Comparing Heart Rhythm Disorder Treatments: Medication, Ablation or a Device?

The folder from the cardiology visit is still sitting on the kitchen table, unopened, three days later. Inside are a printout of a heart tracing, a leaflet about a procedure with a name that sounds like plumbing, and a prescription that has not yet been filled. The question that keeps circling at 3 a.m., when the heart does its familiar stumble and rush, is a simple one: pills, a procedure or something implanted, and how does anyone choose?

That is the moment most people meet the types of arrhythmia treatment for the first time, and the order in which they are usually explained (medication, then ablation, then a device) can make it sound like a ladder to climb. It is not. The three are different tools for different electrical faults, and for some rhythms the right answer is none of them yet.

What follows is the honest version of that conversation: how each option actually works, who tends to be offered what, where the trade-offs sit, and the questions worth bringing to the next appointment.

What are the main types of arrhythmia treatment?

An arrhythmia is a heartbeat that runs too fast, too slow or out of step because the heart’s electrical wiring is misfiring somewhere along its route. The route matters: a fault in the upper chambers behaves very differently from one in the pumping lower chambers, and that is the first thing that shapes treatment.

Broadly, the options fall into three families. The first is medicine. Some drugs slow the electrical relay between upper and lower chambers so the pulse stays manageable, some change how heart cells fire so the rhythm itself is more likely to hold, and a third group, anticoagulants, does nothing to the rhythm at all but thins the blood to lower the stroke risk that certain arrhythmias carry.

The second family is procedural. Catheter ablation uses thin tubes threaded through a vein to deliver heat or cold to the tissue generating or conducting the bad signal. Cardioversion, a timed electrical shock given under brief anesthesia, resets an irregular rhythm without changing the tissue.

The third family is hardware. A pacemaker prevents the heart from running too slowly; an implantable cardioverter-defibrillator, or ICD, watches for dangerously fast rhythms from the lower chambers and corrects them.

A fourth category rarely gets top billing but often matters most: treating the things that provoke arrhythmias. The Mayo Clinic lists untreated sleep apnea, thyroid disease, high blood pressure, alcohol and some stimulants among common triggers, and addressing them can reduce how often episodes occur.

Then there is the option of doing nothing beyond monitoring. Many extra beats and brief runs of fast rhythm in a structurally normal heart are harmless, and guideline bodies are comfortable recommending observation when symptoms are mild and the tracing is reassuring. The question is never simply which treatment, but whether treatment is needed at all.

How does catheter ablation work, step by step?

Picture a room wired with a faulty light switch that flickers every time someone walks past. Ablation does not rewire the whole house; it finds that one switch and disables it.

The specialist who does this is an electrophysiologist, a cardiologist trained specifically in the heart’s electrical system. The procedure starts with a small puncture, usually in a vein at the top of the leg. Through it, flexible tubes called catheters are guided up to the heart under X-ray and ultrasound imaging. Sensors on the catheter tips record electrical activity from inside the chambers, building a color map that shows where signals originate and how they spread. In some cases the team deliberately provokes the arrhythmia with pacing or medication so they can watch it in action.

Once the culprit area is located, energy is applied. Radiofrequency ablation uses heat from radio waves; cryoablation freezes the tissue instead. Either way, the goal is a tiny line or patch of scar that no longer conducts electricity. For atrial fibrillation, the target is typically the ring of tissue where the pulmonary veins, which return blood from the lungs, enter the left upper chamber, because that is where most stray signals begin. For a condition such as supraventricular tachycardia, a fast rhythm from an extra electrical pathway, the target is that pathway itself.

According to the NHS, the procedure usually takes around two to three hours and may be done under sedation or general anesthesia, and many people go home the same day or after one night. Nothing is removed and nothing mechanical is left behind. The heart simply has one fewer route for a bad signal to travel, though for some rhythms, particularly long-standing atrial fibrillation, the NHS notes that the procedure may need to be repeated.

Arrhythmia medication vs ablation: what the drugs actually do

Medicines for heart rhythm disorders do three quite separate jobs, and it helps to know which job a prescription is doing before comparing it with a procedure.

Rate control is the first job. Beta blockers, certain calcium channel blockers and, less often now, digoxin slow the signal as it passes through the atrioventricular node, the electrical gateway between upper and lower chambers. They do not stop the upper chambers misfiring; they stop the lower chambers racing in response. Their effect typically shows within hours to days, and dose adjustments are made by the prescriber based on pulse and symptoms.

Rhythm control is the second. Antiarrhythmic drugs such as flecainide, sotalol or amiodarone alter the flow of ions across heart cell membranes, making the cells less likely to fire out of turn. Judging whether one is working usually takes weeks, often with follow-up ECGs, and the same properties that steady a rhythm can occasionally provoke a new one, which is why monitoring is built in. Amiodarone in particular can affect the thyroid, lungs and liver over time, so regular blood tests and check-ups are standard.

Stroke prevention is the third job, and it is the one most often confused with the others. Anticoagulants do not touch the rhythm. They lower the chance that blood pooling in a fibrillating upper chamber forms a clot that travels to the brain.

Ablation competes only with the second job. It aims to reduce or remove the need for rhythm-controlling drugs by fixing the source rather than damping the symptom. It does not automatically replace rate control or, crucially, anticoagulation; those decisions rest on separate risk assessments made by the prescribing clinician, and stopping any of them without that conversation is unsafe.

Pacemaker vs ICD: what each device does and does not do

The two devices are often mentioned in the same breath, but they solve opposite problems. A pacemaker exists for a heart that is too slow. An ICD exists for a heart that may suddenly go dangerously fast.

A pacemaker is a small sealed unit, roughly the size of a matchbox, placed under the skin below the collarbone with one or more thin leads threaded through a vein into the heart. It listens constantly. When the natural rhythm drops below a set rate or a beat fails to arrive, it delivers a tiny electrical pulse that the person cannot feel. Newer leadless versions sit entirely inside the heart chamber. The NHS describes the implant as usually taking about an hour under local anesthetic with sedation, with most people home the same day or the next, and the Mayo Clinic notes that the battery typically lasts five to fifteen years before the unit is replaced.

An ICD looks similar and is implanted the same way, but its job is surveillance for ventricular tachycardia or fibrillation, chaotic fast rhythms from the lower chambers that can stop effective pumping. If it detects one, it first tries rapid pacing to interrupt the rhythm; if that fails, it delivers a shock. Most ICDs also pace for slow rhythms, so they include pacemaker function, but a pacemaker cannot shock.

A third device, cardiac resynchronization therapy, paces both lower chambers so they contract together. It is used in some people with heart failure whose chambers have fallen out of step.

What neither device does is stop atrial fibrillation from happening. A pacemaker does not treat a fast irregular upper chamber, except in a specific strategy where the electrical gateway is deliberately ablated and the pacemaker takes over the pulse entirely. Anyone told they need a device should ask which of these three jobs it is meant to do.

Who is usually offered each treatment, and who is asked to wait?

Cardiology guidelines from the American Heart Association, the European Society of Cardiology and NICE in the UK follow a shared logic: match the intervention to the rhythm, the symptom burden and the safety risk, and do not intervene on a heart that is not asking for it.

Monitoring alone is common for isolated extra beats, occasional short runs of fast rhythm and slow heart rates that cause no symptoms, especially in a heart that looks structurally normal on an echocardiogram, the ultrasound scan of the heart’s chambers and valves.

Medicines are typically the first step when symptoms are frequent enough to matter or when a fast rate needs bringing down promptly. For atrial fibrillation, anticoagulation is considered for anyone whose stroke risk score crosses a guideline threshold, regardless of how they feel.

Ablation is generally offered when a rhythm keeps returning despite medication, when medication is poorly tolerated, or increasingly as a first choice for certain rhythms. Supraventricular tachycardia from an extra pathway is one example where guidelines support early ablation because the target is discrete and well defined. For symptomatic atrial fibrillation of recent onset, recent guidelines have moved toward offering ablation earlier rather than after years of drugs.

Devices follow documentation: a pacemaker after a recorded slow rhythm or pauses that explain symptoms such as fainting; an ICD after a survived cardiac arrest or dangerous ventricular rhythm, or when pumping function measured on echo is low enough to place someone at high risk.

People are often asked to wait when a reversible trigger is present. Atrial fibrillation appearing after heart surgery, during a thyroid flare, an infection or a heavy drinking episode may settle once the trigger is treated. Pregnancy, uncontrolled blood pressure, untreated sleep apnea and very long-standing fibrillation with a greatly enlarged upper chamber are other situations where teams often address the background first or weigh procedures more cautiously.

Atrial fibrillation treatment options: rate, rhythm and stroke prevention

Atrial fibrillation deserves its own section because it is the arrhythmia most people asking this question actually have. In it, the upper chambers quiver chaotically instead of contracting cleanly, the pulse becomes irregular and often fast, and blood can pool and clot. The American Heart Association reports that atrial fibrillation is associated with roughly a five-fold increase in stroke risk, which is why the first treatment decision is often not about the rhythm at all.

Stroke prevention comes first. Clinicians use a structured score that tallies age, sex, blood pressure, diabetes, heart failure and vascular disease to estimate risk, then weigh it against bleeding risk before recommending an anticoagulant. For people who cannot take blood thinners, a procedure that seals off the small pouch in the left upper chamber where most clots form is an alternative some centers offer; it is a device-based option that sits outside the pacemaker and ICD categories.

Rate control comes second, and for many people it is enough. If the pulse is kept in a comfortable range and symptoms are mild, guidelines accept living with the irregular rhythm.

Rhythm control is the third pillar, pursued when symptoms persist or when restoring normal rhythm is felt to matter for the heart’s long-term function. The tools are cardioversion, which the NHS describes as a controlled electric shock given under short-acting anesthetic to reset the rhythm; antiarrhythmic drugs to help it hold; and catheter ablation to remove the source.

Running underneath all three is the least glamorous pillar. Weight, alcohol, blood pressure, sleep apnea and physical fitness each influence how often fibrillation returns, and the Mayo Clinic lists addressing them among standard recommendations. A procedure performed on a heart whose triggers are untouched is working against the current.

Comparing the types of arrhythmia treatment side by side

No single table captures every rhythm, but the one below sets out how the three families differ on the questions people ask most. Timelines are typical ranges drawn from the cited sources, not promises for any individual.

Question	Medication	Catheter ablation	Implanted device
What it targets	Rate, rhythm or clot risk, depending on the drug	The tissue generating or conducting faulty signals	Heart rate that is too slow (pacemaker) or dangerously fast (ICD)
Invasiveness	None	Vein puncture, catheters inside the heart	Small incision below collarbone, leads in the heart
Typical procedure time	Not applicable	About 2 to 3 hours (NHS)	About 1 hour for a pacemaker (NHS)
Usual hospital stay	Not applicable	Same day or one night (NHS, Cleveland Clinic)	Same day or next day (NHS)
How long until you know it is helping	Hours to days for rate control; weeks for rhythm drugs	Several weeks to a few months as the heart heals (Cleveland Clinic)	Immediate for slow rhythms
Ongoing commitment	Daily tablets, periodic blood tests or ECGs	Follow-up visits; possible repeat procedure	Device checks; battery replacement after 5 to 15 years (Mayo Clinic)
Reversible?	Yes, by stopping under supervision	No; scar is permanent	Device can be removed, though leads may be difficult

Two things the table cannot show. First, the columns are not rivals in every case; many people use two at once, and anticoagulation in particular runs alongside whichever rhythm strategy is chosen. Second, the right column for one rhythm can be wrong for another. Ablation is a mainstream first-line choice for some fast rhythms from an extra pathway and a more measured choice for long-standing fibrillation in an enlarged heart. The table describes the tools; the diagnosis decides which one is picked up.

What are the risks of each approach?

Every effective treatment carries risk, and honest comparison means naming them in the same tone rather than leading with the drawbacks of the option a team happens not to favor.

Medicines have the gentlest entry and the longest tail. Rate-control drugs can cause tiredness, dizziness from low blood pressure or a pulse that dips too far. Antiarrhythmic drugs carry the paradox mentioned earlier: the Mayo Clinic and MedlinePlus both note they can occasionally trigger new rhythm problems, which is why some are started under monitoring. Amiodarone’s effects on thyroid, lungs, liver, eyes and skin accumulate with years of use and require scheduled testing. Anticoagulants raise bleeding risk, from nuisance bruising to, rarely, serious internal bleeding.

Catheter ablation concentrates its risk into a single day. Bruising or bleeding at the groin puncture is the most common issue. Less often, fluid can collect around the heart, a vessel or valve can be injured, or the nerve that drives the diaphragm can be irritated during procedures near the right upper chamber. Rare but serious complications include stroke and, in left-sided atrial fibrillation ablation, injury to the esophagus, which lies just behind the heart. The Cleveland Clinic and NHS both describe overall serious complication rates as low while stressing that the risk profile depends on the rhythm being treated and the person’s other conditions.

Devices carry risks at implant and over the years. At implant: infection, bleeding, a collapsed lung if the needle nicks it, or a lead that shifts and must be repositioned. Later: lead fracture, infection tracking along a lead, and, for ICDs, the possibility of a shock delivered for a rhythm that did not truly need one, which is distressing even when medically harmless.

A team should be able to tell you which of these applies to your rhythm and your anatomy, and how they would recognize and manage each one.

What do the days and weeks after treatment usually look like?

Recovery timelines are where expectations most often drift from reality, so it helps to know what the sources actually describe.

After catheter ablation, the puncture site at the top of the leg is usually the first thing people notice. Bruising, tenderness and a small firm lump are common and settle over one to two weeks. Mild chest discomfort with deep breaths or lying flat can occur for a few days as the heart’s outer lining recovers from the procedure. The Cleveland Clinic advises avoiding heavy lifting and strenuous exercise for about a week and notes that most people return to ordinary routines within days, though the exact pause depends on the individual and the team’s instructions.

The less intuitive part is the rhythm itself. Ablated tissue is inflamed before it scars, and palpitations or brief returns of the arrhythmia in the first weeks are common and do not necessarily mean the procedure has failed. Electrophysiologists typically judge the result over a healing window of several weeks to a few months, which is why anticoagulation and rhythm drugs are often continued through that period and reviewed afterward rather than stopped on discharge.

After a pacemaker or ICD, the wound below the collarbone is closed with stitches or glue and kept dry until checked. The NHS advises avoiding strenuous activity and vigorous arm movements on the device side for roughly four to six weeks so the leads settle in place. Most people feel the benefit of a pacemaker for a slow rhythm immediately. A first device check is usually scheduled within weeks, and many devices now transmit data remotely.

After starting rhythm medication, expect follow-up ECGs and, for some drugs, blood tests in the early weeks. Driving rules after procedures and devices vary by country and by rhythm, so ask your team rather than assuming.

Can you combine treatments, or switch between them?

Yes, and most real-world care plans do. The three families are better thought of as a toolkit than a menu where only one dish is ordered.

The most common pairing is a rhythm strategy plus anticoagulation. Someone who has an ablation for atrial fibrillation frequently continues a blood thinner, at least through the healing window and often long term, because stroke risk is scored on age and other conditions rather than on whether the rhythm currently feels regular. The NHS is explicit that ablation does not by itself remove the need for anticoagulation in people whose risk score warrants it.

Drugs and ablation also overlap in sequence. A person may start an antiarrhythmic, find the side effects intolerable, and move to ablation. Another may have an ablation that reduces episodes from weekly to a few a year and stay on a low-intensity drug the team is comfortable with. Guidelines treat this as a reasonable outcome rather than a failure.

Devices pair with drugs too. Someone with an ICD may take a beta blocker or antiarrhythmic specifically to reduce how often the device needs to act. And in the pace-and-ablate strategy described earlier, a pacemaker and an ablation are performed as one plan: the electrical gateway is ablated so fibrillation in the upper chambers can no longer drive the pulse, and the pacemaker sets the rate.

Switching is the part that needs discipline. Rhythm medicines are not interchangeable and some interact with each other or with anticoagulants; the prescribing clinician sequences any change and often schedules an ECG around it. Stopping a rate-control drug abruptly can cause a rebound in heart rate, and stopping an anticoagulant because a procedure went well is one of the more dangerous decisions a person can make alone. The tools combine well; the combining is the team’s job.

What people often get wrong about arrhythmia treatment

Several beliefs come up so often in clinic that they deserve direct correction.

The first is that ablation ends the need for blood thinners. It may reduce how often the heart fibrillates, but stroke prevention decisions rest on a risk score built from age, blood pressure, diabetes and other factors, and guidelines generally advise continuing anticoagulation in people above threshold regardless of rhythm outcome. Some people do stop after discussion; that is a clinical judgment, not an automatic consequence.

The second is that a pacemaker treats atrial fibrillation. It treats a slow heart. Unless the team has planned a specific pace-and-ablate strategy, a pacemaker will not stop the upper chambers quivering, and someone offered one for pauses or a slow pulse should not expect their fibrillation symptoms to change.

The third is that medication is the weak option and a procedure is the serious one. For many rhythms, medicines are the guideline-recommended first step and remain the long-term plan. Choosing them is not settling.

The fourth is that feeling fine means the treatment can pause. Anticoagulants protect against an event that gives no warning; rate-control drugs can rebound when stopped suddenly. The absence of symptoms is not the absence of risk.

The fifth is that any palpitation is dangerous. Awareness of one’s own heartbeat is extremely common, and most extra beats in a normal heart are benign. The reverse is also true: some serious rhythms cause no sensation at all, which is why treatment is guided by tracings rather than by how the heart feels.

The sixth is that supplements marketed for heart rhythm can substitute for treatment. The NIH Office of Dietary Supplements notes limited or inconsistent evidence for most such products, and some, including certain herbal preparations, interact with anticoagulants or rhythm drugs. Anything taken alongside prescribed medicine should be on the team’s list.

How do heart teams decide between medication, ablation and a device?

The decision is rarely made by one doctor in one visit. It emerges from a set of facts about the heart, a set of facts about the person, and a conversation that weighs them.

The heart facts come first. A twelve-lead ECG and often a wearable monitor worn for days or weeks establish exactly which rhythm is present, how fast it runs, how long episodes last and how often they occur. An echocardiogram measures chamber size, valve function and pumping strength. An enlarged left upper chamber, a leaking valve or weakened pumping each shift the balance between options. Blood tests rule out thyroid disease, anemia and electrolyte imbalance that can mimic or drive arrhythmias.

The person facts follow. Age, kidney function, bleeding history, other medicines, lung disease, sleep apnea, alcohol use, pregnancy or plans for it, and the physical demands of work and daily life all appear in guideline algorithms from the American Heart Association, the European Society of Cardiology and NICE. So does symptom burden, which guidelines now score formally because two people with identical tracings can experience them completely differently.

Then comes the conversation, which the guidelines call shared decision-making. A team should be able to say, for your rhythm and your heart, what each option is likely to achieve, what it will demand, what could go wrong and what happens if you wait. You should be able to say what matters most to you: avoiding daily tablets, avoiding a procedure, protecting the ability to exercise, minimizing time off work, or simply sleeping through the night without the 3 a.m. stumble.

Guideline documents give the framework and set boundaries on what is reasonable. They do not give the answer, because the answer depends on values as well as evidence. The team holds the final recommendation; the person holds the right to understand it.

Questions to ask your care team

Appointments are short and the questions that matter most tend to surface in the car afterward. Taking a written list changes that. The following are the ones electrophysiologists say they wish more people asked.

• Exactly which rhythm do I have, and which chamber does it come from? Ask to see the tracing.
• Is treating this about symptoms, about stroke prevention, about protecting the heart’s pumping function, or some combination?
• If we did nothing but monitor for now, what would you expect to happen over the next year?
• For each option you are suggesting, what are you hoping it will achieve for me specifically, and what would count as it not working?
• Which of my other conditions or medicines change the balance between these options?
• If I have an ablation, will I still need a blood thinner afterward, and who will make that decision and when?
• If I have a device, which job is it doing: slow rhythms, fast rhythms, or resynchronizing the chambers?
• What are the most common complications for someone with my rhythm and anatomy, and how would we recognize them?
• How long is the realistic recovery, what should I avoid, and when can I drive, exercise and return to work?
• What follow-up tests will I need, and how often?
• Are there triggers in my life, such as sleep, alcohol, weight or blood pressure, that would make any treatment work better?
• Is a second procedure or a later change of plan common with this rhythm?

Two habits make these questions more useful. Bring someone to listen, because it is hard to absorb answers while also forming the next question. And ask for the answers in terms of your own heart, not population averages; a team that knows your echocardiogram and tracings can usually be more specific than a leaflet, and a good one will tell you where the evidence stops and judgment begins.

When to call your doctor

Most of the sensations that follow arrhythmia treatment, from groin bruising to a few days of fluttering after ablation, are expected and were covered at discharge. A smaller set are not, and they need a same-day call or emergency care rather than a wait for the next appointment.

Call emergency services immediately for chest pain or pressure that does not settle within minutes, sudden severe shortness of breath, fainting or near-fainting, or any sign of stroke: face drooping, arm weakness, slurred or confused speech, sudden loss of vision or sudden severe headache. The CDC and American Heart Association both stress that stroke treatment is time-critical and that anyone with atrial fibrillation, on a blood thinner or not, should treat these as emergencies. If an ICD delivers a shock and you feel unwell afterward, or delivers more than one shock in a short period, that is also an emergency; a single shock after which you feel well should be reported to the device team the same day.

Call your care team promptly, the same day, for a heartbeat that is racing or pounding and will not settle over an hour or so, a pulse that feels unusually slow along with dizziness, or new swelling in the legs or breathlessness lying flat. After ablation, seek help for a groin lump that is growing, hot or pulsating, for bleeding that does not stop with firm pressure, or for pain on swallowing or fever in the weeks afterward. After a device implant, report redness, warmth, discharge or opening at the wound, fever, or a sensation of the device or lead having shifted.

On any anticoagulant, report black or bloody stools, blood in urine, coughing or vomiting blood, a nosebleed that will not stop, or any significant head injury even without symptoms.

If you are unsure whether something counts, call. Teams would rather answer an unnecessary question than miss a necessary one.

Frequently asked questions

What are the main types of arrhythmia treatment?

The three main families are medication, catheter ablation and implanted devices. Medicines slow the heart rate, steady the rhythm or thin the blood to prevent stroke. Ablation scars the small area of tissue sending faulty signals. Pacemakers prevent a heart from running too slowly and implantable defibrillators correct dangerously fast rhythms. Many people also need triggers such as sleep apnea or high blood pressure treated, and some need only monitoring.

Arrhythmia medication vs ablation: which is usually tried first?

It depends on the rhythm. Medication is often the first step for atrial fibrillation and for fast rates that need prompt control, while guidelines support early ablation for some rhythms such as supraventricular tachycardia from an extra pathway. Recent guidelines also allow ablation earlier for symptomatic atrial fibrillation rather than only after drugs fail. The treating cardiologist weighs symptoms, heart structure and other conditions before recommending either.

How does catheter ablation work?

Thin tubes called catheters are threaded through a vein, usually at the top of the leg, into the heart. Sensors map where abnormal electrical signals start, then heat from radio waves or freezing from cryoablation creates a tiny scar so that tissue can no longer conduct. The NHS describes the procedure as taking about two to three hours under sedation or general anesthesia, with most people home the same day or after one night.

Pacemaker vs ICD: what is the difference?

A pacemaker sends small pulses when the heart beats too slowly or skips beats. An implantable cardioverter-defibrillator, or ICD, monitors for dangerously fast rhythms from the lower chambers and interrupts them with rapid pacing or a shock. Most ICDs can also pace for slow rhythms, but a pacemaker cannot deliver a shock. Both are implanted below the collarbone, and the Mayo Clinic notes pacemaker batteries typically last five to fifteen years.

What are the atrial fibrillation treatment options?

Care for atrial fibrillation rests on three pillars: stroke prevention with anticoagulants or, for some, a procedure to seal the left atrial pouch; rate control with drugs that slow the pulse; and rhythm control through cardioversion, antiarrhythmic drugs or catheter ablation. Treating triggers such as alcohol, sleep apnea, weight and blood pressure supports all three. The American Heart Association links atrial fibrillation to a roughly five-fold stroke risk, which is why prevention comes first.

Do you still need blood thinners after ablation?

Often, yes. Anticoagulation decisions are based on a stroke risk score built from age, blood pressure, diabetes and other conditions, not on whether the rhythm is currently regular. Guidelines generally advise continuing anticoagulation through the healing window after ablation and long term in people above the risk threshold. Some people do stop after review, but that is a decision made with the prescribing clinician rather than an automatic result of the procedure.

How long does recovery take after catheter ablation?

Bruising and tenderness at the groin puncture usually settle within one to two weeks, and the Cleveland Clinic advises avoiding heavy lifting and strenuous exercise for about a week. The heart itself heals over several weeks to a few months, and palpitations during that window are common and do not necessarily mean the procedure has failed. Teams usually judge the final result after this healing period, not at discharge.

Is a pacemaker used to treat atrial fibrillation?

Not directly. A pacemaker treats a heart that beats too slowly; it does not stop the upper chambers fibrillating. The exception is a planned pace-and-ablate strategy, in which the electrical gateway between the chambers is ablated so fibrillation can no longer drive the pulse and the pacemaker sets the rate instead. Anyone offered a pacemaker should ask which specific job it is intended to do.

Can arrhythmia medicines cause new rhythm problems?

They can, occasionally. Antiarrhythmic drugs work by changing how heart cells conduct electricity, and the Mayo Clinic and MedlinePlus note the same properties can sometimes provoke a new arrhythmia, a phenomenon called proarrhythmia. That is why some drugs are started under monitoring and followed with ECGs. Rate-control drugs can also slow the pulse too far. Any new palpitations, dizziness or fainting after starting a rhythm medicine should be reported promptly.

When should someone with an arrhythmia call a doctor or emergency services?

Call emergency services for chest pain that does not settle, sudden severe breathlessness, fainting, any stroke sign such as facial drooping, arm weakness or slurred speech, or repeated ICD shocks. Call the care team the same day for a racing or very slow pulse that will not settle, a growing or hot lump at a puncture site, wound redness or fever after a device implant, or unexplained bleeding while taking an anticoagulant.

References

• NHS – Atrial fibrillation: Treatment
• Cleveland Clinic – Catheter Ablation
• NHS – Pacemaker implantation
• MedlinePlus – Arrhythmia

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.