Pacemaker cells of the heart are located in the

Common Questions and Answers about Pacemaker cells of the heart are located in the


Avatar_f_tn It messed the bottem part of my leg up and I have permanent bad blood flow in it now.That night I had it done I had a complete heart block and lived passed it! I guess I am just scared and not sure about the whole thing again?????? If any one els has had it done please write me back please! Ablation of the heart and thinking about the second time around!!!!!!
Avatar_n_tn By this action blood is ejected from the heart. In summary, an electrical impulse initiates in the top part of your heart, usually the SA node, producing a spread of electricity across your heart and exciting the heart muscle's cells as it travels. This ultimately results in the contraction of the lower chambers, the ventricles, from which blood is pumped throughout your body. The Pacemaker Can Lose Control!
255722_tn?1452550141 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.
211940_tn?1267884866 A bursa is a tiny fluid-filled sac that functions as a gliding surface to reduce friction between tissues of the body. There are 160 bursae in the body. The major bursae are located adjacent to the tendons near the large joints, such as the shoulders, elbows, hips, and knees. The shoulder is the most mobile joint in the body. When a person reaches overhead, the tendons that move the shoulder must glide almost two inches past a bone surface.
Avatar_m_tn At first I thought he was really listening, but now I think it's just his opinion of the drug companies are just getting in the way. Believe me I've taken just about all of them in 17 years time. I thought Tirosint was going to be well suited for me since I seem to not retain many meds, because it was a gel cap and not many fillers, but I think it might have been a mistake to leave the synthroid and not increase it instead.
Avatar_m_tn I would suggest also other medications to be tried such as beta blockers. But RFA of a re-entrant pathway is the procedure of choice, especially if it is located on the right side, where it is technically simpler to ablate.
Avatar_n_tn Hello Arthur, I browsed through the archives, and found a message from an Arthur the date 2-6-2002, about internal quivering of the heart. (Is it the heart that quivers, or the muscles around the heart?) Is that you, Arthur, who posted so many messages on the page about PVCs and PACs? In any case, I have(now a couple of months) the same feeling of an internal vibration, while the heart is beating normally or somewhat faster and harder. I find it very disturbing and it makes me nervous.
Avatar_n_tn Generally, PAF which has a PV origin, is treatable with RF ablation, and these days, the techniques target isolation of the foci (electrically active cells) located in those pulmonary veins...with no, NO, pacemaker requirement. The pacemaker is needed when the ablation is aimed at the AV node (central natural pacemaker) in order to stop your heart from beating too rapidly and erratically. I'm sure your doc was referring to the RF ablation of the foci in your PVs.
Avatar_n_tn Alcohol may trigger an irregular beat by changing the chemical structure of the cells in the heart. Thus it is the chemicals that really cause the extra beats. All these drugs change the way cells emit and take in chemicals (potassium, etc). In this way it is intented that all the cells become synchronized--thus no irregular beats. Thus the real cause is that cells develop the propensity for irregularity, and no one knows why this happens.
Avatar_n_tn Dear Laurie, Long QT syndrome, as you know, is an abnormality on the cellular level of the cardiac cells resulting in prolongation of repolarization of the heart that is seen on the surface ECG as a prolongation of the "QT interval". There is an increased risk for sudden death and beta-blocker medications reduce this risk. A low atrial rhythm refers to where the heart's pacemaker is located.
Avatar_n_tn My sinuses burn and feel like they are cold and I have a headache in the middle of my forehead.. It is hard to explain but it is a miserable feeling.. I was recently on penicillin for a bladder infection and my mouth was so sore I could not eat. I am wondering if certain meds trigger this re-action. I am 71 years old and have had a few allergies and sinus problems, but otherwise in good health..I wish you all the very best and hope we can find something to stop this...
Avatar_n_tn A very fast heart rate does not provide enough time for the heart's chamber to adequately fill and as a consequence the system may not get enough blood/oxygen and that includes the heart. Ischemia (lack of blood flow) to the heart cells can/will impair contractions leading to heart failure. Also a heart rate sustained above 100 bpm at rest stresses the heart and can cause heart enlargement and impair contractions resulting in heart failure and it can cause arrhythmia (irregular beats).
Avatar_f_tn The heart's pacemaker, the SA Node,(located in the Atrium, the top chambers of your heart) normally controls the rhythm of the heart. But other cells on the heart are also capable of initiating the heart beat by discharging. These cells can be located in the atrium or ventricles on your heart, and are usually irritated for some reason, causing them to electrically discharge at undesired times. Imagine that the small x is a normal beat and the capital X is the PVC.
Avatar_n_tn I get sharp, scary numb pricks in the right side of my neck as well. I too sit in front of a computer for 9 hrs a day. it is really starting to scare me....hoping it isn't something dangerous. I suffer from anxiety as well....curious how many of you do as well?? Please anyone let me know if you find out the problem, solution or medical diagnosis!!
398059_tn?1447949233 Located in the middle of the back just below the ribs. The upper lumbar region controls the hips and legs Sacral Segments (S1 to S5): Just below the upper lumbar region in the middle of the back. This region controls movement in the groin, toes, and some parts of the legs There are two types of spinal cord injuries: complete and partial. If a spinal cord injury is complete, there is no function below the point of injury.
Avatar_f_tn So, their potential to be pacing the heart is the highest of any other cells. But, any cell in your heart can become the dominant pacer. In the case of PVCs, cells in your ventricles have fired and caused the ventricles to beat prematurely. I could get into a long discussion on why that feels the way it does but I won't for the sake of me not typing this all day. What's so cool here is that the heart has many many built in fail-safes in case the SA node fails to pace the heart.
Avatar_n_tn the most popular source is a focus, ie, a bundle of electrically active cardiac cells typically located at the pulmonary vein connections behind the heart. Foci can be found in other locations as well. Foci are stimulated into stronger action directly or indirectly by a variety of chemicals, which include adrenaline and caffeine. In addition, the general tone of the nervous system can influence how well the foci disrupt the normal beat.
Avatar_m_tn The main research I'm following with great interest is the growing of a new patients heart in a lab using their own stem cells. Working hearts for mice and rabbits have been grown fully functional, but this research seems to be slowing down. I think their main concern is ensuring a modified stem cell won't suddenly turn rogue, becoming cancerous. However, I think in the next few years, we will see the first human trials.
Avatar_f_tn There is a quarrel, and often my sympaticotonia wins. The cosequence is then tachycardia or varying heart rate. In 2010 I used Multaq at the end of the AF period. The sinus rhythm could be returned with multaq and electric cardioversion together. Maybe it could have succeeded even without Multaq. I was waiting for cholecystectomia. My liver enzyme (ALAT) increased for some time, but it could not surely be attributed to Multaq. It could also be due to cholelithiasis.
Avatar_f_tn Lookup something called an “Escape Beat”. You see, any cell in your heart can become the pacer of your heart beat. The reason the cells in the Sinoatrial node (SA node) pace the heart is because they *most of the time* are firing the contraction beat at the fastest interval. It’s incredibly elegant the way it works and how it perfectly times the contractions of the upper and lower parts of the heart muscles. Try to envision this; I’ll do my best to narrate the story.
Avatar_m_tn a heart attack is from blocked arteries in the heart that damage the heart muscle from lack of blood flow to an area of the heart. The lack of blood flow to an area of the heart can damage the heart causing a serious arrhythmia. PVC's and Pac's, on the other hand are from irritable foci in the heart. PVC's are just that..... PVC's. Pvc's were are one point thought to be dangerous, but that was a long time ago! (60's and 70's).
Avatar_m_tn The insertion of the catheters and the pacing of the heart during the procedure were painless. You are so lucky that medicine has found a cure for this debilitating condition and that you will not have to live the best years of your life like a lot of us have, living in fear of another trip to the ER for an Adenosine fix etc.
Avatar_n_tn I myself developed a two day headache from the procedure (not to mention the loss of trust in the mental health field). A line from the David G Myers General Psychology 101 manual states: (I am stating the reference to the best of my recollection) "...does a man watching a violent erotic film lead him to give electric shock to a woman... which of course is not the same as slapping a face..." Could ECT be a means of therapy for abusers who have taken their power too far?
Avatar_f_tn From what my ep told me about cryo he liked to use it to test the bad spot initially in case there was a chance of a block so he could stop and the heart could recover but if the spot was safe he would use the RF to be more effective. Though according to my report my spot was far enough away when he discovered where it was he probably had no reason to worry and just used the RF right off the bat.
7014780_tn?1395591257 My research shows in 2-year Catheter Ablation studies, rather than 94% success, 72% were a success, 13% had recurrent of the same SVT, and 15% had SVT in a new area of the heart which needed new Ablations permanently scarring these new areas. Couple this with 1% complications like perforations or AV Node block needing a pacemaker and I am going to try swimming and lifestyle change before considering Ablation Surgery.
116881_tn?1189759423 Even if you get ventricular arrhythmias, the chances of VFIB are still quite low (since the heart has a couple of pacemaker systems to insure constant beating). Folks that die of VFIB generally have some structural issues with the heart (for example, ischemia which affects the blood supply to the ventricle muscle) I hope this puts things into perspective. I get mostly atrial arrhythmias (PACs and once in a while a short run of AF), and I play soccer and train at a very stressful level.
Avatar_n_tn During my annual echo, my EF dropped to 40 (it had dropped earlier in the year also), and a number of doctors suspected the pvcs to be the culprit. Because of the test results, they were able to determine that my MVP/MR was ot the problem, which led them to the pvcs! Hmmmm...."benign" just took on a whole new meaning for me. However, it is my under-standing that pvcs rarely cause this problem.
Avatar_n_tn PVCs in the presence of a normal heart are normal. I have had a lot of PVS since a very young age and totally ignore them. Try to cut out caffeine etc and maybe that would help. There are lots of arrhythmias that are life threatening that need research and intervention. Benign PVCs are not one of them. I guess I view these in the context of all that can and do occur and this is really not something to pay much attention to once everything is ruled out.
Avatar_n_tn so, we all end up with hearts that contain electrical cardiac tissue embedded in areas of the heart where only structural cells are really needed. Since this arrangement does not affect our ability to procreate, we have evolved with these islands (foci) in place. Most of the time, they are isolated and really don't affect anything. In some folks, unluckily, they may be located near enough to the normal lines of conduction to produce arrhythmias from early on.