What are the reasons for installing a pacemaker?
In today's article, let us understand together what the process of installing a pacemaker is, and let us learn about the reasons for resorting to it and its benefits, as well as its possible complications.
The natural system that controls the heartbeat
In order to understand what electrical heart disorders are, we must first understand the nature of the system that controls the heart's rhythm.
The heart consists of four basic chambers: two chambers on the upper left side (left atrium and right atrium), and two chambers on the lower right side (right ventricle and left ventricle).
The heart does not beat randomly. Rather, it beats according to a specific system called the “electrical heart system.” This system controls the heart rate through a mass of cells called the sinoatrial node (SA node). This mass sends electrical signals that cause the heart’s upper chambers (atria) to contract.
Note: The normal rate of atrial contraction in a healthy adult is estimated to be 60 to 100 beats per minute.
What is a pacemaker?
A pacemaker is a small device—about the size of a box of matches—that sends electrical signals to the heart muscle to regulate the heart rate.
How does a pacemaker work?
The pacemaker consists of the following:
- A battery that generates electrical signals.
- Leading wires connected to the heart.
- A dedicated sensor to recognize body movement and breathing rate.
The battery emits electrical signals at a precise, calculated rate to the heart through wires connected to the heart.
Note: Pacemaker Implantation requires a minor surgical procedure to install the device in region الصدر.
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Reasons for installing a pacemaker
The heart is nothing but a muscular pump that pumps blood to all parts of the body, and that pump (i.e. the heart muscle) is controlled by a set of electrical signals coming from the sinoatrial node (SA node).
The electrical signals controlling the heart rate may be disturbed, leading to one of the following problems:
- Heart rate disturbance (slow or rapid heartbeat)
- Heart block, a condition caused by electrical signals not being transmitted from the sinoatrial node to the heart in the correct manner.
- Cardiac arrest (the heart stops beating).
To solve the problems of irregular heart rate, doctors resort to implanting a pacemaker to improve the individual's quality of life and help him carry out his daily life.
Steps for implanting a pacemaker
Steps in the pacemaker installation process include:
- Make a small surgical incision in the upper left chest area.
- Determine the appropriate vein to insert the pacemaker leads.
- The device's flexible wires are gradually inserted through the selected vein until they reach the heart muscle.
- Ensure that the device's wires are in the correct area using X-rays.
- Making a small pocket in the chest muscles to implant the body of the device itself (the electrical generator).
- Connecting one end of the wires to the generator, so that one end of the wires is connected to the heart, while the other end is connected to the device itself.
The person undergoes the steps of the pacemaker installation process under the influence of light sedation, meaning that the person is conscious during this process.
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Types of pacemakers
Pacemakers pacemakers are used to regulate the heart rhythm when disorders such as bradycardia or arrhythmia occur. The types of devices vary based on the number of chambers they operate on and the purpose for which they are used. Here are the main types.
1. Single-Chamber Pacemaker
- It contains a single lead, i.e. an electrode, and is usually placed in the right ventricle.
- It is used to stimulate one chamber of the heart, most often the right ventricle.
- Suitable for mild cases of bradycardia, or when the problem is limited to one chamber.
2. Dual-Chamber Pacemaker
- It contains two wires, one in the right atrium and the other in the right ventricle.
- It regulates the timing between atrial and ventricular contraction to ensure that the heart functions in synchrony.
- It is used in cases of heart block, or when a better balance between the atrium and ventricle is needed.
3. Biventricular pacemaker
- Also called Cardiac Resynchronization Therapy (CRT).
- It contains three leads, one in the right atrium, and two in the right and left ventricles.
- It is used to treat heart failure when the ventricles do not work in sync, improving the efficiency of pumping blood.
4. Leadless Pacemaker
- A very small, capsule-sized device that is implanted directly into the right ventricle without the need for wires.
- It is used through a catheter, which reduces the risk of infection and speeds up recovery.
- Suitable for certain cases that require right ventricular stimulation only.
5. Implantable Cardioverter Defibrillator - ICD
- It is not just a pacemaker, but combines pacemaker and defibrillation functions.
- It monitors the heart's rhythm and then delivers an electric shock to correct serious disorders, such as ventricular fibrillation or ventricular tachycardia.
- It is used for patients who have suffered sudden cardiac arrest.
6. External pacemaker
- A temporary device worn outside the body, such as a shirt with electrodes.
- It is used to protect patients from sudden heart attacks, or as a temporary solution before a permanent device is implanted.
- It monitors your heart rate and delivers electric shocks when needed.
Since we realize that choosing the appropriate device depends on the patient's condition and is determined by the cardiologist;
How long does the process of installing a pacemaker take?
The process of inserting a pacemaker takes about an hour, and most people can leave the hospital on the day of surgery or the day after surgery. It is a very safe procedure and rarely poses health risks.
Price of a pacemaker؟
It is not possible to determine a uniform cost for surgery Installing a heart rate monitorThe financial cost varies according to the country in which the operation is performed, and according to the type and quality of the device as well.
The average price of installing a pacemaker in America is estimated at about $4,000, equivalent to 15,000 Saudi riyals. As we mentioned previously, the price may increase or decrease according to the level of medical care in the hospital and the experience of the doctors supervising the surgery.
Frequently asked questions
Is installing a pacemaker dangerous?
No, as the procedure is relatively safe and is performed under local anesthesia, and complications are rare, including infection, bleeding, or movement of the electrodes, so the specialist doctor evaluates the case to reduce any risk.
What is the success rate of pacemaker surgery?
The success rate is very high, reaching more than 95%. It also improves the quality of life and reduces the appearance of symptoms such as dizziness or fainting resulting from an irregular heartbeat.
Is it possible to do without a pacemaker?
Yes, but in some mild or temporary cases where the device may not be necessary, while in chronic or life-threatening cases it cannot be dispensed with, but rather it is necessary to use it to maintain a stable heartbeat.
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