If the blood flow between left ventricle and aorta is obstructed, it is known as Aortic Stenosis.
Aortic stenosis can occur in newborn, infants, children and adolescents. It is more common among boys than in girls.
Mild cases of this disorder do not need treatment. However, if a child has a severe case of aortic stenosis, then it requires treatment.

Aortic stenosis: Causes-

Blockage in the valve, mainly in the form of bicuspid valve stenosis (Aortic valve stenosis)
Muscular/fibrinous obstruction beneath the aortic valve (Subaortic stenosis)
Narrowing above the aortic valve in aorta itself (Supravalvular aortic stenosis)
Aortic valves regulate blood flow to the body parts. When aortic valve opens, it allows blood to go forward then it closed down so that blood will not come back to left ventricle.
However, if there is a problem with the aortic valve, it cannot open entirely and that restricts the passage of blood. The heart has to work extra hard to ensure that the entire volume of blood flow through the faulty valve.

Sometimes babies are born with deformed aortic valve in the form of bicuspid aortic valve that is prone for obstruction as compared to normal trileaflet aortic valve.

Aortic Stenosis: Symptoms-

Symptoms due to aortic stenos is depends on age of the child and its severity.
If occurs in newborn babies, it is generally severe in intensity and babies are generally in shock like state due to low cardiac output.
Infants are generally tired easily during feeding.
Children show signs of easy fatigue, chest pain, loss of consciousness and in late stages with shortness of breath.
Diagnosis of Aortic Stenosis-

Pre-natal testing like a fetal echocardiogram can reveal aortic stenosis if moderate to severe in intensity. That is why as soon as the baby is born, treatment is initiated.
Even if the child was not born with a problematic valve, this condition can arise a few years later.
For diagnosing this disease pediatric echocardiogram by pediatric cardiologist needs to be done from the chest of the child
Treatment of Aortic Stenosis-

If aortic stenosis is mild to moderate in intensity then we need to do follow-up of the child at regular intervals.
However, in severe aortic stenosis, treatment needs to be done
In valvular aortic stenosis, treatment of choice is by doing ballooning of aortic valve (Balloon aortic valvuloplasty, BAV) in any age group.

Balloon Aortic Valvuloplasty - This is not open-heart surgery. It is done in cardiac cath lab under fluoroscopic guidance by using vessels in thigh. We cross the valve with wire and catheters and we inflate a balloon across the stenosed aortic valve.

Open heart surgery: In subvalvular and supravalvular aortic stenosis, treatment is by open heart surgery.

Valve Replacement - An artificial valve or a donor valve is surgically attached at aortic valve location when valve is not amenable for ballooning. It is generally done in adolescent or adult patients.
Parents need to be alert and attentive to any physical discomfort that their child is suffering because that could be a symptom of aortic stenosis. The right treatment at the right time is necessary whenever required.

Aortic Stenosis - All You Must Know About It!

The body receives its source of energy and nutrition through the blood, which is the transport medium. The blood runs through a highly complex network of blood vessels, with the aorta being the largest one. It originates in the heart, the left ventricle precisely and supplies oxygenated blood to all parts of the body. Coarctation is a condition where there is a narrowing of the aorta. The heart, therefore, has to exert extra pressure to push out blood so that blood supply to the target organs is not affected.

The exact cause of aortic coarctation is not known, though it often develops at birth and so is known as a congenital disorder. Depending on the severity of the narrowing, symptoms develop at various times in life. While some infants demonstrate symptoms, some may not show any symptoms well into adulthood. Infants with severe narrowing may manifest the below symptoms quite early in life.

Difficulty in breathing may gasp
Difficulty in feeding
Be extremely irritable
Profuse sweating
Pale skin
When these symptoms are not noticed and treated in time, the child may have heart failure or even die. If the symptoms do not manifest early in life, the infant can grow into childhood quite normally. Symptoms may then manifest which would be different, as below.

Increased blood pressure
Headaches (frequent)
Weakness in the muscles
Nosebleeds
Chest pain
Frequent fainting spells
These are generic symptoms and it is difficult to suspect coarctation of the aorta. Therefore, further imaging would be required to rule out coarctation of the aorta. There are some risk factors, most related to the heart, which puts one at increased risk of developing aortic coarctation.

Bicuspid aortic valve
Aortic valve stenosis and/or regurgitation
Mitral valve stenosis and/or regurgitation
Patent ductus arteriosus
Treatment: Diagnosis is the first step in treating coarctation of the aorta. This would include a series of imaging tests including an echocardiogram, electrocardiogram, chest x-ray, CT scan, and MRI.
Surgery is often the most definitive mode of treatment, and the approach chosen depends on the severity and stage of identification. The most common approach is to open up the narrowed portion and keep it from collapsing again, so that blood flow is restored. This is known as a balloon angioplasty and stenting. Some of the other procedures used include:

Resection with end-to-end anastomosis
Bypass graft repair
Subclavian flap aortoplasty
Patch aortoplasty
In all affected individuals, after surgery, medications are prescribed to maintain blood pressure levels, which is often increased. In addition, lifestyle changes including exercise and healthy eating habits have to be developed.

Coarctation of the Aorta - Symptoms and Treatment

Coronary artery disease is characterized by accumulation of plaque in the coronary artery that chokes blood supply to the heart. This plaque buildup usually starts with cholesterol accumulation and gradually other particles such as calcium and lipoproteins get deposited as well. Over time, the plaque accumulates, making the blood vessels narrow and choking the supply of blood. In some cases, if the plaque ruptures, it may lead to formation of blood clots resulting in stroke.

The symptoms of coronary artery disease are:

1. Breathing difficulties: This disorder may lead to shortness of breath as the blood pumping mechanism of the heart is impaired; this usually results in fatigue and exertion. It is advised to avoid advanced cardio exercises such as the high intensity interval training.

2. Chest pain: Stress related activities may cause intense pressure or tightness in your chest, resulting in pain in the middle or left portion of your chest. If you discontinue the activity, the pain would usually subside. In some cases, you may feel the pain in the arm and the neck.

3. Heart attack: If the level of plaque accumulation is excessive, then it may result in a heart attack. It is characterized by breathing difficulties, pain, tightness in the chest and sweating. You may also experience pain in the neck and the jaw.

The causes of coronary artery disease are:
1. Smoking and alcohol consumption
2. Leading a sedentary lifestyle ups the risk of coronary artery disease
3. Hypertension
4. High cholesterol levels in the body
5. Blood sugar problems

Treatment
1. Get your blood pressure under control: If you suffer from high blood pressure, then it is recommended to get it under control to prevent coronary artery disease.
2. Quit smoking: If you are a habitual smoker, then it is time to nip the habit in the bud. Smoking is known to constrict blood vessels as it is a vasoconstrictor.
3. Eat healthy: Eat a well balanced diet consisting of vegetables and fruits so that your body receives the essential nutrients to function well.
4. Beat stress: You need to control your stress levels through exercise or meditation. Take time off work and do activities that make you happy.

Coronary Artery Disease: Causes and Treatment

Coronary artery disease or CAD is the name given to the heart condition in which the major blood vessels that supply your heart with blood, oxygen and nutrients, also called coronary arteries, get blocked, damaged or diseased.

Blockages usually happen when cholesterol-containing deposits called plaque deposit in your arteries. Plaque narrows the lumen of your coronary artery which means your heart gets lesser and lesser oxygen and nutrients to function properly.
Inflammation is also to blame for coronary artery disease.
Common symptoms of CAD include

Angina or pain in the chest
Shortness of breath
If the blockage is complete, you can get a heart attack.
Common Diagnostic tests
When you go to a heart specialist, she will ask questions about your medical history and follow it up with a physical exam and order routine blood and diagnostic tests to confirm CAD like:

Electrocardiogram (ECG): An ECG records electrical signals as they travel through your heart revealing evidence of a previous heart attack or one that s happening. Holter monitoring is a type of ECG where you wear a portable monitor for 24 hours as you go about your normal daily activities. Abnormalities in the results suggest reduced blood flow to the heart signaling CAD.
Echocardiogram: This test uses sound waves to produce images of your heart. It helps your doctor determine whether all parts of your heart wall are contributing to your heart's pumping activity. If certain parts are moving weakly it can mean damage to muscle due to a heart attack or because of receiving too little oxygen- again signaling CAD.
Exercise Stress test: This test is done by making you do exercises like walking on a treadmill or riding a stationary bike during an ECG. Sometimes, medication to stimulate your heart may be used instead of exercise.
This again detects areas in your heart that receive less blood flow.

Cardiac catheterization or angiogram. A special dye is injected into your coronary arteries to observe blood flow through your heart in a test known as an angiogram.
The dye is sometimes also injected into the arteries through a long, thin, flexible tube called catheter that is threaded through an artery in your leg to the arteries in your heart. This procedure is called cardiac catheterization. This test is very good in diagnosing CAD as the dye outlines narrow spots and blockages on the X-ray images of your heart.
Heart scans. Computerized tomography or CT can help your doctor actually see calcium deposits in your arteries that can be narrowing your arteries. If a substantial amount of calcium deposits are found, coronary artery disease could be the reason.
MRI scans are also done to diagnose CAD.

Common Tests For Coronary Artery Disease!

Angioplasty is the procedure of opening a coronary artery blockage with the help of wire balloon and stent. This procedure is done to open the blocked coronary arteries if they are causing symptoms or acute heart attacks.

HOW IT IS DONE?

The procedure is usually done in local anaesthesia. A wrist artery (radial) or a groin artery (femoral) is used to gain access to the coronary artery as is done in angiography. A hollow tube called a catheter is passed upto heart artery and through this, a guidewire is passed across the blockage and over this wire balloon is passed and blockage dilated.

After this balloon is removed and the metallic stent is passed over this wire. The stent is then inflated and it takes its shape of the hollow tube so that the flow in the coronary artery is restored.

WHAT ARE INDICATIONS OF ANGIOPLASTY AND STENTING:

An acute Heart attack is the most definite indication of angioplasty and stenting. At the time of the heart attack, there is an urgent need to restore the blood flow of block coronary artery which is usually not possible with medicines alone. Angioplasty is the most effective and definite way of opening the artery urgently in such situation.

SHOULD ALL BLOCKAGES BE OPENED UP BY ANGIOPLASTY AND STENTING?

NO, all blockages do not warrant this procedure. There is some amount of risk involved in the angioplasty procedure itself. When the risk of blockage is considered more than the risk of opening the artery then the procedure is indicated. Patients who are doing good on medicines may be followed up without angioplasty.

All About Angioplasty!

The coronary arteries supply the heart with oxygen-enriched blood and nutrients. If these arteries become damaged or diseased; they could cause Coronary artery disease or CAD. Plaque deposits on the walls of the arteries are the most common cause of this disease. This plaque is usually the result of high cholesterol levels. As the plaque builds up, the passage of blood flow is reduced. This reduces the amount of blood that reaches the heart. In cases of a complete blockage, CAD can even cause a heart attack. Because of its slow progression, this disease is often not diagnosed until it reaches a dangerous stage. However, it can be prevented and treated if diagnosed in time.

In the early stages of CAD, symptoms are not very noticeable. Symptoms become visible only when blood flow to the heart reduces and the heart has to pump harder than normal. The most common symptoms experienced include:

Chest Pain: This is also referred to as angina. It may feel like a tightening of the chest or pressure on the chest as though someone is pressing against it. This type of chest pain may be triggered by emotional or physical stress. It is usually relieved within a few minutes of stopping the activity. Women may experience this pain as a sharp, fleeting pain in the back, arm or neck.
Breathlessness: When the heart does not receive enough blood, it has to work harder to pump blood through the body. This may be translated to breathlessness of shortness of breath when performing any type of physical activity. It can also cause extreme fatigue.
Heart Attack: A heart attack is the most severe symptom of coronary artery disease. This is caused by the complete blockage of a coronary artery. A heart attack can occur without any symptoms or be preceded by slight symptoms. The signs of an impending heart attack include pain in the chest and shoulder, shortness of breath and extreme sweating. The chest pain may also travel to the lower jaw. These symptoms are more pronounced in men as compared to women. Women have a higher tendency of experiencing atypical signs such as extreme fatigue.
Other symptoms that might indicate coronary artery disease are dizziness, nausea and an irregular heartbeat. The good news is that this disease can be prevented. Staying physically active, maintaining a healthy weight, reducing stress and eating a low fat and low salt diet can help reduce the risk of CAD.

Coronary Artery Disease (CAD) - What Are The Symptoms?

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