Is your child's heartbeat irregular? Let's learn everything about pediatric arrhythmia!

While your child is playing or sleeping, have you ever felt that their heart rate suddenly seems to be very fast? Or sometimes it seems to be beating very fast? Maybe if they are a little older, they will tell you, "Mom, my chest is beating very fast" or "It feels like there is a drum beating in my chest." It is normal for a mother or father to feel a little scared when they hear or see something like this. But don't worry, most of the time this is not serious. Today we are talking about these changes in the heart rhythm that occur in children, which is a condition called arrhythmia in medical terms.

Simply put, what is arrhythmia?

Arrhythmia, simply put, is any change in the normal, regular rhythm of our heart. This can occur in adults as well as young children.

There are several things that could happen here:

• Your child's heart is beating faster than normal .
• The heart beats faster than normal .
• It feels like a heartbeat is getting in the way .
• Having an extra heartbeat .

Most of the time, this condition does not require any special treatment. However, in rare cases, it can be serious. Therefore, it is very important to be aware of this.

How does our heart work? A brief explanation

Before we understand what arrhythmia is, let's take a simple look at how our heart works to keep a rhythm. Think of the heart as a small 'engine room'. It has a special electrical system. This is what controls the rate and rhythm of the heart.

Just like the wiring system in a house, this also works step by step:

1. The first signal: Every heartbeat begins with an electrical signal from a small cluster of cells in the upper right side of the heart. We call this the ``Sinoatrial node`` or ``SA node``. This is the heart's natural 'pacemaker.''

2. The upper chambers contract: This electrical signal causes the two upper chambers of the heart (the `Atria`) to contract, pumping the blood into the two lower chambers (the `Ventricles`).

3. The signal goes down: This signal then goes to another group of cells. It is called the ``Atrioventricular node`` or ``AV node``. This is like a ``wire`` that carries electricity from the top to the bottom.

4. The lower chambers contract: The AV node sends another signal to the two lower chambers of the heart (the ventricles). When the two lower chambers receive that signal, they contract, pumping blood out of the heart to the rest of the body.

5. Rest and start again: Finally, the two chambers relax, and a new heartbeat begins with the next electrical signal.

When this process happens properly, the heart beats at a regular rate and rhythm. But if there is a disruption or problem anywhere in this electrical system, then an arrhythmia occurs.

How common is arrhythmia among children?

In fact, arrhythmia is very common in children and is usually harmless . That means there is nothing to worry about. But as we mentioned earlier, very rarely, this condition can be serious or even life-threatening. That is why it is important to be aware of the symptoms.

What types of arrhythmias occur in children?

There are several types of arrhythmia that occur in both adults and children. Let's simply categorize them.

So what is Sinus Arrhythmia?

You may be scared to hear this word. But `Sinus Arrhythmia` is not actually a medical condition. It is a completely normal and healthy condition seen in children.

This is when the child's heart rate increases slightly when they inhale and decreases slightly when they exhale. This is a sign of good heart health. It does not require any treatment.

What are the symptoms of arrhythmia in a child?

Symptoms can vary greatly depending on the type of arrhythmia a child has. Some children may not show any symptoms at all. Common symptoms include:

• Feeling chest pain or discomfort.
• Dizziness , lightheadedness, or fainting (syncope).
• Shortness of breath or difficulty breathing (dyspnea).
• Feeling very tired or weak.
• Palpitations are a feeling of the heart beating very fast . They can feel like butterflies flying in the chest, like a door opening, or like the sound of the heart beating loudly.

Rarely, the first symptom may be a seizure, fainting, or sudden cardiac death.

What causes arrhythmia in children?

Most of the time, children with conditions like SVT have no other structural problems with their hearts. However, there are several factors that can cause other types of arrhythmia.

• Congenital heart disease .
• Diseases such as cardiomyopathy , which cause the heart muscle to thicken and enlarge.
• Genetic conditions , for example, long QT syndrome.
• Fever, dehydration, stress, lack of sleep, or inflammatory conditions in the body.
• Viral or bacterial infections .
• Electrolyte imbalances in the body's electrolytes (e.g. potassium, sodium).
• Certain medications , especially those given to children in intensive care units.

How does a doctor diagnose this condition?

Most often, a doctor discovers this during a routine checkup or while treating another condition. If you have any concerns about your child's symptoms, be sure to talk to your doctor about it.

The doctor will ask about the child's and family's medical history, listen to the child's heart, and recommend several tests, if necessary.

How is arrhythmia treated?

Some arrhythmias do not require any treatment. The doctor will say to observe the child's condition for a while.

In other cases, the underlying condition causing the arrhythmia is treated. For example, if it is due to an infection, antibiotics are given. If it is an imbalance of salts in the body, medication is given to correct it.

Some children may be given medications such as `beta-blockers` or `calcium channel blockers` to control their heart rhythm.

In more serious cases, specific procedures such as these may be necessary:

• Ablation: In this, small cells in the heart that are causing the arrhythmia are destroyed using heat or high-temperature energy.
• Cardioversion: This is a procedure that restores the heart's rhythm by administering a controlled electrical shock to the heart.
• Implanted Device: A device, such as a pacemaker or implantable cardioverter defibrillator (ICD), that is implanted under the skin to control the heart's rhythm.

Are there things you can do at home when symptoms occur?

Yes. Especially in cases of sudden rapid heartbeat like SVT, there are some simple things you can try before seeing a doctor. It is best to ask your doctor for advice before doing these.

• Trying to forcefully cough or clear your throat.
• Placing an ice pack or a cloth soaked in cold water on the child's face.
• Valsalva maneuver: This involves pinching the child's nose, closing their mouth, and trying to breathe out. It's like inflating a balloon. This can increase the pressure inside the chest and help the heart rate return to normal.

How will this situation affect you in the long term?

This is the biggest question on every parent's mind: what will be the future of a child with arrhythmia?

• The good news is that most types of arrhythmias in children are harmless and do not cause long-term health problems.
• Some children outgrow this condition as they grow older .
• Others continue to have this condition, but can live a normal life without any treatment.
• Even children with severe arrhythmias can be treated successfully .

Rarely, if left untreated , a serious arrhythmia can lead to blood clots (which can cause a stroke if they travel to the brain), heart failure, or other complications. That's why it's important to seek medical advice rather than ignoring symptoms.

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