What Is Angioplasty?

An Angioplasty is a minimally invasive surgical, endovascular procedure used to widen obstructed or narrowed blood vessels (arteries and veins) around the heart to restore the natural flow of blood. In pathological terms, angioplasty is called percutaneous coronary intervention or PCI.

Angioplasty definition: By simple definition, the term 'angio' means anything related to blood vessels, whereas 'plasty', in medical terms, refers to the moulding or grafting of any body part which relates to the heart arteries.

Angioplasty can help relieve symptoms of blocked and clogged arteries. It is often performed immediately after a heart attack. Coronary angioplasty uses a small balloon catheter to open up the clogged heart arteries, improving blood flow to the heart. Sometimes, this process is combined with placing a metal stent in the artery to help keep the coronary artery wall open.

Types Of Angioplasty

There are several types of procedures for angioplasty that doctors can choose from depending on the kind of condition that the patient is suffering from. These procedures include:

1. Angioplasty balloon procedure

Doctors insert a small catheter with a balloon into the heart arteries for this procedure. The deflated balloon is fixed at the tip of the catheter and placed close to the plaque or blockage in the blood vessel. The doctors then inflate the balloon to gradually open the obstruction and boost blood flow into the heart. This balloon surgery for the heart is performed in rare cases when the doctors cannot use the stenting procedure.

2. Stent placement in the heart

This cardiac stent placement procedure involves using a stent or a small tube made out of wire mesh. It acts as a platform to support the insides of the coronary artery. Using a deflated balloon catheter, in this case, a stent balloon, the doctors utilise a guidewire to carefully place the stent in the blocked part of your artery. The balloon is inflated when in position, and the angioplasty stents expand to hold up the artery walls. Over time, the artery heals around the stent.

A stent used in angioplasty is usually made of metal and placed permanently in the arteries. Still, it can be designed with materials that the body absorbs. Some stents used in angioplasty contain medicine that helps to reduce the risk of the artery getting blocked again.

3. Rotablation procedure

In this angioplasty process, a special catheter with an acorn-shaped, diamond-coated tip is guided near the plaque in the heart. The tip then rotates rapidly to disintegrate the blockage or plaque into microscopic particles, which are then absorbed into the bloodstream.

This process is repeated as many times as needed to clear the blood passage of obstacles. Rotablation is not a standard procedure, as angiography stents and heart balloon procedures yield better results and are more accessible for the doctor to perform.

4. Atherectomy of the artery

A complicated procedure of balloon therapy for heart arteries entails using a hollow cylinder at the tip of the catheter in which one side has an open window and the other has a deflated balloon. When placed near the narrowed artery, the balloon is inflated, and the window is pushed towards the blockages or plaques in the artery. A blade present inside the cylinder rotates, hence cutting through and shaving off any plaque that protrudes inside the hollow tube. The shavings get stored inside the chamber and are removed from the body. Just like Rotablation, this procedure is rarely performed.

5. Cutting Balloon Angioplasty

Cutting balloon angioplasty surgery involves using a special balloon catheter fitted with a deflated balloon and small blades. When situated near the plaque, the balloon's inflation activates the blades, which distort and cut through the plaque in the heart artery. Meanwhile, the now-inflated balloon pushes the plaque to the artery wall.

Procedure - How Is Angioplasty Done

What is angioplasty surgery?

A trained cardiologist carries out An angioplasty operation in a special cardiac catheterisation laboratory. The balloon catheter insertion is generally done through the groin, arm or wrist. The patient is often not anaesthetised during the surgery. They are provided with a sedative to help them relax. Patients can usually be awake during the procedure, depending on how deeply they have been sedated.

How to prepare for angioplasty surgery

Besides regular medical history checkups, doctors perform tests to prepare for angioplasty. These tests include:

Chest X-Ray
Electrocardiogram
Blood tests

Doctors also advise patients to undergo a specific X-ray imaging test before the procedure. This test is called the coronary angiogram. It is a medical imaging technique doctors employ to see the inside of any blood vessel in detail. These images provide the doctors with the information they need to decide the course of the treatment. Through coronary angiogram, doctors can locate the area where the artery has narrowed and by how much. The test also offers information about whether the artery has a blockage or the walls have undergone stenosis.

As the treatment after angiogram is about to start, these are some steps that the patient should follow:

The doctor may advise the patient to stop or pause the intake of certain medications like aspirin, non-steroidal anti-inflammatory drugs (NSAIDs) or blood thinners
It is required for the procedure to stop eating or drinking six to eight hours before the surgery is about to start
Some prescribed medications must be taken on the morning of the procedure. Patients should ensure to drink only small sips of water for this

What happens during the angioplasty procedure?

The patient is administered with fluids, medications and blood-thinning substances or anticoagulants through an IV catheter
Blood pressure, heart rate and amount of oxygen in the body is also monitored throughout the procedure
Local anaesthesia is performed in the area through which a small and thin guide wire is inserted. A small incision is made in this area
The cardiologist uses the abilities of a live X-ray, which guides the doctor to place the catheter tip at the narrowed area of the artery
This cag procedure then involves the insertion of a contrast dye through the catheter that produces X-ray images of the insides of the artery. It allows the doctor to locate the plaque and identify the blockage. These images are called angiograms.
After the specific angiogram is obtained, the doctor inflates the balloon located at the tip with or without the stent, which pushes back on the plaque, hence widening the blood vessel and restoring normal blood flow to the heart.
The balloon is then deflated, and the catheter is removed.

The time taken for angiography and the entire angioplasty procedure is often 1-3 hours. The variation depends on the number of blockages and the complexity of the artery condition.

Coronary angioplasty and Stenting

Most people who require this procedure often have to use stents for angioplasty. The stent in angioplasty generally looks like a thin coil of wire mesh that is used to hold up the artery's walls after the balloon catheter pushes back and removes the plaque that was narrowing down the walls. The stent is placed permanently, allowing the artery to heal around it over some time and preventing any re-narrowing attempts of the artery wall.

What happens during the procedure of angioplasty with a stent?

The stent for angioplasty is located at the tip of the inserted catheter and placed in a collapsed structure around the balloon.
When the catheter reaches the narrowed walls of the artery during heart angioplasty, and the balloon is inflated, the stent springs forward and locks into the artery's walls.
The stent expands along with the expansion of the artery walls and helps keep the walls in place.
X-ray images or angiograms are consistently taken to keep a note of the quality of blood flow through the passage

In some cases, more than one stent is used. Most of the stents used during the procedure are often coated with medicines. These medications are released into the artery and help prevent further plaque buildup and re-narrowing of the artery's walls.

What happens after the angioplasty procedure?

When the angioplasty surgery is performed in non-emergency conditions, the patient is kept overnight at the hospital, with blood and heart conditions monitored and assessed continuously. In most cases, patients can choose to go back to work one week after the surgery.

Patients are advised to drink plenty of fluids and avoid strenuous activity for at least a day or two after the operation.

Is Angioplasty Right For You

Specific symptoms are seen in patients advised to undergo the angioplasty procedure. These symptoms of clogged arteries may involve the following:

Acute chest pain or angina
Shortness of breath or general difficulty in breathing
Heart palpitations or heart flutter
Extreme fatigue and weakness
Inability to do heavy physical activities
Nausea and tendencies of vomiting
Sweating

Doctors often perform angioplasty in the event of a sudden heart attack. Having this procedure done within the first few hours of a heart attack can reduce the risk of complications like heart failure that can arise later. This is because angioplasty takes only 1-3 hours to complete, and it is by far the safest and most efficient way to get the blood flowing back to the heart in hours.

Coronary angiography or cag test removes or clears fatty buildups of plaques in the heart's blood vessels. The plaques are generally made up of cholesterol, fat, and calcium found in the blood. These affected blood vessels are a result of a condition called atherosclerosis. Cag cardiology - angioplasty is required if the following conditions are visible in the patients:

Properly administering medicines and doctor-recommended lifestyle changes have not improved heart health.
Patients suffering from extensive and regular chest pain or angina
Incidents of heart attack

Angioplasty treatment is not for everyone. In cases of double vessel disease, the two blood vessels simultaneously face narrowing or stenting issues. For such a condition, coronary artery bypass surgery is recommended, which is a much more invasive surgical procedure.

Risks Of Angioplasty

Cardiac angioplasty is a minimally invasive procedure, and it is way less risky than coronary artery bypass surgery. Even then, it has post-angioplasty risks. These include -

1. Re-narrowing of the heart arteries:

During the angioplasty recovery period, there is a slight chance of the heart artery walls narrowing again if drug-coated stents were placed during the procedure. According to estimates, drug-eluting stents can reduce the chance of re-narrowing the artery to 5 percent only. For procedures that use a bare-metal stent, the chances of re-narrowing the artery during the angioplasty recovery time can range from 10-20 percent.

2. Blood clot formation:

In the heart stent recovery period, blood clots can form within the stents placed inside the artery. These clots can lead to a sudden heart attack due to artery collapse. To prevent these, adequately prescribed medications should be taken. As a part of restrictions after stent placement, patients should never skip or discontinue these medications to avoid the event of a heart attack.

Doctors provide particular medicines, such as angioplasty, to reduce any event of blood clot formation near the stent placed inside the coronary arteries. Compositions of medicines administered during the heart stent recovery period are commonly the following:

Aspirin
Clopidogrel
Ticagrelor
Prasugrel
Bleeding

The area where the catheter was inserted into the artery may bleed during the rest period after angioplasty. Simple bruises can occur, but in cases of profuse bleeding, blood transfusion or surgical procedures might be needed.

The angioplasty procedure also poses some risks, even though they are rare. These include:

Coronary artery damage: The coronary artery may be torn or disrupted during the procedure. This condition requires immediate bypass surgery.
Kidney issues: The contrast dye used during the angioplasty stent placement can cause kidney troubles in the patient. It occurs especially in those who are already suffering from kidney problems.
Stroke: A stroke may occur if the artery plaques break loose when the catheter is threaded through the blood vessels. Blood clots can also form in the catheter, which may reach the brain through the blood vessels. It is a rare complication, and blood thinners or anticoagulants are used to reduce the risk of the occurrence of a stroke.
Abnormal heart rhythms: During angioplasty surgery, the heart may beat too quickly or slowly. It is often a short-lived problem, but medicines and temporary pacemakers can sometimes be needed to ease the heartbeat.

Recovery After Angioplasty

After angioplasty and stenting, the heart stent recovery time is almost 12-24 hours after the catheter is removed. Patients can return to everyday life within a few days or a week after the procedure. Coronary artery disease status post-PCI is that chest pain decreases significantly, and patients regain the ability to exercise. It occurs because the healthy blood flow into the heart has been restored, and the body can function normally and with more energy.

After the angioplasty procedure is over, the patients can expect the occurrence of some common symptoms at home. These include:
Bruises or discolouration in the area where the catheter was inserted
Excessive fatigue and lack of energy
When should patients call the doctor during the recovery period?
Extensive chest pains that the patients used to feel before the surgery
If the puncture wound at the area where the incision was made swells up and develops a lump. It can also become sore and may start leaking blood
Incidences of fever

Outlook And Prognosis

Care after the angioplasty procedure is needed to ensure a healthy life for the patient. The period of rest after angioplasty requires specific lifestyle changes. These include:

Quitting smoking
Lowering the blood cholesterol levels by eating a healthy, balanced diet
Eating healthy food that contains low saturated fat levels
Taking proper care and controlling other related disorders such as diabetes and other heart problems
Getting regular exercise and reducing periods of inactivity
Taking medications as prescribed by the doctor

Diet after angioplasty

Certain precautions related to the diet of the patients should be taken after angioplasty. Patients should avoid consuming sugary food after angioplasty and restrict their salt intake. This helps to lower blood pressure and boost fluid retention. A healthy diet consisting of proteins and whole grains is advised. Medicine after angioplasty - To lower the risks of further cardiac complications, patients are advised to take medicinal precautions during the aftercare period. These medicines include:

Antiplatelets - Such medicines help to reduce the risk of blood clot formation, which may, in turn, lead to heart attack, stroke or other complicated heart disorders

Lipid-lowering medications or statins - During the post-angioplasty care period, statins help control the blood cholesterol level. It helps to mitigate the risks of blood vessel diseases and heart attacks

Medicines for blood pressure control - ACE inhibitors and beta-blockers are administered in the after-angioplasty care period to lower the blood pressure and prevent angina or heart attacks.