of an infectious leadless pacemaker with vegetation.

Project description:This case discusses the retrieval of a pacemaker with vegetation from a 78-year-old man. It suggests that grasping side of Micra body and pulling Micra into Agilis sheath is a possible technique for retrieval.

| S-EPMC9885316 | biostudies-literature

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