Overview Of Heart Block: Abnormalities Of The Electrical System
The rhythm of your heartbeat is determined by the electrical impulses generated by your sinoatrial node. These impulses start in the two upper chambers (i.e. atria) and work downward through the two lower chambers (i.e. ventricles). As they travel downward, they cause contractions in your atria and [...]

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What To Expect From A Coronary Angiography
Your heart needs a constant supply of oxygenated blood in order to function properly. That is the job of your coronary arteries. They are located on the surface of the heart muscle and begin at the aorta. As blood moves from your left atrium into your left ventricle, the [...]

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