Does your heart suddenly race for no clear reason? Let us talk about PSVT!

Have you ever felt your heart suddenly start beating so fast that your chest thuds and pounds, only for it to return to normal just as quickly? You might wonder if it is just stress, anxiety, or nothing at all to worry about.

Sometimes, this sudden rapid heartbeat is more than just a passing moment of fear or nervousness. Today, we will talk about a heart rhythm condition called Paroxysmal Supraventricular Tachycardia, known simply as PSVT.

Do not panic because we will break down everything in clear, simple everyday words so you can easily understand what is happening inside your chest.

What Is PSVT?

Simply put, PSVT is an abnormal heart rhythm or arrhythmia. During an episode, your heart starts racing at a very high speed out of nowhere.

After a short while, your heart rate drops right back down to normal just as fast. Doctors use the word paroxysms to describe these sudden bursts of fast heartbeats.

This condition happens because of unusual electrical signals starting in the upper chambers of your heart, which are called the atria. Your heart also has two lower chambers called the ventricles.

All four chambers work together smoothly to pump blood throughout your entire body. When PSVT occurs, the upper chambers fire off electrical signals too quickly, causing the heart to squeeze rapidly.

The most important thing to remember is that PSVT is not always a dangerous medical emergency. Many people experience mild episodes that go away without any medical treatment at all.

If you need help, your doctor can suggest medicines, special heart treatments, or very rarely a pacemaker. If you ever feel anything unusual about how your heart beats, always see a doctor for a proper checkup.

How Your Heart Works Normally.

Before we look deeper into PSVT, let us understand how a healthy heart works every single day. In a healthy heart, each beat starts in a tiny group of tissue located in the upper right chamber.

This natural pacemaker is called the sinoatrial node, or the SA node. The SA node sends out electrical signals that tell your upper heart chambers to squeeze and push blood along.

Next, those electrical signals travel down to another small group of cells sitting between the upper and lower chambers. This second group is called the atrioventricular node, or the AV node.

The AV node acts like a gateway, passing the electrical signal onward to make your lower chambers squeeze. That is how your heart beats in a steady, reliable rhythm.

Are There Different Types of PSVT?

Yes, the broad term PSVT includes a few different specific heart rhythm patterns. These happen when extra electrical connections exist between your upper and lower heart chambers, or right through the AV node.

When these extra pathways form, electrical signals loop around in circles. That causes your heart rate to speed up dangerously fast, a condition known medically as tachycardia.

Doctors use specific names to identify these different types of fast heart rhythms:

• Atrioventricular nodal re-entrant tachycardia, also known as AVNRT.
• Orthodromic reciprocating tachycardia, or ORT.
• Antidromic reciprocating tachycardia.
• Atrial tachycardia.
• Atrial flutter.

These medical names might sound complicated, but they help your doctor figure out the exact cause of your fast heartbeat so you get the right treatment.

How Common Is This Condition?

Heart rhythm disorders, or arrhythmias, are actually very common. Millions of people all around the world live with some form of irregular heartbeat every single day.

Supraventricular tachycardias, or SVT conditions, are especially common among young children and babies. They represent one of the most frequent types of heart rhythm irregularities seen in pediatrics.

This condition also appears more often in children who are born with congenital heart defects.

Why Does PSVT Happen and What Are the Causes?

PSVT is a heart rhythm problem caused by abnormal electrical pathways in the upper chambers. Sometimes, an extra wiring path between your upper and lower chambers lets electrical signals travel too fast.

A well-known example is Wolff-Parkinson-White syndrome, where people are born with an extra electrical pathway. When signals rush down this extra path instead of the normal AV node, your heart beats far too fast.

Just like many other heart rhythm issues, PSVT can also run in families. If a close relative has it, your chances of having it are higher.

Many other everyday triggers and health factors can also bring on an episode:

• Natural body changes as you grow older.
• Anemia. This your body lacks enough healthy red blood cells to carry oxygen.
• Dehydration and severe physical exhaustion.
• Drinks and foods high in caffeine like coffee, tea, chocolate, and energy drinks.
• Eating very heavy, high-fat, or sugary meals that make your stomach feel too full.
• Certain cold medicines containing pseudoephedrine that clear stuffy noses.
• Drinking too much alcohol.
• Previous heart attacks or past heart surgeries that left scar tissue.
• Coronary artery disease, where heart arteries become narrowed.
• High blood pressure, or hypertension.
• High stress levels, panic, or severe anxiety.
• Hormonal changes during pregnancy or menopause.
• Obesity and carrying extra body weight.
• Smoking cigarettes and using tobacco products.
• Structural heart valve problems.
• Thyroid gland disorders, especially hyperthyroidism where the thyroid is overactive.

What Are the Symptoms of PSVT?

PSVT symptoms usually start out of nowhere and stop just as suddenly. Some people feel very mild fluttering. This others experience strong, uncomfortable pounding.

You might notice these feelings after finishing a hard workout, after a poor night of sleep, or when dealing with high stress.

The main signs and symptoms include:

• A fast and steady racing heart rate. Normal resting rates are 60 to 100 beats per minute, but PSVT can push your heart over 100 or even up to 250 beats per minute.
• Strong pounding, thudding, or flipping feelings in your chest, throat, or neck, often called palpitations.
• Sudden changes in how fast your heart beats, going from racing back to normal in a split second.

During an active PSVT episode, you might also experience several other physical warning signs:

• Feeling anxious, restless, or confused.
• Chest pain, tightness, or general chest discomfort.
• Trouble catching your breath or feeling short of breath.
• Lightheadedness, dizziness, or dark spots in your vision.
• Fainting or passing out completely.
• Extreme tiredness and lack of energy.
• Feeling sick to your stomach or nauseated.

How Do Doctors Diagnose PSVT?

When you visit a doctor, they will ask detailed questions about your symptoms and listen to your heart using a stethoscope. They will likely order routine blood tests to check your thyroid function and overall health.

Next, your doctor will perform an electrocardiogram, commonly called an EKG or ECG. This quick, painless test takes about 15 minutes right in the clinic.

An EKG uses small sticky sensors placed on your skin to record your heart's electrical signals. If your doctor suspects exercise triggers your episodes, they may ask you to do an exercise stress test.

If an in-office EKG does not catch the irregular rhythm because it stopped, your doctor will give you an ambulatory monitor. Devices like a Holter monitor or a patch monitor can be worn at home for a few days or up to a month to record your heart rate continuously.

How Is PSVT Treated?

Depending on your overall health and how severe your symptoms are, you might not need active treatment right away. If you have an irregular heart rhythm, your doctor will likely refer you to a cardiologist, who is a heart specialist.

Your doctor may suggest simple everyday adjustments to help prevent episodes:

• Avoid alcohol and caffeine found in coffee, tea, and soft drinks.
• Stop taking over-the-counter decongestants that contain pseudoephedrine.
• Get plenty of quality sleep and rest every night.
• Drink plenty of water to stay well-hydrated throughout the day.
• Practice relaxation exercises to help lower stress and anxiety.
• Maintain a healthy body weight with guidance from your medical team.
• Quit smoking and avoid all tobacco products completely.

If an episode happens, your doctor can teach you safe physical techniques known as vagal maneuvers to temporarily slow your heart rate down. Common examples include:

• Splashing cold water directly onto your face.
• Doing a special monitored cough.
• Applying gentle pressure over closed eyelids.

Important: Never try vagal maneuvers on your own without professional guidance. Always learn the correct technique directly from your doctor.

• Another helpful method is the Valsalva maneuver. You take a deep breath, pinch your nose, bear down like you are straining, and blow out hard to help slow a racing heart.

If your heart rhythm changes happen often, cause heavy discomfort, or if you have other heart issues, medical treatments become necessary. Treatment options include:

• Catheter ablation, a minor procedure where doctors use a thin tube threaded through a blood vessel to fix the tiny area sending bad electrical signals.
• Carotid sinus massage, where a doctor applies gentle pressure to a specific spot on your neck to slow the heart rate. This must be done by a medical professional in a clinic.
• Implantable devices like an implantable cardioverter-defibrillator, known as an ICD, or a permanent pacemaker.
• Electrical cardioversion, which delivers a safe, controlled jolt of energy to reset your heart back to a normal rhythm.
• Prescription medicines designed to control your heart rhythm and stop fast beats before they start.

How Can You Lower the Risk of PSVT?

You cannot prevent every single case of PSVT, but you can lower your risks by living a healthy, smart lifestyle. Helpful prevention steps include:

• Eating a heart-healthy diet packed with vegetables, fruits, and fiber while keeping salt, sugar, and unhealthy fats low.
• Staying away from personal triggers that you know start your racing heart.
• Staying physically active with regular exercise to keep your body fit.
• Working with your doctor to maintain a safe and healthy weight.
• Controlling high blood pressure through proper care.
• Keeping your blood cholesterol levels in a healthy range.
• Quitting smoking and avoiding tobacco smoke.
• Talking to your doctor if you or your child have health conditions that raise heart risks, so you get tailored advice.

What Happens to Someone with PSVT?

Your long-term outlook with PSVT depends on your age and your overall physical health. Making healthy lifestyle choices and adjusting your daily habits can help control your symptoms well.

Over a long period, untreated fast heart rates can tire out your heart muscle. In severe cases, PSVT can lead to fainting or even sudden cardiac arrest.

That is why keeping regular appointments with your doctor to check your heart health is so important.

The great news is that in most cases, a procedure called catheter ablation can completely cure PSVT and stop episodes from returning.

When Should You See a Doctor?

If you feel worried about your heart rate or notice any signs of an irregular rhythm, talk to a doctor right away. If you already have a formal PSVT diagnosis, keep regular checkups with your cardiologist.

PSVT Management and Lifestyle Comparison.