Pacemaker cells of heart

Common Questions and Answers about Pacemaker cells of heart

pacemaker

Avatar n tn hypokinesis can also be the result of stunned cells. Stunned heart cells affected by a heart attack can be revitalized if blood/oxygen is quickly provided within a few hours to the area affected by an acute heart attack. Akinesis is different from hypokinesis in that the heart cells affected are necrotic (dead). Stem cell therapy may be helpful for that condition. Five years ago I had hypokinesis of the left ventricle wall and a low EF.
Avatar n tn Your heart cells are all capable of contracting and causing the heart to beat. Usually, this job is segregated to specific cells that most people refer to as the "natrual pacemaker." However, as I said before, ALL heart cells are capable of triggering a contraction. When the electrical system in your heart goes a bit haywire (like a blown fuse or a power surge) then the cells in the heart can react by causing a premature heart beat.
255722 tn?1452546541 The spread of electricity throughout the heart muscle is possible because all heart muscle cells, not just pacemaker cells, are excitable. Usually, the heart muscle cells keep time more slowly than normal pacemaker cells. This allows the pacemaker cells within the SA node to be in control of generating and pacing the heartbeat.
Avatar n tn The spread of electricity throughout the heart muscle is possible because all heart muscle cells, not just pacemaker cells, are excitable. Usually, the heart muscle cells keep time more slowly than normal pacemaker cells. This allows the pacemaker cells within the SA node to be in control of generating and pacing the heartbeat.
696415 tn?1228229959 The sinoatrial node (SA node) is a group of cells positioned on the wall of the right atrium, near the entrance of the superior vena cava. Cells in the SA node will naturally discharge at about 70-80 times per minute. Because the sinoatrial node is responsible for the rest of the heart's electrical activity, it is sometimes called the primary pacemaker, the natural pacemaker.
Avatar n tn The spread of electricity throughout the heart muscle is possible because all heart muscle cells, not just pacemaker cells, are excitable. Usually, the heart muscle cells keep time more slowly than normal pacemaker cells. This allows the pacemaker cells within the SA node to be in control of generating and pacing the heartbeat.
Avatar n tn The sinus atrial node is a clump of cells in your heart that put out an electrical current that causes the rest of your cells in the atrial center of your heart to contract. The electrical current continues into the ventricular node and causes the bottom of the heart to contract immediately after that.
Avatar n tn Dehydration is by far the biggest killer with fever, and fluid loss can be counteracted by monitoring the patient and using IV to push more fluids in. With loss of fluids, cells will start to die, blood pressure will drop and this is not a good situation to be in. From reports I've read with brain cells, they may start to die at 42c. From the patients I've observed in intensive care, they keep the heart rate low, 70-80 to keep it from overworking over long periods of time.
Avatar n tn s nearly 30 years ago and I think heart failure would have begun years ago from that. What you need to establish is the cause of the heart failure. Have there been more blockages in the arteries that haven't been treated? was there as infection involved? I get the impression that artery blockages have been the cause, hence the pacemaker requirement because the normal cells transmitting the signal have been killed. The question would be, why didn't they treat those blockages?
Avatar m tn Yes, the condition can infect the heart's natural pacemaker. The heart's "natural" pacemaker is called the sinoatrial (SA) node or sinus node. It's a small mass of specialized cells in the top of the heart's right atrium (upper chamber). It makes the electrical impulses that cause your heart to beat.
Avatar f tn do you have an ICD/defrillator also?
Avatar f tn These were stem cells made from my OWN STEM CELLS not embryonic. So, no chance of rejection, no extra pills to take. There is over an 80% chance of improvement. My EF was between 12 and 15% before new stem cells. Have not had another EF test yet. I am diabetic(insulin dependent.) I do have a defibrillator and pacemaker. Would be only too happy to share my experiences - they will be on-going!! It is a shame one has to go out of the country to have this procedure done.
Avatar n tn Causes could be genetic history, certain infection types, recent heart attack, heart disease. If the cells are damaged, then there is always the option of a pacemaker. This will ensure the signal goes to the right chamber the same time as the left.
1744581 tn?1311302411 I dont know if the lead can cause such effects, but hypokinesis is sometimes reversible. It depends on whether heart cells are dead or hibernating. It of course negatively influences ejection fraction (depending on position in heart), which can make you feel tired. In time, things still can improve. I understand your frustration.
1400314 tn?1280731525 Hi mcalderon91723, If this were me, one of the things I'd like to know would be what terminated the 7.5 second pause? My understadning is that every cell in your heart can become a pacemaker. It's nature's wonderful backup system in case the regular pacemaker signal doesn't reach the ventricles. The noraml pacemaker is a group of cells in the atrium called the "sino atrial node" or SA node.
Avatar f tn My daughter was diagnosed with a variety of heart problem when she was two months old. She currently has a pacemaker which she only uses when her heart rate goes above 115 bpm. When she has surgery 7 years ago the surgeon lost a surgical needle in the center (av node) area of her heart. Could the needle be the reason she is having heart block? She is ten now.
Avatar f tn PVCs and PACs occur when heart cells other than the typical pacemaker cells generate an electrical impulse and then a muscle contraction and heart beat. These may occur rarely or in some cases very frequently. Similarly, some people aren't aware of these while other people feel very symptomatic with them.
Avatar f tn last februray her heart defibulator started firing alot because of racing heart. At the same time her platelets dropped dramatically to 1700,white cells are up and her stool turned cream colored. She has had a bone marrow biopsy which was negative for cancer. We still dont have any answers.
Avatar n tn 23 Million Stem Cells were injected into my heart muscle and vascular system - via an angiogram. 80% of those 23 million were tagged for my heart. I will be glad to put you in touch with the Heart Clinic, in Florida, that I used. The procedure is not covered by insurance - again because of lack of FDA approval. Testing is being done in the U.S. in Chicago and Texas - might be elsewhere that's the 2 I know. The problem with getting in on a "study" is that it is a blind study.
Avatar m tn In other cases, people may have no symptoms but are at high risk for dangerously slow heart rates because of disturbances of the electrical system of the heart. A pacemaker may be recommended for these people before symptoms occur. There are no electrical disturbance shown with your post?! Because a wrong decision can be very serious I would hesitate to second quess a doctor's assessment.
4865726 tn?1360211940 the heart will pump more efficient if the impulse origin there instead of low down in the heart). It is by nature selected to be the pacemaker if signals from higher up in the heart for some reason are blocked or inhibited. I can't say for sure if you do have dysautonomia (I'm not a physician) but maybe you should discuss it with a specialist?
Avatar n tn Normally, the electrical activity spreads from one heart cell to the next in an orderly and coordinated way to allow the heart to pump blood. During each normal heartbeat, the muscle cells in the upper chambers of the heart, the atria (AY-tree-uh), contract. The contraction pumps blood from the atria to the ventricles. Then the muscle cells in the ventricles contract, pumping blood from the ventricles to the lungs and the rest of the body.
Avatar n tn Your basic heart rate is set by a specialized region of the heart called the 'Pacemaker.' Many cardiac muscle cells can contract spontaneously, but the cells in the Pacemaker region are, during fetal development, the fastest-beating ones, and the fastest ones normally dominate the whole show.
Avatar n tn My question to you is this - do you know the name of the procedure that would fully sever the nerves which incite the heart to beat? I'm trying to research this procedure, and specifically, gain a clear understanding of the associated risks (along with mortality data), both immediate and long-term. I thank you in advance for any guidance you can provide.
Avatar n tn Hello. Usually the heart rate would increase when a fever is present. If a patient has Sick Sinus Syndrome where the heart rate cannot increase because the sinus node is "sick" then a pacemaker is implanted and a range of, usually, 60-100 beats per minute is set. If this person's heart rate cannot increase ON IT'S OWN and their pacemaker is set at a low rate of 70 beats per minute, the fever will not cause the heart rate to go up because it can't.
Avatar f tn I seriously doubt that you are "imagining" the palpitations. Since the artificial pace maker has stopped functioning in a certain part of your heart, some of your "normal" heart cells are probably trying to take up for the loss. However, not being the natural pacemaker center, these cells fire at inappropriate times causing what you are feeling as palps. As for what to do, I can only tell you what I would do. I would get the thing fixed or replaced ASAP.
Avatar m tn 2) Considering her need for a higher dosage and her occasional heart block, the combo of verapimil and a pacemaker is an appropriate next step. As I recall, a member of this board, scouser costa rica, has a pacemaker like your wife's doctor is recommending and it's working out well for him (he also takes amiodarone to decrease the frequency of afib episodes and to lower his heart rate when it does occur).. 3) There are two types of ablation to consider.