Pacemaker

Vascular Dementia Can Happen to Anyone

…pressure is the cause. But it can also happen in people with arteriosclerosis, valvular disease, congestive heart failure, atrial fibrillation, and pacemaker therapy. The classic signs of VaD are slowed thinking, memory problems, confusion that often worsens at night, personality changes, loss of social…

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Do You Need a Heart Pacemaker?

…used to set pacemakers at 72 bpm. But before getting a heart pacemaker, you want to make sure your doctor rules out other causes of these symptoms such as the use of beta blockers or a heart block. * Anyone with heartbeat pauses of 3 seconds or more should be evaluated for a heart pacemaker. This can be…

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The SA Node: An Intrinsic Heart Pacemaker

Most people are familiar with the artificial heart pacemakers that we use to keep the heart beating, but many don’t realize that the body has built-in heart pacemakers of its own. Every cardiac cell is capable of automaticity (to fire on its own) and conductivity, but there is a specialized network…

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Intrinsic Cardiac Pacemakers

Today, I want to tell you about a couple of intrinsic cardiac pacemakers. We'll start with the atrioventricular or AV node. Like our discussion of the SA node, the discussion is pretty technical. Look at it as a way to impress people around the watercooler! The AV node is a "back up" for the SA node…

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The Symptoms of Atrial Fibrillation

…aorta, circulating oxygen-rich blood throughout your body. What happens with the symptoms of atrial fibrillation is the heart’s normal electrical "pacemaker" is bombarded by competing electrical charges, which originate in the atria—hence the name, atrial fibrillation. These competing impulses initiate…

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