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?

Cholesterol is one of those terminologies that need a clear and fresh understanding, right from scratch. It is nothing but obvious and common for you to primarily know about the ill effects of cholesterol and what it does to your body; from increasing the risks of cardio-vascular diseases to adding to your waistline. However, it is time we all got a fresh perspective on what cholesterol is.

So, to start off, what is actually cholesterol?
It is waxy substance produced by the liver which plays an important role in the proper functioning of the cells, digestive process and synthesis of Vitamin D in the body. As cholesterol is a fat based substance that does not dissolve in blood, it is transported, throughout the body, by a protein called the  lipoprotein . The lipoproteins that carry cholesterol are of two types: Low-Density 

Lipoprotein (LDL) and High Density Lipoprotein (HDL)

Why is LDL  bad ?
LDL is known as  bad  cholesterol as it is responsible for plaque formation that reduces flexibility of the arteries and tends to clog them.

Why is HDL  good ?
HDL is known as the  good  cholesterol because it gets rid of excessive LDL from the arteries and transports them to the liver where they can be broken down. Too much of bad cholesterol in the body can lead to clogged arteries that may result in stroke or a heart attack. Now that you know that too much LDL cholesterol is bad for you, you need to keep it under control while raising the good cholesterol (HDL) levels. In order to do that, you need to make certain modifications in your lifestyle.

Some of them can be:

Eat foods that are good for the heart: Avoid eating saturated fats and trans-fats as they raise LDL levels in the body. Instead, choose foods that are rich in the heart healthy monounsaturated fats such as almonds and olive oil. Also, include foods that are rich in Omega-3 fatty acids such as fish oil; these fatty acids increase HDL levels in the blood.
Exercise regularly: Exercise not only helps you to lose calories but also increases the good cholesterol levels in the body. Aim for 20-30 minutes of cardiovascular exercises in the form of brisk walking, running or cycling to keep your heart muscles healthy.
Stop smoking: Smoking can cause the blood vessels to narrow down, thus increasing blood pressure, owing to the constriction of the blood vessels. Quit smoking right away and your ticker will thank you for it. Remember to limit alcohol consumption as well.
Maintain optimal weight levels: It s time to get rid of all the excess fat from the body, especially the visceral fat (abdominal fat). Obesity increases the risk of heart diseases and also has a negative effect on the cholesterol levels.

Cholesterol - Lifestyle Habits That Help Control it!

My child complains of Chest Pain. Should you be worried?

Chest pain is a common complaint among children. For a parent, it can be worrisome because there is a natural tendency to associate chest pain with the heart. The good news is, in more than 95% of cases, chest pain is non-cardiac in origin.

What signs will tell me that the pain may be related to the heart?

Chest pain that occurs in association with certain pointers needs a thorough evaluation. Some of the features that may suggest a heart-related condition include:

Associated breathing difficulty or dizziness
Chest pain that is brought on by exercise
When cardiac disorders run in the family or there have been sudden deaths at a young age in the family
A past medical condition like Kawasaki disease or connective tissue disorder
The following features suggest that a non-cardiac cause is likely:

If the pain follows direct trauma to the chest or is worsened on local pressure: the muscles or bones that form the chest wall are the likely origin of pain
Wheezing or fever and cough: a lung problem is likely
A burning pain beneath the breastbone, especially in relation to certain types of food: may be related to the digestive system
A stressful situation at school or home: a psychological cause of chest pain may be considered.
What can I expect at the doctor s visit?

If your child complains of chest pain, it is important to take him or her to the doctor. Your doctor will first take a detailed history and examine the child. ECG, a record of the electrical activity of the heart, gives an initial idea whether or not the pain may be related to the heart. Other tests that may be ordered include a chest XRay, a  heart-scan  (echocardiogram), a stress test, or further tests based on the findings on evaluation.

Chest Pain In Children - Should You Be Worried?

Neurosurgery mainly deals with treating of functional disorders that affect the nerves, brain and muscles through major or minor surgery. The field of neurosurgery makes use of advanced surgical procedures. The different techniques are used to treat brain tumors, trauma to the head, cerebral hemorrhages, spinal disc herniation, brain aneurysms and peripheral neuropathy.

Neurosurgery Treatment
The main aim of neurosurgery treatment in patients suffering from stoke is to prevent neurologic deterioration as well as the recurrence of stroke. The advancement in medical treatment has increased to a great extent, however the mortality and morbidity in stroke patients is very high. The second leading cause of death all over the world is stroke, and hence, through neurosurgery stroke can be managed. Each year in the U.S there are about 800,000 people who suffer from stroke which causes disability.

Symptoms of Stroke and its Effects
The main symptoms of stroke are not identified easily by people. However, the symptoms that are caused on delay of treatment include difficulty in speaking, weakness on one side of the body, drooping on one side of the face and difficulty in walking.

Stroke at times is life threatening and it is also referred to as brain attack and can occur at any time to an individual. It is caused when the flow of blood supply to the brain is cut off and oxygen is deprived to the brain cells. Brain dysfunction occurs due to the dead brain cells and hence some patients lose their memory and control over their muscle movement. The treatment of stroke in such cases includes a neurosurgery by a neurological specialist.

Types of Stroke
The abrupt interruption to the flow of blood that causes hindrance in the neurological function can be best treated if detected early and by accurate diagnosis by a neurosurgeon. There are 3 different types of stroke that can occur and these include Hemorrhagic stroke, Ischemic stroke and Transient ischemic attack. The Ischemic stroke mainly occurs when blood vessels that supply blood to the brain are blocked. It is a common form of stroke and its underlying cause is known as atherosclerosis. The main procedures that are used for treating ischemic stroke include tissue plasminogen activator and endovascular procedure.

In the tissue plasminogen activator procedure, the patient is given medicine intravenously. The blood flow to the affected area of the brain is improved when the blood clot dissolves through this method. The medication is given immediately after 3-4 hours on occurrence of the stroke symptoms. In the second procedure, a catheter is used, which is injected in the area of the obstructed blood vessel. The blood flow to the area is restored by the endovascular procedure. Even anticoagulants are given to thin the blood and prevent clogging.

Neurosurgery In Management Of Stroke!

Hypertension or increased blood pressure is one of the modern lifestyle diseases. The changing lifestyles including altered dietary habits and lack of physical activity are the main reasons for the high incidence of hypertension. With this, it brings a host of complications including other chronic diseases like diabetes, kidney failure, risks of stroke and heart attacks.

Alternative medicine proposes quite a number of remedies in addition to just increased physical activity. Read on to know more about how you can eat healthier and control your blood pressure.

Eat walnuts: As most books and media depict, heart disease is directly related to physical reaction towards stress. Regular eating of walnuts helps control this response, thereby controlling blood pressure. It is also a great source of antioxidants and fibre, which adds to its heart-healthy features.

Load up on minerals: Eating a diet rich in calcium, magnesium, and potassium is extremely beneficial for the heart. Sweet potatoes, bananas, dry fruits, dairy products, etc., have shown to reduce blood pressure extremely well in various experiments.

Avoid salt: While the natural sea salt is almost out of use, most of us have switched to the processed variety, which is devoid of all minerals. This is one of the major contributors for increased blood pressure. Studies have shown that reducing salt intake helps in a big way in controlling blood pressure. Most of us are also used to adding extra salt so the food tastes better. This should be avoided. With increased consumption of processed food items, everything from bread to cookies to cheese has salt, which also should be reduced, and if possible, avoided.

Have a colourful meal: Load up your plate with peppers, berries, dry fruits, and organic fruits and vegetables. Pomegranate juice is believed to control angiotensin, converting enzyme, which is responsible for controlling hypertension. They are also rich in antioxidants and help control blood pressure by reducing inflammation.

Know your cholesterol: While cholesterol is generally used with a negative connotation, it is not always true. There is good and bad cholesterol and the bad one should be avoided. Watch out for labels, and ensure you are eating less of the bad cholesterol. Good cholesterol is required for the production of hormones and proper functioning of the body.

Watch your medicines: While it is easy to just pop an ibuprofen when there is a headache or a back ache, it is advisable to watch out. These are best avoided in the long run, as they can induce hypertension and induce heart disease.

In addition, meditation, relaxation, green tea, dark chocolate, red wine, music, and quitting smoking are also shown to be helpful in controlling blood pressure.

Successful Tips To Control Blood Pressure

Your heart is the most important and vital organ of all and regulates the flow of heart to all parts of the body. Thus, the valves and the arteries which take the blood to your heart are also an important component in ensuring that the circulation is constant. Thus, any hindrance to this process will put a lot of pressure on your heart and lead to more serious problems in the long run. Coronary artery disease is one such problem and can seriously put the health of your heart at risk.

What is coronary heart disease?
Coronary arteries are very important blood vessels, which carry nutrients, blood and oxygen to your heart. If the level of bad cholesterol is high in your blood, it will start leaving deposits on the walls of the arteries which are commonly known as plaque. This plaque will start building up over time causing blockage of the arteries and disrupting proper blood flow. Excessive build up of the plaque may then rupture the lining of the plaque. This will then induce blood clotting and further prevent the normal flow of blood.

Symptoms
Primary symptoms may include

Shortness of breath: This may occur while you are exercising or performing activities which are mildly exerting.
Heart beats very hard and fast: Your heart may beat very hard and fast, especially when doing everyday activities such as climbing stairs or walking for a prolonged distance.
Angina or chest pain: You may experience pain in your chest as if someone was pressing against it with a lot of force. Angina is also triggered due to stressful activities or even emotional stress. It usually occurs on the left or the middle of the chest and may even be felt in the back, arms, and neck.
Heart attack: Heart attacks are the most common and the most serious complications of coronary heart disease. You would feel extreme pain, akin to crushing on your chest, shoulder, or arm. It may even be accompanied by jaw pain, and sweatiness.
Treatment
Non invasive forms of treatment are always preferable rather than invasive surgeries or procedures to treat coronary heart disease, especially where the risk of serious complications such as heart attack are still on the lower side. Some of the treatments used for coronary heart disease are as follows:

Making lifestyle changes: Quit smoking, reduce alcohol consumption along with consumption of regulated diet will automatically start cleaning plaque that has built up within the arteries. Losing weight also tends to help.
Medications: Special medications can take care of cases wherein the deposits are still lesser and the plaque buildup can be removed without the requirement of extensive surgery. Anti-cholesterol medications are one example of this.
Surgical procedures: These are usually employed when the blockage is severe and cannot be corrected by the conventional methods mentioned above. Some of the procedures are angioplasty, stent replacement, as well as coronary artery bypass surgery.

Coronary Artery Disease -  Know the Primary Signs!

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