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Pacemakers
An artificial pacemaker is a medical device that regulates the heartbeat via electrical impulses that are delivered by electrodes, which contracts the muscles of the heart. Pacemakers are given to people who have a slow natural pacemaker or those who have a cardiac obstruction blocking natural electrical impulses.
470 Questions
Why the sino atria node is regarded as a pacemaker in the heart?
The sinoatrial, or SA, node is known as the pacemaker of the heart. There are other potential pacemakers if the SA node fails, but it is the main pacemaker.
You should not be able to hear your pacemaker. If you do, it could be due to a malfunction and you need to see your doctor.
What makes the pacemaker stops?
The main cause of a pacemaker to stop working is the battery going dead. Another cause would be a malfunction within the electrical system. These 2 causes are very, very rare.
What is the structure of the artificial pacemaker?
The sinoatrial node is commonly referred to as the pacemake of the heart. Located in the atrium, the SA node usually "fires" 60 to 100 times a minute which induces the heart to beat. Heart rhythms that start from this node are known as sinus rhythms.
The heart also has a atrioventricular pacemaker that "fires" at 40 to 60 beats per minute. If the sinoatrial node fails to function, the AV node will begin to work. Heart rhythms that are generated from this node are known as junctional rhythms.
Finally, as a last resort, there is a ventricular pacemaker. This "fires" at a rate of 20 to 40. These rhythms are described as idioventricular or "escape" rhythms. People whit these heart rhythms most likely will be experiencing severe signs and symptoms of poor perfusion.
Current pacemakers have a double, or bipolar, electrode attached to the end of each lead.
See this link about pacemakers at the end of life:
http://www.mcw.edu/fastFact/ff_111.htm
What is a pacemaker and how does it work?
A pacemaker can be implanted into the chest to stimulate the heart so that it beats in a regular rhythm.
Dose having a pacemaker make you ellegble for a handicap parking pass?
A doctor (preferrably the on who did the pacemaker surgury) is the only person that can make a determination that you are partially, or temporarily, or permanently disabled.
What should you feel like after having a pacemaker put in - will you feel any better?
yes i do think you would feel better if you had a pace maker put in. but only if you need one.
What is the average lifespan of a person with pacemaker?
7-10 years depending on the amount (1,2 or 3) of leads attached to it and how hard the pacemaker has to work to send electrical signals to the heart.
Who invented the first plutonium pacemaker?
The first pacemaker with plutonium 238 was implanted in Paris (France) in 1970, as a collaboration between Medtronic (USA) and Alcatel (France).
What is a pacemaker and where it is located in the heart?
pacemakers when implanted are usually located in the subclavian pocket just under the collarbone on the left side cause its closer to the heart. its just a safe place closest to the heart, that's all.
How much does medicare pay for pacemaker replacement?
What is the cost of a pacer maker in a 95 year old man?
Well a pace maker can cost up to 10,000 to 45,000 depending on the qualtiy and the condition its in. Or some could be found cheaper
What does a ventricular pacemaker do to initiate a heartbeat?
The SA node (Sinoatrial node) sets the pace for the heart as a whole because no other region of the conduction system or the myocardium has a faster depolarization rate. For this reason, it is the heart's pacemaker.
Are earth magnets safe to use with a pacemaker?
See, my grandma has a pace maker and she used to wear magnet 'healing' bracelets, and they never seem to effect her. but i wouldn't trust me, ;P you should probably just ask a doctor about this one.
Where is a pacemaker placed in the body?
The pacemaker of the heart is the sinoatrial (SA) node, which is located in the upper right atrium, just below the entrance of the superior vena cava. The SA node is responsible for setting the heart rate for the heart.
What part of the heart is the pacemaker located in?
The pacemaker of the heart is a bundle of cells that tells the heart when to beat. These cells are connected to the rest of the cells of the heart and communicate with them through electrical signals. The pacemaker cells set the pace (or rate) of the heartbeat.
The actual structure that serves as the heart's primary pacemaker is called the sinoatrial node (SA node). As described above, the SA node is a little bundle of cells located in the wall of the right atrium, the small upper chamber on the right side of the heart.
What if the SA node is knocked out for some reason? There are actually other regions of the heart that can act as pacemakers. These regions are known as latent pacemakers and include the atrioventricular node (AV node) and other cells that make up the electrical communication system of the heart (including special cells that make up the so-called Purkinje fibers of the heart). Even the cells that make up the large ventricles of the heart can set the pace of the heart.
Interestingly, each of the pacemakers described above has a different inherent rate that it "wants" the heart to beat at. For example, the SA node gets excited spontaneously at a rate of about 100 per minute. Some of the latent pacemakers might spontaneously get excited at a rate of 65 per minute or 45 per minute.
If that's the case, then wouldn't the heart just beat chaotically? How is it possible that the heart beats in a regular way with all of these different pacemakers lying around?
The reason is that under normal circumstances, only the SA node is active; all of the other latent pacemakers are basically inactive. Now, should the SA node fail, the AV node can take over. Likewise, if the AV node fails, cells that make up the Purkinje fibers can take over. And if even they fail, then the ventricular cells can take over as a last resort. There's lots of redundancy for this all-important organ.
Another type of pacemaker is the type that gets implanted by physicians. In patients with abnormal heart rates or rhythms, an artificial pacemaker can be implanted. These pacemakers serve the same purpose as the natural pacemakers of the heart: they control the regular rate and rhythm of the heart.
What is the function of your natural pacemaker?
The contraction of heart (cardiac) muscle in all animals with hearts is initiated by chemical impulses. The rate at which these impulses fire controls the heart rate. The cells that create these rhythmical impulses are called pacemaker cells, and they directly control the heart rate.
Should you use an electric blanket if you have a pacemaker?
No, but an electric blanket can interfere with a pacemaker. Furthermore, electric blankets are dangerous in general!
Where can one buy a pacemaker?
Pacemakers are bought from medical manufactures by the doctor or hospital where the implantation surgery will take place. A patient would not be able to purchase a pacemaker on his/her own.
