Pacemakers can be removed, and thousands of these procedures happen every year across Europe and North America. The operation is more complex than the original implant, though, because the leads (thin wires threaded through veins into the heart) can become firmly attached to blood vessels and heart tissue over time. The most common reason for removal is infection, but device upgrades, lead malfunctions, and even the rare discovery that a patient no longer needs pacing can also prompt the procedure.
Why a Pacemaker Might Need to Come Out
Infection is the reason that most clearly demands full removal. When bacteria colonize the pacemaker generator or its leads, antibiotics alone are usually not enough. Guidelines call for complete removal of all foreign material in addition to weeks of antibiotic therapy.1PubMed Central. The Diagnosis and Treatment of Pacemaker-Associated Infection This is especially true when the infection spreads to the heart’s inner lining along the leads, a condition called pacemaker endocarditis. In those cases, the entire system has to go, and antibiotic treatment typically continues for about six weeks afterward.2PubMed. Systemic infection related to endocarditis on pacemaker leads: clinical presentation and management
Beyond infection, leads can fail mechanically. A wire may fracture, lose its insulation, or stop delivering reliable electrical signals to the heart. Sometimes a patient’s condition changes and they need a more advanced device, such as a cardiac resynchronization therapy system or an implantable defibrillator. Upgrading often means the old leads need to come out, particularly when the veins are too crowded to accommodate additional wires or when the existing vein has become blocked. One study of upgrade procedures found that in roughly half of patients, the new device could only be placed after extracting old leads to reopen an occluded vein.3PubMed Central. Efficacy and Safety of Transvenous Lead Extraction at the Time of Upgrade from Pacemakers to Cardioverter-Defibrillators and Cardiac Resynchronization Therapy
There is an ongoing debate in cardiology about whether a lead that is no longer working but not causing problems should be extracted or simply left in place. Abandoning a lead avoids the risks of surgery, but every abandoned wire takes up space in the vein and could complicate future procedures. The decision often comes down to the patient’s age, how many leads are already in the vein, and how likely they are to need more hardware later.4EP Europace. The role of transvenous lead extraction in the management of redundant or malfunctioning pacemaker and defibrillator leads post ELECTRa
How the Leads Are Extracted
Removing the pacemaker generator itself, the metal box under the skin near the collarbone, is the easy part. A surgeon reopens the pocket, disconnects the leads, and lifts the device out. The challenge is the leads. Over months and years, scar tissue forms along the length of each wire, binding it to the vein walls, heart valves, and the inner surface of the heart. Pulling on a chronically implanted lead without first freeing it from that scar tissue risks tearing delicate structures.
The standard approach uses specialized tools inserted over the lead itself. A locking stylet is threaded inside the hollow lead to stiffen it from within, and then telescoping sheaths are slid down over the outside of the lead, mechanically breaking through the scar tissue layer by layer. This technique works, but it is demanding. An alternative uses ultraviolet laser light delivered through a sheath that dissolves the scar tissue rather than tearing it, which can make freeing older leads easier.5Journal of the American College of Cardiology. Pacemaker lead extraction with the laser sheath: results of the pacing lead extraction with the excimer sheath (PLEXES) trial Both mechanical and laser techniques are in wide use today, and the choice often depends on the center’s experience, the age of the lead, and how firmly it appears to be stuck.
These extractions are typically done in a hospital equipped for open-heart surgery, even though open surgery is rarely needed. Having a cardiac surgical team on standby is a safety measure in case something goes wrong during the pull.
How Safe Is the Procedure
The largest prospective registry of lead extractions in Europe, called ELECTRa, tracked over 3,500 patients across multiple centers. Complete removal of all targeted leads succeeded in about 96% of cases. The rate of major complications, including death, was 1.7%, and procedure-related mortality was 0.5%.6European Heart Journal. The European Lead Extraction ConTRolled ELECTRa study: a European Heart Rhythm Association EHRA Registry of Transvenous Lead Extraction Outcomes Those numbers reflect the full spectrum of cases, from simple extractions of young leads to difficult removals of wires that had been in place for decades.
The most feared complication is a tear in a major blood vessel or the heart wall. In a study of over 3,000 extraction procedures at experienced centers, about 0.6% of patients required emergency surgery for a vein tear or a perforation of the heart’s right atrium or ventricle.7Heart Rhythm. Outcomes of patients requiring emergent surgical or endovascular intervention for catastrophic complications during transvenous lead extraction This is why the procedure is done at centers that can convert immediately to open-heart surgery if needed. For device upgrades specifically, the complication profile appears more favorable. One study found zero major complications, no tricuspid valve damage, and no procedure-related deaths in any of the upgrade groups studied.3PubMed Central. Efficacy and Safety of Transvenous Lead Extraction at the Time of Upgrade from Pacemakers to Cardioverter-Defibrillators and Cardiac Resynchronization Therapy
Risk is not evenly distributed. Leads that have been in place longer develop more scar tissue and are harder to free. Patients who have had multiple leads, prior heart surgery, or certain anatomical features face higher procedural difficulty. The experience of the extraction center matters too. High-volume centers tend to report better outcomes, which is one reason professional societies recommend these procedures be done at specialized facilities.
What Happens If You Still Need Pacing
Most people who have a pacemaker removed for infection still need pacing afterward. This creates a tricky gap: the infected system has to come out, but a new one cannot go in until the infection is cleared. The solution is temporary pacing to bridge the interval.
Traditional temporary pacing wires tend to be unstable and keep patients confined to bed. A newer strategy uses an active-fixation lead, the kind normally used in permanent pacemakers, connected to an externalized generator. This approach gives more reliable pacing and lets the patient move around during what can be a multi-week hospital stay. In one study, these temporary setups ran for an average of about 19 days without a single failure of the pacing signal.8EP Europace. Utility and safety of temporary pacing using active fixation leads and externalized re-usable permanent pacemakers after lead extraction Another group reported a similar experience over a mean of about 13 days, with no lead dislocation or significant worsening of pacing quality during the temporary period.9EP Europace. Transcutaneous lead implantation connected to an externalized pacemaker in patients with implantable cardiac defibrillator/pacemaker infection and pacemaker dependency
Once blood cultures come back negative and inflammatory markers normalize, a new permanent device is implanted, usually on the opposite side of the chest from the original to avoid the area where infection occurred.
When to Reimplant a New Device
Getting the timing right for reimplantation after an infection-related extraction is a balancing act. Put the new device in too early and you risk reinfection on fresh hardware. Wait too long and the patient remains hospitalized on a temporary setup, which carries its own risks. Professional guidelines from the Heart Rhythm Society recommend waiting until blood cultures have been negative for at least 72 hours before implanting a new system.10BMJ Open. Timing of device reimplantation and reinfection rates following cardiac implantable electronic device infection: a systematic review and meta-analysis
A meta-analysis examining reimplantation timing found that waiting longer than 72 hours showed a trend toward higher reinfection, though the result was not statistically conclusive. Reimplantation within one week or less did not appear to significantly affect reinfection rates compared to earlier reimplantation. The overall reinfection rate across pooled studies was low, under 1% per person per year.10BMJ Open. Timing of device reimplantation and reinfection rates following cardiac implantable electronic device infection: a systematic review and meta-analysis In practice, most patients end up waiting somewhere between several days and a few weeks, depending on how quickly the infection resolves.
Do Some People Turn Out Not to Need a Pacemaker After All
It is uncommon, but it happens. A pacemaker may have been implanted years earlier for a heart rhythm disturbance that has since resolved or that turns out to have been less severe than initially thought. In a small case series, five patients had their pacemaker therapy permanently discontinued, and none developed recurrent symptomatic slow heart rates over follow-up periods ranging from 18 months to four years.11Annals of Internal Medicine. Termination of implantable pacemaker therapy: experience in five patients
This is not a path that applies to most pacemaker patients. The vast majority have conditions, such as complete heart block or sick sinus syndrome, where the heart’s electrical system genuinely cannot keep up on its own. But the existence of these cases underscores why electrophysiologists sometimes reassess pacing dependency when a device needs to come out. If a patient turns out to be capable of maintaining an adequate heart rate independently, they may not need a replacement at all.
Leadless Pacemakers and Retrieval
Leadless pacemakers are a newer technology: small capsules implanted directly inside the heart, with no wires running through the veins. They were designed in part to eliminate the lead-related problems that make traditional extraction so complex. But the question of whether they can be removed if something goes wrong is relevant, since any implanted device can malfunction or become infected.
A multicenter study of leadless pacemaker retrieval found an overall success rate of 94%. Devices that had been in place for less than six weeks were retrieved successfully 100% of the time. For those implanted six weeks or longer, the success rate was 91%, including devices that had been in the heart for over three years. No procedure-related adverse events occurred within 30 days of retrieval.12PubMed Central / Circulation: Arrhythmia and Electrophysiology. Retrieval of the Leadless Cardiac Pacemaker: A Multicenter Experience These results are encouraging, though the total number of retrievals performed worldwide is still much smaller than for traditional lead extractions, so the long-term picture remains less certain.
If a leadless device cannot be retrieved, the usual approach is to leave it in the heart and implant a new one alongside it. The heart can accommodate several of these capsules, though there are limits, and the long-term consequences of leaving multiple inactive devices in the right ventricle are not fully characterized yet.
Extraction in Children and Patients with Congenital Heart Disease
Lead extraction in younger patients and those with structural heart abnormalities presents its own challenges. Children who receive pacemakers may live with their leads for decades, and congenital heart anatomy can make the path from vein to heart much more complicated. A study of 144 patients in this population found that simple extraction, using only a basic stylet, worked for about 29% of leads. The rest required more advanced techniques or were deliberately abandoned. When complex extraction methods were used, including radiofrequency-powered sheaths, the success rate climbed to 94%.13PubMed Central. Lead extraction in pediatric and congenital heart disease patients
The higher rate of abandoned leads in this group reflects the reality that some wires are simply too risky to extract given the patient’s anatomy. In pediatric patients especially, the veins are smaller and the leads were sometimes placed when the child was an infant, meaning the wire has been through years of growth and tissue remodeling. Decisions about extraction versus abandonment are weighed carefully, because these patients have a long life ahead and may need many more device-related procedures.
The Cost and Resource Burden
Lead extraction is expensive. A study of healthcare costs at a high-volume UK extraction center found that the average reimbursement cost per hospital admission for lead extraction was about £17,400 (roughly $22,000 at prevailing exchange rates), with an average hospital stay of over 16 days.14PubMed. Financial and resource costs of transvenous lead extraction in a high-volume lead extraction centre The total cost across all extraction admissions at that single center exceeded £7.7 million. Hospital stays varied widely, with some patients discharged within days and others remaining for weeks due to complications or the need for prolonged antibiotic therapy before reimplantation.
These costs have driven growing interest in technologies that avoid transvenous leads altogether. Leadless pacemakers and extravascular defibrillator systems do not require wires threaded through the veins, so they eliminate the future need for lead extraction. For patients who are likely to need multiple device replacements over their lifetime, particularly younger patients, these newer devices may offer a meaningful financial and clinical advantage over the long term, even if the upfront cost is higher.
When Removal Means Deactivation, Not Surgery
Sometimes what a patient or family actually means by “removing” a pacemaker is not surgical extraction but deactivation, turning the device off. This comes up most often in end-of-life situations. A pacemaker can be reprogrammed to stop pacing without any surgery at all, using an external programmer held over the device. For patients with implantable defibrillators, deactivation prevents the device from delivering painful shocks during the dying process, which is a common and ethically well-established request.
Pacemaker deactivation is more nuanced. If someone is entirely dependent on pacing, turning off the device could cause the heart to slow dangerously or stop. For patients who are not pacemaker-dependent, deactivation may have little immediate effect, as the heart maintains its own rhythm. The conversation around deactivation involves the patient, their family, and the medical team, and it is treated as a standard part of advance care planning. Medical societies recognize that a competent patient has the right to refuse or discontinue any treatment, including pacemaker therapy, and that honoring this request is not the same as hastening death. It is simply allowing the underlying condition to take its natural course.