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?

Cardiomyopathy includes diseases involving the heart muscle. These diseases have various causes, types, symptoms and modes of treatment.

The heart muscle gets enlarged, thick or rigid. In several cases, the heart muscle tissue is replaced with a scar tissue. As this condition worsens, the heart gets weaker and the ability to pump blood is disrupted, which can cause heart failure or irregular beating of the heart. The weakened state of the heart can lead to valvar diseases.

The different types of cardiomyopathy are:

 Hypertrophic cardiomyopathy-
This is a common form and affects people of all ages. Men and women are affected equally. This condition arises due to the enlargement and thickening of the heart muscle. The ventricles, the septum and the lower heart chamber usually thicken, which causes obstruction in pumping of blood by the heart. This disease also causes stiffness in the ventricles, and cellular changes in the tissue.
 Dilated cardiomyopathy-
This form of cardiomyopathy develops due to the enlargement and weakening of the ventricles. The issue arises from the left ventricle and develops over time. It may even affect the right ventricle. More effort is put in by the heart muscles for pumping blood and slowly the heart is unable to pump blood effectively. This condition may lead to heart failure, valve diseases or blood clots in the heart.
 Restrictive cardiomyopathy-
This disease occurs due to the stiffening of the ventricles, without thickening of the walls of the heart. The ventricles are not allowed to relax and do not receive a sufficient volume of blood supply. This condition causes heart failure and valvar problems over time.
 Arrhythmogenic right ventricular dysplasia-
This rare form of cardiomyopathy occurs when fat or fibrous tissues replace the muscle tissue of the right ventricle. This causes arrhythmias and disruption in the electrical signals of the heart. It generally affects teens and may cause cardiac arrest in athletes.
 Unclassified cardiomyopathy-
Some types of cardiomyopathy of this category include left ventricular non compaction where the ventricles develop trabeculations. Takotsubo cardiomyopathy is another disease where immense stress causes failure of the heart muscles.

Treatment-
Many cases of cardiomyopathy come and go away on their own. Treatment for other cases depends on the severity and symptoms. The major treatment methods are:
Lifestyle changes meant for a healthier heart.
Medication.
Nonsurgical methods.
Surgery and implants

Modes of surgery for treatment of cardiomyopathy include:
Septal myectomy
Heart transplant
Implant devices such as cardiac resynchronization therapy (crt) device, implantable cardioverter defibrillator (icd), left ventricular assist device and pacemakers are fitted into the heart for better performance.

Cardiomyopathy can be of many different types, each arising from different situations and conditions. The mode of treatment depends on the severity of the complication or on the basis of symptoms.

Types and Treatments of Cardiomyopathy

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 heart pumps pure blood to all parts of the body through a network of arteries. These are thicker in the beginning and become finer and thinner as they reach the various organs. These arteries are lined by a layer of epithelial tissues and as blood flows through them, the heavier cholesterol / fat molecules settle down along the walls. 


This attracts more and more fat molecules to settle down.  This is known as atherosclerosis (hardening of the arteries). Over a period of time, the vessels circumference reduces and the blood supply to the target organ reduces. This impacts proper functioning of these organs and when this happens to the major organs like the heart, kidney or the brain, conditions like stroke or thrombosis or heart attack can occur.


This condition, known as coronary artery disease, is becoming a major cause of deaths.  While that is the bad news, the good news is that it is largely lifestyle dependent, and if steps are taken, it can be prevented, and in the early stages, the damage completely reversed.


Preventive measures: 
1. Diet: A low-fat, high-fiber, heart-healthy diet consisting of Omega-3 fatty acids is recommended by doctors, especially to people who are prone to develop heart disease.  This also requires reduced salt, increased unsaturated fats, reduced triglycerides and reduced sugar.  Include loads of fresh fruits and vegetables, whole grains, nuts and seeds and fish oils. Include multivitamins or other supplements after checking with your doctor.


2. Exercise:  Regular exercise in any form increases the efficiency of the circulatory system, keeps the cholesterol levels in check and helps in blood pressure management.  Exercise in any form is advisable, based on individual preference. A moderate physical activity of 30 to 45 minutes per day is advisable.


3. Smoking: This is one of the major risk factors for smoking, and quitting or controlling smoking is one of the best methods to prevent coronary artery disease.


4. Alcohol consumption:  While moderate alcohol consumption is believed to be healthy for the heart, excessive alcohol consumption is a strict no-no.  Binge drinking especially is shown to cause heart attacks.


5. Weight management: Check with your doctor on what is ideal BMI for you and work out a plan to keep your weight under check.


6. Regular medications: If you are on blood pressure or diabetes medications, ensure you do not miss them.  Keep a constant check to ensure your readings are managed well. 


7. Watch out:  Ask your doctor if there are specific symptoms that you need to watch out and seek medical support if you see any of them.


Coronary disease is not treatable fully, but can be prevented and managed effectively to improve the overall quality of life.

Coronary Artery Disease - 7 Ways You Can Prevent it 

Beetroots are packed with nutrients and can be eaten raw, pickled or cooked. Beetroots can even be juiced. It has been used in a number of sweet and savoury recipes. When it comes to beetroots, the root as well as the leaf can be eaten. Here are a few great reasons why you should eat beetroot.

    It's good for the heart: Beetroots are rich in nitrates. This helps relax the arteries and reduces blood pressure. Being rich in fiber and antioxidants enables beetroots to prevent plaque formation in arteries. The antioxidants in beetroots also prevent bad cholesterol from being deposited on the artery walls. Thus it protects against heart attacks and strokes.
    It helps fight diseases: Beetroots are said to boost immunity and fight a number of diseases including cancer, Alzheimer's and liver disorders. Beetroot is rich in betanin that expels cancer triggering agents and prevents the development of tumours on both the skin and liver. It is also said to protect a person from breast cancer. It also helps detoxify the body.
    It helps build strong bones and teeth: Beetroots are rich in silica. This silica is a crucial component required for healthy bones and teeth. Along with silica, beetroots are also rich in magnesium, vitamin C and folate. Beetroots also help prevent osteoporosis.
    It helps control blood sugar: Beetroots are naturally sweet, but can help control blood sugar and help fight diabetes. Beetroots are also rich in soluble fibers that can help regulate blood sugar levels. Drinking beetroot juice thrice a week is the best way to use beetroots to stabilize glucose levels in the body.
    It aids in weight management: Beetroots have a very low calorific value and are rich in fiber. This makes it an effective tool in weight loss. It also helps rid the body of toxins and excess water.
    It slows the aging process: Beetroot adds a glow to your skin. It helps cleanse the blood of toxins and thus makes skin healthier. The anti oxidants in beetroot reduce free radicals and thus slow down the aging process. This pink vegetable also has anti septic and anti inflammatory properties that help heal skin.
    It makes hair healthier: Carotenoids in beetroot give hair a lustrous shine and help fight hair fall. Beetroots are also rich in protein, phosphorus and a number of other vitamin and minerals essential to healthy hair. It helps improve blood circulation in the scalp and helps remove dead skin and excessive oil from the scalp.

Beet Root: Chukandar - How and Why You Should Eat It?

Arrhythmia is a disorder which is characterized by improper and irregular heartbeats; be it too slow or too fast. This problem occurs when the electrical impulses that are used to regulate your heartbeat don t work in the correct manner. Your heart may beat irregularly, too slow or too fast.

Symptoms
Although this disorder does not yield many symptoms, a few noticeable symptoms of arrhythmia are slow heartbeat, or a racing heartbeat, chest pain, breathing difficulties and dizziness. Arrhythmia can lead to inefficient pumping by the heart, leading to bouts of fainting. A severe symptom of this disorder is ventricular fibrillation, wherein the ventricles tend to quiver instead of transporting blood. This symptom can cut off blood supply to the vital organs, which may lead to death.

Causes

Coronary artery disease: In this disease, arteries of the heart can get blocked, leading to irregular heart beat and impaired heart functioning.
A heart attack: An ongoing heart attack usually leads to irregular heartbeats.
High blood pressure: High blood pressure problems make you more vulnerable to this condition.
Impaired functioning of the thyroid glands: An overactive or underactive thyroid gland can lead to heart arrhythmia.
Excessive smoking and alcohol consumption: These habits can cause problems with the blood vessels in the body, thus increasing risks of this particular condition as well as other cardio-vascular diseases.
Stress: Too much stress can lead to high blood pressure; that is again linked to heart arrhythmia.
Treatment
Mild symptoms of arrhythmia do not require treatment. However, complications resulting from it warrant treatment. The various treatment options for this condition are:

Pacemaker: A pacemaker is a device that is used to regulate your heart rhythms. It is placed in the body by a surgical procedure and an insulated wire is put, connecting the heart to the pacemaker. In case of an irregular heartbeat, the pacemaker sends out impulses to correct the improper heartbeat.
Implantable cardioverter-defibrillator: This device is used to prevent a dangerous symptom of heart arrhythmia, a symptom wherein the ventricle quivers. It is similar to a pacemaker as it is also placed near the collarbone. In case it detects an abnormal rhythm, it sends out shocks to reset the heart rhythm.
Maze procedure: This is a surgical procedure wherein incisions are made on the upper heart tissue to create a scar tissue. Scar tissues act as insulators to prevent stray impulses.
Alternative therapies: Alternative procedures such as yoga and meditation can help remedy the disorder.

Is Your Heart Missing a Beat Regularly - Could it be Arrhythmia?

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