Most people who experience heart palpitations can still have surgery, but whether the operation proceeds on schedule depends on what is causing those palpitations and how the heart is functioning overall. Palpitations are among the most common complaints doctors hear, and the vast majority turn out to be harmless extra beats or brief runs of fast rhythm in an otherwise healthy heart. The real question your surgical team is asking is not “do you have palpitations?” but rather “is there an underlying heart problem driving them?” That distinction shapes everything from timing to anesthesia technique.
Why Surgeons and Anesthesiologists Care About Palpitations
When you report palpitations before a scheduled operation, the concern is not the fluttery feeling itself. It is what might be lurking behind it. Surgery and anesthesia place real stress on the cardiovascular system: blood pressure swings, fluid shifts, pain responses, and the direct effects of anesthetic drugs all push the heart harder than a normal day would. If a rhythm disturbance is the only sign of a weakened heart muscle, uncontrolled thyroid disease, or a valve problem, operating without knowing that puts you at risk for a serious complication on the table or in the recovery room.
The 2024 joint guideline from the American Heart Association, the American College of Cardiology, and several other specialty societies lays out a structured approach for evaluating cardiovascular risk before noncardiac surgery. The guideline’s central message is that the decision to proceed hinges on a patient’s overall cardiac status, not on a single symptom in isolation.1PubMed. 2024 AHA/ACC/ACS/ASNC/HRS/SCA/SCCT/SCMR/SVM Guideline for Perioperative Cardiovascular Management for Noncardiac Surgery In practice, that means your surgical team will want to know the type of palpitation you are experiencing, how often it happens, what triggers it, and whether your heart’s structure and pumping function are normal.
Benign Palpitations Versus Worrisome Ones
The most common culprits behind that skipped-beat sensation are premature ventricular contractions (PVCs) and premature atrial contractions (PACs). Nearly everyone has a few of these extra beats every day without noticing. In a structurally normal heart, PVCs are almost always benign. A review in the journal Heart notes that while ventricular ectopic beats are common in clinical practice and frequently harmless in structurally normal hearts, they can occasionally be linked to more serious arrhythmias, which is why a careful evaluation is needed to tell the difference.2PubMed Central. Treating patients with ventricular ectopic beats
The evaluation usually starts with a 12-lead electrocardiogram (ECG) and, if the palpitations are frequent enough, a longer recording with a Holter or event monitor. Your doctor will also want blood work to check thyroid function, electrolyte levels, and blood count. If everything comes back normal and an echocardiogram shows a structurally sound heart, the palpitations are very unlikely to cause problems during surgery. In that scenario, most operations proceed without delay.
Palpitations that raise a red flag tend to come with other symptoms: fainting or near-fainting, chest pain, severe shortness of breath, or a heart rate that stays very fast for extended periods. Sustained ventricular tachycardia, for instance, is a different animal entirely from an occasional PVC. If your workup reveals structural heart disease alongside ventricular rhythm disturbances, the stakes change. Research in Anesthesia & Analgesia found that noncardiac surgical patients with preoperative ventricular dysrhythmias and structural heart disease face an increased risk of adverse cardiac outcomes.3Anesthesia & Analgesia. Perioperative Ventricular Dysrhythmias in Patients with Structural Heart Disease Undergoing Noncardiac Surgery For these patients, surgery might still happen, but with extra monitoring, a cardiology consultation, and sometimes treatment of the arrhythmia first.
How the Anesthesia Team Manages Rhythm Issues During Surgery
Modern anesthesia suites are essentially intensive-care setups. Continuous ECG monitoring, pulse oximetry, and blood pressure readings give the anesthesiologist a real-time picture of what your heart is doing at every moment. If an arrhythmia appears, there are drugs readily available to slow, speed, or stabilize the heart rhythm as needed.
An important principle that sometimes surprises patients: not every arrhythmia that pops up during surgery needs to be treated. A review in the Indian Journal of Anaesthesia emphasizes that cardiac tachyarrhythmias during the perioperative period do not always require intervention, and in some cases, aggressive management can actually trigger more dangerous rhythm disturbances.4PubMed Central. Cardiac tachyarrhythmias and anaesthesia: General principles and focus on atrial fibrillation The anesthesiologist weighs the type of arrhythmia, the heart rate, blood pressure stability, and whether the patient is tolerating it before deciding whether to give medication. A few extra PVCs on the monitor are typically left alone. A rapid sustained run of atrial fibrillation with a falling blood pressure is a different situation that warrants immediate treatment.
Several anesthetic agents and adjunct drugs used routinely in the operating room can themselves provoke or suppress extra beats. Volatile anesthetic gases tend to sensitize the heart muscle to catecholamines, while opioid pain medications generally slow the heart. The anesthesiologist tailors the drug cocktail to your specific rhythm profile. If you have a known tendency toward a particular arrhythmia, that information should be shared during your preoperative visit so the team can plan accordingly.
What About Beta-Blockers and Other Heart Medications?
If you already take a beta-blocker for palpitations, high blood pressure, or another heart condition, you might wonder whether to keep taking it on the morning of surgery. The conventional wisdom for years was that continuing beta-blockers right up to and through surgery protected the heart. The evidence, however, has become more nuanced.
A multicenter propensity-matched analysis published in the British Journal of Anaesthesia found that maintaining beta-blockers on the day of cardiac surgery was not associated with a reduced rate of postoperative atrial fibrillation. The study also found that continuing these drugs was linked to greater use of vasopressors (medications to raise blood pressure), which may contribute to kidney complications after surgery.5PubMed. Maintenance of beta-blockers and cardiac surgery-related outcomes: a prospective propensity-matched multicentre analysis That does not mean you should skip your beta-blocker on your own; abruptly stopping one can cause a rebound spike in heart rate that is itself dangerous. The decision belongs to your surgical and anesthesia team, who will weigh the benefits against the risks for your specific case.
Other anti-arrhythmic drugs, blood thinners, and rate-control medications each have their own perioperative rules. Some need to be continued, some paused, some bridged with a short-acting alternative. The safest move is to bring every medication bottle to your preoperative appointment and ask specifically which ones to take the morning of surgery.
Palpitations That Show Up After Surgery
Even people who have never felt a palpitation in their lives can develop rhythm disturbances after an operation. This is especially common after cardiac surgery, where the heart has been directly handled, but it happens after other surgeries too. The stress response, fluid changes, electrolyte shifts, and pain all converge to make the heart electrically irritable in the early postoperative days.
Atrial fibrillation is the single most frequent rhythm disturbance after cardiac surgery. A review in BioMed Research International describes postoperative arrhythmias as a major cause of morbidity, longer hospital stays, and higher costs. Both fast rhythms (tachyarrhythmias) and slow rhythms (bradyarrhythmias) can occur. The good news is that postoperative atrial fibrillation is often self-limiting, meaning it resolves on its own, though it may require temporary blood-thinning medication and either rate or rhythm control while it lasts.6PubMed Central. Postoperative arrhythmias after cardiac surgery: incidence, risk factors, and therapeutic management
You might expect that correcting electrolytes like potassium and magnesium would prevent these postoperative arrhythmias, but the picture is less straightforward than it sounds. A time-matched analysis published in The Annals of Thoracic Surgery found that patients who developed atrial fibrillation after cardiac surgery actually had higher potassium and magnesium levels at the time the arrhythmia started compared to those who stayed in normal rhythm. Magnesium level was an independent predictor of postoperative atrial fibrillation on multivariate analysis.7PubMed Central. Potassium and Magnesium Supplementation do not protect against Atrial Fibrillation after Cardiac Surgery: a Time-Matched Analysis This counterintuitive result does not mean electrolyte balance is unimportant, but it does suggest that simply pumping patients full of supplements is not the protective strategy many clinicians assumed it was.
Everyday Triggers the Surgical Setting Makes Worse
Some of the most common triggers for palpitations are baked into the surgical experience itself, even for people with perfectly healthy hearts. Anxiety is the obvious one. The hours leading up to an operation are stressful, and adrenaline-driven palpitations are extremely common in preoperative holding areas. A study on preoperative anxiety in heart surgery patients highlights the physiological and psychological burden of waiting for an operation.8Revista Brasileira de Enfermagem. Anxiety in the preoperative period of heart surgery
Fasting is another culprit that gets less attention. You are told not to eat or drink for several hours before surgery to keep your stomach empty, but prolonged fasting drops blood sugar, which activates the sympathetic nervous system. A study in the International Journal of Nursing Sciences found that patients who fasted for extended periods before procedures experienced symptoms including palpitations, dizziness, irritability, and anxiety, all driven by low blood sugar and the body’s stress response to it.9International Journal of Nursing Sciences. Study on timing of preoperative fasting and water deprivation in patients receiving fiberoptic bronchoscopy If your surgery gets delayed and you have been fasting since the night before, those palpitations sitting in the waiting room may be your body signaling low fuel rather than a heart problem. Let your nurse know, because intravenous fluids or glucose can help.
Caffeine withdrawal is another sneaky contributor. If you normally drink several cups of coffee and suddenly stop the morning of surgery, a withdrawal headache and a racing or irregular heartbeat are not unusual. Dehydration from the fasting period compounds the problem. None of these triggers are dangerous on their own, but they can make an anxious patient even more anxious, which feeds a cycle of more adrenaline and more palpitations.
If You Have a Pacemaker or Implantable Defibrillator
Patients with implanted cardiac devices are a special category when it comes to surgery, not because the operation is necessarily more dangerous, but because operating-room equipment can interfere with the device. Electrocautery, the tool surgeons use to cut and seal tissue with electrical current, is the main concern. Its electromagnetic energy can confuse a pacemaker or defibrillator into misreading the heart’s rhythm.
A review in the Annals of Surgery lays out the standard approach: pacemakers should be reprogrammed into an asynchronous or triggered mode before surgery so they continue pacing regardless of what the electrocautery signal looks like. For implantable cardioverter-defibrillators (ICDs), the arrhythmia detection function should be suspended before the operation so the device does not deliver a shock in response to electrocautery noise that it mistakes for a dangerous heart rhythm.10PubMed Central. Surgical Management of the Patient with an Implanted Cardiac Device External defibrillator pads are placed on the patient as a backup during the case, and the device is reprogrammed back to its normal settings after surgery.
If you have a pacemaker or ICD and are scheduled for surgery, the preoperative team will typically contact your cardiologist or the device manufacturer’s representative to arrange reprogramming. Bring your device identification card to every surgical appointment so the team knows exactly which model you have and what settings it uses.
Pregnancy, Heart Palpitations, and Surgical Decisions
Pregnant people experience palpitations at a far higher rate than the general population. Blood volume increases substantially during pregnancy, the resting heart rate climbs, and hormonal shifts make the heart more prone to extra beats. Most of these palpitations are harmless, but they can alarm a patient and a surgical team alike if an emergency or semi-urgent procedure is needed during pregnancy.
The American Heart Association published a scientific statement on anesthetic care for pregnant patients with cardiovascular disease, noting that maternal outcomes improve with expert anesthesiology care that includes management of neuraxial anesthesia, inotrope and vasopressor support, echocardiography, and consideration of advanced critical care when needed.11PubMed. Anesthetic Care of the Pregnant Patient With Cardiovascular Disease: A Scientific Statement From the American Heart Association In other words, even when pregnancy and a cardiac condition overlap, the operation can proceed safely when the team is prepared. The threshold for cardiac consultation is lower in pregnancy, and the monitoring is more intensive, but palpitations alone do not rule out a needed procedure.
Local Anesthesia and Minor Procedures
Not every surgery means going under general anesthesia. For minor procedures done under local anesthesia, patients with palpitations sometimes worry that the numbing injection itself will set off their heart. Epinephrine, which is mixed into many local anesthetics to prolong numbness and reduce bleeding, is a stimulant and can theoretically speed the heart.
A study of patients with cardiac valvular disease who received dental anesthesia compared a plain lidocaine formulation with one containing epinephrine. The arrhythmias present before the injection did not change in form or intensity afterward in either group, and blood pressure and heart rate remained stable. The researchers concluded that lidocaine with epinephrine at the standard dental concentration was safe in these patients for minor interventions.12PubMed Central. Locoregional Anesthesia for Dental Treatment in Cardiac Patients: A Comparative Study of 2% Plain Lidocaine and 2% Lidocaine with Epinephrine (1:100,000) A systematic review on local anesthesia with vasoconstrictors in cardiovascular-compromised patients found that the most frequent complication was arrhythmia, but no severe adverse clinical effects were reported across the studies reviewed.13PubMed Central. Clinical assessment of the safe use local anaesthesia with vasoconstrictor agents in cardiovascular compromised patients: A systematic review
For patients who are particularly sensitive or have very frequent arrhythmias, the clinician can opt for a local anesthetic without epinephrine or use the lowest effective concentration. The point is that having palpitations does not mean you need to avoid the dentist’s chair or a minor outpatient procedure. The doses of epinephrine in a local injection are tiny compared to what your own adrenal glands release during a moment of fear or exertion.
What to Tell Your Surgical Team
The single most useful thing you can do before surgery is give your anesthesiologist a clear picture of your palpitations. Describe when they happen (at rest, with exercise, after caffeine), how long they last, whether you have ever fainted or felt like you might, and whether you have had any cardiac testing. If you have had an ECG, Holter monitor, echocardiogram, or stress test in the past, bring the results or the name of the ordering physician so records can be pulled.
If your palpitations are new and you have not seen a cardiologist, mention this at your preoperative visit rather than hoping no one asks. A simple workup can often be done quickly enough to avoid delaying your surgery. Conversely, if you have already been told by a cardiologist that your palpitations are benign, communicate that clearly, because the anesthesia team may not have access to those records and might otherwise order duplicate testing or request a last-minute cardiology consultation that delays your case.
Elective surgery is sometimes postponed when a new or unexplained arrhythmia is discovered preoperatively, but “postponed” is not the same as “canceled forever.” It means the team wants more information before proceeding safely. For urgent and emergency surgeries, the operation goes forward regardless of palpitations, with the anesthesia team managing the rhythm in real time. The operating room is one of the most monitored and equipped environments in medicine, and rhythm disturbances are something anesthesiologists deal with routinely.