Tachycardia, a resting heart rate above 100 beats per minute, is treated differently depending on its type and severity. Some episodes can be stopped at home with simple breathing techniques, while others require medications, medical procedures, or implantable devices. The right approach depends on where the abnormal rhythm originates in your heart, how fast it beats, and whether it causes dangerous drops in blood pressure.
Vagal Maneuvers: The First Thing to Try
For many types of supraventricular tachycardia (fast rhythms originating in the upper chambers of the heart), the first line of treatment is something you can do yourself. Vagal maneuvers work by stimulating the vagus nerve, which slows electrical conduction through the heart and can break the cycle that keeps the fast rhythm going.
The most common technique is the Valsalva maneuver: lie flat on your back and bear down hard, as if you’re straining during a bowel movement, for about 20 seconds. Don’t take a deep breath before you start. This creates a pressure shift in your chest that first activates your body’s fight-or-flight response, then triggers a strong counteracting wave of vagal activity that can snap the heart back into normal rhythm. Another option is carotid sinus massage, where firm pressure is applied to the carotid artery high on one side of the neck for about five seconds. This one is typically performed by a healthcare provider rather than on your own, since it carries some risk in people with narrowed neck arteries.
These techniques work best for the two most common types of SVT, where the electrical signal gets caught in a loop either within or near a structure called the AV node. They won’t help with ventricular tachycardia or atrial fibrillation.
Medications for Ongoing Management
When vagal maneuvers aren’t enough, or when tachycardia keeps coming back, medications become the main treatment tool. The two most commonly used drug classes are beta-blockers and calcium channel blockers. Beta-blockers slow your heart by blocking the effects of adrenaline on the heart muscle. Calcium channel blockers work by slowing electrical signals through the AV node. Both are considered reasonable options for people with recurring SVT.
For more dangerous rhythms like ventricular tachycardia, the medication choices shift. Amiodarone is one of the most widely used drugs for serious arrhythmias because it affects multiple electrical pathways in the heart simultaneously. In emergency settings where someone has stable ventricular tachycardia, procainamide has been shown to be more effective than several alternatives at stopping the rhythm. One study found that a related drug terminated ventricular tachycardia in 69% of patients, compared to only 18% with an older alternative.
For a less common condition called inappropriate sinus tachycardia, where the heart’s natural pacemaker simply fires too fast without an obvious trigger, a newer medication called ivabradine can slow the sinus node directly without affecting blood pressure.
Catheter Ablation
Catheter ablation is a procedure where a thin wire is threaded through a blood vessel (usually in the groin) up to the heart. The tip delivers radiofrequency energy or extreme cold to destroy the tiny patch of tissue causing the abnormal rhythm. It’s the closest thing to a cure for many types of tachycardia.
Success rates are impressive for SVT: 90% to 95% of people are permanently free of their arrhythmia after a single procedure. For atrial tachycardia and ventricular tachycardia, success rates are lower, in the range of 60% to 80%. Clinical guidelines recommend that people with recurring, symptomatic SVT be considered for ablation, and it’s also the preferred treatment for a common type of atrial flutter.
Recovery is relatively quick. The procedure itself takes a few hours, and most people return to desk work within five to seven days. One important thing to know: you may still experience episodes of fast heart rate during the first three months after the procedure. This doesn’t necessarily mean it failed. The heart tissue needs time to fully heal, and the complete effect of the ablation can take several weeks to settle in.
Electrical Cardioversion and Defibrillation
When tachycardia causes dangerous symptoms like fainting, chest pain, or critically low blood pressure, electrical treatment may be needed immediately. There are two forms, and the distinction matters.
Synchronized cardioversion delivers a carefully timed electrical shock that’s coordinated with the heart’s own electrical cycle. It’s used for SVT and hemodynamically stable ventricular tachycardia, essentially “resetting” the heart’s rhythm. You’re typically sedated for this, and the timing of the shock is critical to avoid triggering a worse rhythm.
Defibrillation is the more dramatic version: an unsynchronized shock delivered during cardiac arrest caused by ventricular fibrillation or pulseless ventricular tachycardia. In these situations, the heart is in such electrical chaos that synchronization isn’t possible. Speed is everything here. A short time to defibrillation is the single biggest factor determining survival.
Implantable Devices
For people at ongoing risk of life-threatening ventricular tachycardia or ventricular fibrillation, an implantable cardioverter-defibrillator (ICD) provides a permanent safety net. This small device, placed under the skin near the collarbone, continuously monitors heart rhythm and delivers an automatic shock if it detects a dangerous arrhythmia.
ICDs are considered appropriate for people who have survived an episode of sustained ventricular tachycardia or ventricular fibrillation that wasn’t caused by a temporary, fixable problem. They’re also recommended for people with significant coronary artery disease whose blocked arteries can’t be fully opened, regardless of how well the heart pumps. The 2025 criteria from the American College of Cardiology make clear that the decision depends more on the type of arrhythmia and the underlying heart condition than on a single test number.
Rate Control vs. Rhythm Control
For some types of tachycardia, particularly atrial fibrillation, there’s a strategic choice between two approaches. Rate control means accepting that the heart’s upper chambers will continue to beat irregularly but using medications to keep the overall heart rate at a reasonable speed. Rhythm control means actively trying to restore and maintain a normal rhythm, through medications, ablation, or both.
Several factors tip the balance toward rhythm control: younger age, a heavy burden of symptoms, heart failure, weakened heart muscle, and a left atrium that hasn’t yet stretched significantly. People whose atrial fibrillation is relatively new also tend to benefit more from rhythm control, since the heart hasn’t yet remodeled around the abnormal pattern.
Lifestyle Changes That Reduce Episodes
Regardless of the type of tachycardia you have, certain triggers consistently make episodes more frequent. Caffeine is a direct cardiac stimulant, and it shows up in more places than just coffee: tea, energy drinks, soda, and dark chocolate all count. Alcohol is another well-known trigger, with even moderate amounts provoking episodes in some people.
High-sodium foods deserve attention too. Excess salt causes fluid retention and raises blood pressure, which adds strain to the heart. Processed foods, canned soups, fast food, deli meats, and soy sauce are common culprits. Refined sugars can trigger blood sugar spikes that indirectly lead to palpitations through the body’s insulin response.
Watch for hidden stimulants. Many energy drinks contain not just caffeine but also guarana and taurine. Some cold and flu medications contain pseudoephedrine, which acts as a stimulant. Certain herbal supplements have similar effects. Large, heavy meals can put pressure on the diaphragm and stimulate the vagus nerve in ways that paradoxically trigger arrhythmias rather than suppress them.
Dehydration is an often overlooked trigger. When your blood volume drops, your heart compensates by beating faster to maintain circulation. Staying consistently hydrated is one of the simplest things you can do to reduce the frequency of tachycardia episodes.