What Happens When the Electrical Activity of Your Heart Changes?

The heart's electrical conduction system plays a very important role in cardiovascular functioning. Also known as the atrioventricular (AV) conduction system, it regulates and controls the timing of the heartbeat.

How does the heart's electrical conduction system work?

There is a collection of electrical cells in the upper right atrium of the heart known as the sinoatrial (SA) node which acts as a natural pacemaker and generates electrical signals. These signals travel through specialized electrical pathways and stimulate the muscular walls of the heart to contract in a rhythmic manner. This gives rise to the heartbeat that pulses at a specific frequency every minute.

What is the effect of fluctuations in electrical activity on the heart?

The standard heart rate in human being ranges from 60 to 100 beats per minute. It slows down when a person sleeps and speeds up when one experiences physical or emotional heightening. These fluctuations are triggered by the brain or other systems of the body and signal the SA node to generate charges more rapidly or slowly. This leads to spikes and drops in the heart rate, depending on the nature of the situation.

What happens when there is dysfunction in the heart's electrical activity?

When the heart's electrical conduction system does not function properly, it leads to the occurrence of a condition known as arrhythmia or abnormal heart rhythm. This happens when electrical impulses are generated in an irregular manner and causes tachycardia (rapid heartbeats) or bradycardia (slow heartbeats) which takes place in jarring infrequent tempos.

What causes fluctuations in the heart's electrical activity?

There are various kinds of triggers that cause the heart rate to fluctuate. The exact nature of fluctuation also depends on the type of trigger. A few everyday examples of these causes are as follows:
- Exercise and strenuous physical activity increases electrical activity as the heart is required to beat faster so as to increase the supply of blood and oxygen to the muscles.
- Sleep and rest reduce heart rate as the body is not needed to exert itself.
- Release of adrenaline into the bloodstream causes the heart rate to spike up.



What Happens When the Electrical Activity of Your Heart Changes?

Heart Care Tips For a Heart Patient

A heart patient has to always live with caution. This World Heart Day, let us understand what it takes to keep our heart in good health. In fact, by following certain rules, one can lead a smooth life despite being a heart patient.
The major risk factors of heart diseases are smoking, high blood pressure, diabetes, physical inactivity, obesity, and high cholesterol. In addition to these, there are factors which add to the heart condition. They are stress, alcohol, sleep apnea and C - reactive protein.

Food and exercise play a major role in the well-being of a heart patient. It is important to engage in exercises as prescribed by your heart specialist. Follow these dos and don’ts with respect to food.

Say YES To:

1. Poultry and fish for the requirement Omega 3 and Protein
2. Raw nuts, flax seeds, avocados, olive oil, fish oils etc which make up the body's need of healthy fats.
3. Fruits and vegetables for the body's nutrient needs.
4. Whole grains and legumes which provide energy and fiber to the body.
5. Protein and calcium which come from unsweetened yoghurt, egg whites, low-fat/non-fat cheese and skimmed or double toned milk.

Say NO To:

1. Fried foods, cakes and pastries, since they have trans-fats or other harmful fats.
2. Foods high in sodium and sugar, especially packaged goods.
3. Rice, pasta, white breads, sugary foods.
4. Sausage, bacon and red meat.
5. Full cream milk, whole milk cheese and sweetened yoghurt.

If you would like to consult with me privately, please click on 'Consult'.

 Heart Care In Your Hands: World Heart Day Special Tips

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?

Our heart is one of the most important organs that must be kept healthy and fit so that we can lead a good lifestyle, however, unfortunately many people still suffer from heart problems. And, one such heart problem is Cardiomyopathy.

What is Cardiomyopathy?

Cardiomyopathy is a disease of the heart muscles that makes it very difficult for the heart muscles to pump blood to the rest of the body. Since the muscles are unable to pump blood effectively, it can lead to heart failure. It is a very serious condition and may require extensive treatment to fully recover from the disorder. 

Different types of Cardiomyopathy

Now we will be discussing about the different types of Cardiomyopathy that can affect an individual.

Hypertrophic Cardiomyopathy - In this case, the heart muscles becomes abnormally thickened, particularly affecting the muscle of your heart's main pumping chamber (left ventricle). The thickened heart muscle can make it harder for the heart to work properly. Most affected people have a family history of the disease.
Dilated Cardiomyopathy - In this case, the muscles enlarge and become weak, therefore they cannot pump the blood. These weak muscles over a period of time become absolutely ineffective and can cause heart failure.
Restrictive Cardiomyopathy - In this type, the heart muscle becomes rigid and less elastic, so it is unable to relax and can't expand and fill with blood between heartbeats.Which eventually does not allow the blood to flow properly.
Arrhythmogenic Right Ventricular Dysplasia - In this rare type of cardiomyopathy, the muscle in the lower right heart chamber (right ventricle) is replaced by scar tissue, which can lead to heart rhythm problems. It's often caused by genetic mutations. This condition can cause a sudden cardiac arrest or heart failure as well.
Symptoms 

Patient may be asymptomatic in the early stages of cardiomyopathy. But as the condition advances, signs and symptoms usually appear, including:

Breathlessness with exertion or even at rest
Swelling of the legs, ankles and feet
Bloating of the abdomen due to fluid buildup
Cough while lying down
Fatigue
Heartbeats that feel rapid, pounding or fluttering
Chest discomfort or pressuretreated
Dizziness, lightheadedness and fainting
Signs and symptoms tend to get worse unless treated.

Complications 

Cardiomyopathy can lead to other heart conditions, including:

Heart failure. Untreated, heart failure can be life-threatening.
Blood clots. Blood clots might form in your heart and may enter your bloodstream, then they can block the blood flow to other organs, including your heart and brain.
Valve problems. The heart valves might not close properly. This can lead to a backward flow of blood.
Cardiac arrest and sudden death.Cardiomyopathy can lead to abnormal heart rhythms which can result in fainting or, in some cases, sudden death.
Treatment 

It can include medications, surgically implanted devices or, in severe cases, a heart transplant, depends on which type of cardiomyopathy you have and how serious it is.

Prevention

You can help reduce your chance of cardiomyopathy and other types of heart disease by living a heart-healthy lifestyle and making lifestyle choices such as:

Avoiding the use of alcohol or cocaine
Controlling high blood pressure, high cholesterol and diabetes
Eating a healthy diet
Getting regular exercise
Getting enough sleep
Reducing your stress
So here are some of the most common types of Cardiomyopathy. These types can affect people of any age group if they lead an unhealthy lifestyle. Cardiomyopathy is a very serious condition and any person  suffering from it should be diagnosed early and given medical treatment as soon as possible.

Patient With Shortness Of Breath - Types Of Cardiomyopathy And Management!

Coronary Artery Disease - Symptoms and Causes

Coronary artery disease is the disease in which the major blood vessels (coronary arteries) that supply blood, nutrients and oxygen to your heart get damaged or disease stricken. It is mostly caused due to the coronary artery getting plagued or inflamed. The consequent reduction in blood flow to the heart causes the various symptoms of coronary artery disease like angina (chest pain), short breath etc.

Symptoms:

Here is a list of a few symptoms that help in identification of the coronary artery disease.

1. Angina

Pressure or tightness may be felt in or near the area of the chest that results in pain. It is mostly felt in the middle or left side of the chest.

2. Shortness of breath

Another symptom of coronary artery disease is short breath, fatigue and a feeling of exertion.

3. Heart attack

Complete blockage of the coronary artery results in a heart attack that is a prominent symptom of coronary artery disease. A person may feel heavy pressure in the chest, pain in the shoulder or arm, sweating etc. prior to getting a heart attack.

Causes:

Coronary artery disease occurs when damage or injury is done to the inner layer of the coronary artery. This damage causes plaque, which are deposits made of fat, cholesterol and other cellular waste materials to accumulate near the damaged area of the artery. This process is known as atherosclerosis.

The various causes that result in coronary artery damage are listed below.

- Smoking
- High blood pressure
- Diabetes
- High cholesterol
- Obesity
- High stress
- Physical inactivity

Knowing Coronary Artery Disease - Symptoms and Causes

For long, there have been campaigns and discussions about the harmful effects and diseases associated with alcohol consumption. In most cases, it is not the alcohol, but the quantity consumed that affects a person. Limited consumption of alcohol can, in fact, work to your advantage. Alcohol, when consumed in moderation, helps to avert, check or improve many medical conditions and health ailments.

Deal with common cold effectively: According to research, the antioxidants present in wine helps to fight common cold better. Limited intake of alcohol, red wine to be precise (~1-2 glasses per day), can, thus, help to reduce the instances of common cold significantly.
Weight loss made easy: Studies conducted by the Oregon State University suggest that certain varieties red wine (the Red Muscadine Wine) can play a pivotal role in weight reduction. The Red Muscadine, a variety of wine grapes used to make red wine contains ellagic acid. It is this ellagic acid that helps to cease or slow down the growth and development of the fat cells. Red wine also helps to manage fatty liver effectively.
Keep cardiovascular diseases at bay: The high-density lipoprotein (HDL), also known as the Good Cholesterol is indeed good for the body. It acts as a shield, keeping the heart hale and hearty. Moderate alcohol consumption helps to elevate the level of HDL. One of the main reasons attributing to heart attacks are the small blood clots that block the arteries of the brain, heart, and neck. Alcohol (limited intake) has been able to put a check in the formation of such blood clots.
Reduced instances of cognitive impairment: Reports suggest that people who consume alcohol within limits are less likely to develop dementia and Alzheimer's disease. Moderate consumption tends to make the brain cells fit and more active, thus, enabling the cells to deal with stress and other related factors.
A little wine for a better libido: Limited consumption of wine is good for a better sexual life. Research indicate that the antioxidants present in wine act as a catalyst, resulting in an improved libido (lowers the incidences of erectile dysfunction in men). A little wine can work wonders for women as well (increasing their sexual desires and feelings).
Enjoy a diabetes-free life: Type 2 Diabetes and the associated ailments and complications can make life miserable. However, people who consume a small quantity of alcohol (preferably 1-2 glasses per day) are at a lower risk of developing diabetes (Type 2). A path-breaking finding indeed!
People with moderate alcohol consumption are also at a lower risk of developing gallstones. The high silicone content in beer helps to strengthen the bones, but only when consumed within limits. Beer is also rich in calcium, magnesium, and vitamins (thiamine, riboflavin).

Alcohol In Controlled Quantity - Can It Be Good For You?

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