Atrial Contractions

Verlyn Ross asked:


This article is an attempt to remove confusion concerning some of the issues regarding congenital heart disease.

Congenital heart disease is a kind of malformation or heart defect that exists somewhere in the heart. In some cases it is a defect that can be found in one of the blood vessels of the heart. It is defined as congenital because the defect is present when a baby is born. It is strongly believed that these types of heart defects take place while the fetus is developing but it is not clear at what stage throughout the nine months that it takes hold. Out of every 1,000 children born, 8 to 10 have this condition.

Some babies show symptoms of congenital heart defects from the very beginning of their lives while other people will not show symptoms until later in their childhoods. In other cases, such a defect is not discovered until a person has become an adult. It is estimated that 500,000 American adults suffer from congenital heart disease.

Trying to discover the cause of congenital heart disease is not easy. Most of the time the cause of it is not known. Doctors and medical researchers have discovered factors that do seem to suggest an increased risk of developing this disease however. One of these risk factors is a chromosomal abnormality or a genetic abnormality such as Down syndrome. Women who drink alcohol, use drugs or take specific types of medication during the period of their pregnancy are more likely to give birth to children with congenital heart defects. When a woman contracts a maternal viral infection such as German measles (also known as rubella) during the first trimester of her pregnancy she is more likely to give birth to a child with this disease.

If someone in the family such as a parent, grandparent or brother or sister was born with a congenital heart defect then the risk of a child in the family being born with it is even higher. For example, the risk for the general population is eight in 1000 but it becomes 16 in 1000 for those who have a family member with it.

There is more than one type of congenital heart disease. Heart valve defects are very common and these are stenosis or narrowing of the heart valves or in severe cases, valves that are narrowed to the point that they do not allow blood through at all. Leaky valves also fall under the category of heart valve defects. Atrial and ventricular septal defects which are defects in the walls between the atria and ventricles of the heart cause some blood which is oxygenated and some blood which is not, to mix which can cause problems in both the right and left areas of the heart. Another type of congenital heart disease is abnormalities in the heart muscle, which can then cause heart failure.

Congenital heart disease can cause symptoms but often times there are no symptoms at all. Sometimes it is necessary to undergo medical tests to determine whether or not a person is afflicted with this disease. If symptoms do show themselves the two most common are shortness of breath and a decreased ability for exercise.



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Pat. asked:


Possible Answers:
A. Atrial repolarization and contraction.
B. Atrial depolarization and contraction.
C. Atrial depolarization and relaxation.
D. Ventricle depolarization and relaxation

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technomanmike asked:


Around two days ago, i started to notice a feeling in my heart like it is skipping a beat or fluttering. I went to the cardiologist today and he said i have premature atrial contractions. I am now wearing a 24 hour holster that records my heart rate. I have around 8 PACs a minute. Should i be worried?
I am seventeen years old, 5 foot 8, and weigh around 160.

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dunk asked:


Most accuratly would you say that the mechanical energy that drives circulation is….

a.) arterial punping
b.) atrial contraction
c.) myocardial division
d.) ventricular contraction

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BoostLikeWoa asked:


I have suffered from what you are talking about. I am a healthy 25 year old female and I have been through every battery of test you can imagine on my heart because of this. I used to feel like my heart stopped beating for a second and I would have to cough. It completely freaked me out and my husband and I had many a trip to the ER. Like a previous post, I wore a holter monitor, but felt that the irregular beat didn’t occur when I wore it. After all my tests and meeting with a cardiologist, I was diagnosed with having Premature atrial heart contractions. It is completely normal. Everyone gets them. It isn’t an extra beat, it is a “skipped” beat. Everyone has them but only about 50% of people can actually feel them when they happen. My cardiologist said no one knows why some people are more sensitive to feeling them and some others are not. She said I could take medication to keep them from happening, but the side effects wouldn’t be worth it. They don’t change your life expectancy and are not a risk. Some people get them only when they are stressed and some people get them every other heartbeat. It is sort of like your heart is re-seting itself, like an internal pace maker. It makes you feel like your heart skips a beat or has an extra beat and may make you cough as a reflex. Working out helps as does keeping stress levels and caffeine consumption down. I went for a long time after without having (or feeling) them until I got pregnant with my second child. My recommendation is to ask your doctor about it. It has given me a world of comfort because once you start having them and they scare you, the anxiety that is derived from having one makes you more likely to experience more of them. I hope this helps and gives you something to discuss with your respective doctors.

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eric smith asked:


THIS ISNT ANY HEART CONDITION OR ANYTHING AND I DO HAVE A LOT OF STRESS AND DO SMOKE TOO MUCH BUT IF I QUIT SMOKING AND LEARNED TO RELAX MORE AND THIS STOPPED WOULD I STILL BE DISQUALIFIED FROM JOINING? HERES WHAT IT SAYS.

Premature (Extra) Beats

Premature beats are the most common type of arrhythmia. They are harmless most of the time and often don’t cause any symptoms. When symptoms do occur, they usually feel like a fluttering in the chest or a sensation of a skipped beat. Most of the time, premature beats need no treatment, especially in healthy people.

Premature beats that occur in the atria are called premature atrial contractions, or PACs. Premature beats that occur in the ventricles are called premature ventricular contractions, or PVCs.

In most cases, premature beats occur naturally, not due to any heart disease. But certain heart diseases can cause premature beats. They also can happen because of stress, too much exercise, or too much caffeine or nicotine.

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