Atrial fibrillation is the heart condition created when the electrical signals which coordinate the contractions of the twinned-chambers of the heart starts to malfunction. Very often, atrial fibrillation goes unnoticed and does not present any symptoms for the patient or doctor to recognize and diagnose the condition but atrial fibrillation can be extremely serious as well as life-threatening. [...]
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Today marks the first day that my wife will stop taking one of her heart medications. You see, about 2 months post heart surgery we’re finally ready to see if the it was actually successful. It has been a long road to travel, and this will be the first step on the road [...] Well, it has been almost a week and a half since my wife’s heart procedure. She had a pretty intensive ablation as she has a rapid heart rate and atrial fibrillation. She had the same procedure about 3.5 years ago which was unsuccessful, but things got progressively worse and we were booked for [...] To pump blood, your heart muscles must contract and relax in a coordinated rhythm. Contraction and relaxation are controlled by electrical signals that travel through your heart muscle. Your heart consists of four chambers — two upper chambers (atria) and two lower chambers (ventricles). Within the upper right chamber of your heart (right atrium) is a group of cells called the sinus node. This is your heart’s natural pacemaker. The sinus node produces the impulse that starts each heartbeat. Normally, the impulse travels first through the atria and then through a connecting pathway between the upper and lower chambers of your heart called the atrioventricular (AV) node. As the signal passes through the atria, they contract, pumping blood from your atria into the ventricles below. As the signal passes through the AV node to the ventricles, the ventricles contract, pumping blood out to your body. In atrial fibrillation, the upper chambers of your heart (atria) experience chaotic electrical signals. As a result, they quiver. The AV node — the electrical connection between the atria and the ventricles — is overloaded with impulses trying to get through to the ventricles. The ventricles also beat rapidly, but not as rapidly as the atria. The reason is that the AV node is like a highway on-ramp — only so many cars can get on at one time. » Continue reading Causes of atrial fibrillation » Atrial fibrillation is a disorder that is fairly common and found in about 2.2 million Americans and roughly 250,000 Canadians. During atrial fibrillation, the heart’s two small upper chambers, known as the atria, quiver like a bag of worms instead of beating as it normally should. Subsequently, blood isn’t pumped completely out of the atria and may pool and clot. If a piece of a blood clot in the atria is pumped out of the heart and becomes lodged in an artery in the brain, the result is a stroke. About 15 percent of strokes occur in people with atrial fibrillation. [...] |
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