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?

A heart attack does not always have obvious symptoms, such as pain in your chest, shortness of breath and cold sweats. In fact, a heart attack can actually happen without a person knowing it. This condition is known as a  silent heart attack , medically known as  silent ischemia , occurring due to the shortage of oxygen supply to the heart muscle. The causes of a silent heart attack are similar to that of a heart attack. 

They include- 

Conditions like: 
Obesity or excess weight 
Diabetes 
High Blood pressure 
High cholesterol 
Heart Diseases 
Lack of exercise 
Age, usually above 65 
Consumption of tobacco or smoking 
High consumption of alcohol 
A silent cardiac arrest makes one more vulnerable to another heart attack that could be fatal. Diagnosis: The only method to diagnose if you had a silent heart attack is through imaging tests, such as echocardiogram, electrocardiogram, Holter Monitoring or others. These tests can show certain changes which might be indicative of a heart attack. An analysis of one s overall health and the symptoms can aid in deciding whether few more tests are required. 

How would you prevent a silent heart attack? 
1.   Get your cholesterol and blood pressure count tested regularly. 
2.   Refrain from smoking. 
3.   Get your VO2 max checked regularly. 
4.   Live a healthy lifestyle: Refrain from smoking and excessive alcohol consumption; exercise daily, eat healthy. 
5.   Control high blood pressure, cholesterol, and diabetes 
6.   Be aware of your body and call on a doctor if you feel there s anything which is bothering you. 

If you wish to discuss about any specific problem, you can consult a doctor and ask a free question.

Know Everything About Silent Heart Attacks

Your diet plays a major role in the health of your heart, so eating healthy should be somewhere on the top of the list for keeping your heart healthy as well. There are numerous heart disorders that occur due to unhealthy food patterns and consumption. Lifestyle factors are the major causes of heart disease, and diet occupies an almost compelling spot when lifestyle factors are taken into consideration. Here is a list of foods that keeps your heart healthy:

Salmon: Omega-3 fatty acids are very important for your heart to function optimally. Fishes such as salmon and sardines are rich in omega-3 fatty acids which lower the risk of heart diseases such as arrhythmia (irregular heartbeat) and atherosclerosis (accumulation of plaque in the arterial walls).

Oats: Like oats and milk for breakfast!? Congratulations! You are in luck; oatmeal has soluble fibers which help in lowering bad cholesterol levels. Just make sure that there is no added sugar in your oatmeal, as it will defeat the entire purpose.

Blueberries: Blueberries are rich in antioxidants that reduce the risks of heart attack and also decrease your blood pressure. So go ahead! Toss some blueberries in your oatmeal to get your daily dose of antioxidants which are such pre-requisites for supreme health.

Dark Chocolate: This will probably bring a smile to your lips. Dark chocolates contain polyphenols, a type of flavonoid, which is very good for your heart. Dark chocolate is known to reduce the risks of strokes and heart attacks. Watch the portion size as no matter what its benefits are, dark chocolates are still rich in calories.

Citrus Fruits: Citrus fruits such as lemons and Indian gooseberry are rich in compounds that lower cholesterol levels in the body. Tip   Start your day with a lemon juice and warm water. This betters your metabolism and also keeps your heart in fine shape.

Soy: Lo Behold Vegetarians! (and non-vegetarians as well). Soy is a protein rich food that is so good for your heart. It also contains heart-healthy fats and fibers that help bring down and normalize cholesterol levels.

Tomatoes: Tomatoes are rich in an antioxidant called  lycopene , which is very effective in getting rid of bad cholesterol. It thus helps in keeping your arteries healthy and reduces the risks of heart attacks.

Nuts: Nuts such as almonds and walnuts are rich in Vitamin E which helps in lowering bad cholesterol in the body. Avoid nuts that come with added salt.

Foods That Help You Maintain A Healthy Heart

5 Signs of an Unhealthy Heart

The heart is a muscular organ that helps to pump blood through the circulatory system by periodic contractions and relaxations. The heart is one of the most important organs of the body so much so that a single cardiac arrest or a heart attack can lead to fatal consequences. Even so, a heart attack is one of the most leading causes of death in the country. But there are some earlier symptoms that could alert you ahead of time. The following are signs of an unhealthy heart:

1. Sexual problems

Erectile dysfunction (ED) is one of the most predictable reasons for cardiovascular conditions. Today, patients who are diagnosed with ED are also considered as cardiovascular patients. This is because the heart is supposedly not able to pump enough blood to the genital area. In case of women, reduced blood flow can hamper arousal and delay orgasms.

2. Snoring and sleep apnea

If one snores loudly enough to prevent their partner's from sleeping or resort to using earplugs, one may be at a risk of having a weak heart. Restricted breathing during sleep is connected with a host of cardiovascular diseases. Sleep apnea, a condition where breathing stops for a brief span of time, is linked with higher cardiovascular risks.

3. Swollen, sore and bleeding gums

Swollen and bleeding gums are not only symptoms of dental conditions but also of cardiovascular difficulties. Medical experts believe poor circulation of blood arises due to underlying heart conditions. Recent studies are focusing on bacteria that are believed to cause gum disease as well as plaque inside the arteries of the heart.

4. Heart Arrhythmia

Irregular heartbeat or heart arrhythmia is a common sign of a weak heart. It is characterized by both fast and slow beating of the heart. Restricted blood flow to the heart strains the electrical signals that maintain the normal beating of the heart. This is one of the common causes of coronary artery diseases.

5. Chest pain

One of the most apparent signs of coronary artery diseases is chest pain. The cause of the sharp, clutching pain in your chest can be build-up of plaque in the arteries, which could lead to fatal consequences.



5 Signs of an Unhealthy Heart

If you are concerned about your heart s health, it is important for you to make some dietary modifications. Simple changes in your everyday diet may offer benefits, which help in preventing future heart problems. If you suffer from high blood pressure or high cholesterol or have atrial fibrillation.

Here are some tips regarding the best diet for protecting your heart:

Believe in the food hype: Having healthy meals is certainly beneficial and makes a big difference to your heart health. Consuming meals which contain vegetables, grains, low fat dairy and lean meat will allow you to live a longer and healthier life.
Avoid crash diets: A crash diet may be effective, if you want to fit in a dress within one month. However, for improving your heart health, undertaking different fad diets is not useful. Meals in which a certain type of nutrients such as carbohydrates or fats are ruled out are not beneficial as well. You should have a sensible approach towards your diet and focus on food products such as vegetables, whole grains and lean meat.
Do not overeat: Overeating will lead to weight gain and commonly, many people get heart attack after taking a big meal.
Eat less salt: You should consume less amount of salt in your diet and do not eat more than one teaspoon of salt a day. Avoid any food item which contains high amounts of sodium. Salt is responsible for increasing blood pressure.
Limit your intake of alcohol and caffeine: In case you suffer from atrial fibrillation, you should avoid caffeine and any other stimulant as they tend to trigger the symptoms. You must drink moderately as consuming more than one drink a day increases your risks of having heart problems.
Choose meat wisely: You should avoid red meat, which contains large amount of saturated fats as these are not good for the heart. You should choose the leanest cuts of meats and trim all fat from it. You should opt for cuts such as flank, rump roast, tenderloin and sirloin. Pork tenderloin, chicken and turkey breast are other alternatives.
Add fish to your diet: Fish is essential for improving your heart health. Try to avoid having deep fried fish and choose grilled fish or roasted fish, which are rich in Omega-3 fatty acids. Consume fishes like tuna, salmon, trout and sardines.
You should also add whole grains to your diet. They are effective in controlling blood sugar and lower the chances of diabetes. Hence, the risks of heart diseases are less if you do not have diabetes. Whole grains also help with weight loss, which is beneficial for the heart.

7 Tips for a Healthy Heart

Be it burgers, bagels, muffins, sandwiches or simple toasts, bread has made headway into the diets of a huge portion of the populace. Although a staple diet for many since time immemorial, the consumption of bread has increased extensively in the recent past. But, which type of bread should we intake to incur the best health impacts is a question that bothers many. The general assumption is that the wholegrain variety is the best alternative. However, the barrage of marketing tactics makes it impossible to distinguish the best variety from the others. 

There are a whole lot of myths surrounding the best variety of bread and you must choose wisely before settling for one particular type. It is expedient to look beyond the overt appearance or the name of the bread, one needs to be wary of the ingredient before taking a call.

Mostly, white bread is made out of refined flour which is often striped off essential nutrients and fibers. To worsen the situation, white bread is often bleached with certain chemicals to enhance its appearance.
Certain assumptions deem brown bread as the healthier option. Unfortunately, it isn't true always. More often than not, brown bread is simply white bread with artificial coloring added to it or is caramelized. They essentially add no surplus nutritional value.

Similarly, multigrain bread can often mislead the consumers about its health impacts. Unlike whole wheat bread, multigrain breads are usually chemically treated with softened grains. This does not effectively recover the lost nutrients of the bread.

Whole wheat bread has more pronounced health benefits. It contains more wheat germ and fibers in comparison to the more processed varieties of bread. Having evaded the toxic additives, it has relatively healthier effects on our blood sugar levels.

As you realize that the bread that you eat does not necessarily affect your health favorably, wisdom lies in seeking out the least harmful variety. In that context, rye bread or spelt bread contains greater amount of minerals. Besides, bread made from barley, oats and millets have greater mineral content than the commercially hybridized varieties and promote better health.

Brown Bread Vs White Bread Vs Whole Grain?

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