pacemaker of heart is sa node

after being released from hospital i was re-admitted and after an emergency angiagram it seemed the slow heart rate was due to the SA Node to my heart having a 40% blockage and having spasms.. my heart is perfectly fine and very good until these spasms happen with the SA Node.. i have been told this is a rare condition so i am trying to find out all i can about this as i seem to not had a named diagnosis or answers as to what this is or why it has happened and the long term affects..

Here is an excellent web page discussing Bradycardia and possible causes. http://cvi.med.nyu.edu/conditions-we-treat/conditions/bradycardia-bradyarrhythmia There is a nice graphic showing the construction of the heart, the SA Node (the heart's natural pacemaker), the AV Node (discharges in reaction to the SA Node Discharge or can Discharge Spontaneously if the SA Node fails to discharge in time.

In order to keep the heart rate sufficently fast, Doctors sometimes need to implant a Pacemaker that will discharge only when the SA Node fails to fire. This type of Pacemaker monitors the heart, and if the SA Node goes too long without firing, the Implanted Pacemaker will discharge, therefore keeping the heart rate fast enough. If the SA Node works as expected, the Implanted Pacemaker does not do anything, just monitors.

do you have an ICD/defrillator also?

This should show the Electrical Activity of the Heart, and whether or not the SA Node is functioning. In the absence of a normal SA Node, or at least a normally functioning one, an External Pacemaker may be needed to maintain the rate sufficiently. Also, the Vagal Nerve acts on the SA Node, causing the heart to slow after the Fight or Flight reflex, and can, at times, be too profound in its effect on the SA Node.

What they are probably talking about is either ablating (destroying) the SA node or AV node. Both are different and require different types of pacing.

Without an av node you will go into complete heart block and require the placement of a pacemaker. Without a av node or sa node you will go into an idioventricular heart rhythm, which is lethal if untreated. Yet another reason right sided infarcts are concerning. The final reason a right sided infarct is concerning involves low pressures in the right side.

However, after the surgery she has still been kept on pacemaker as cardiologists said her heart rate is still on 48-55 per minute (which is quite slow). The cardiologists have suggested that if the heart rate does not return back to normal a permanent pacemaker maybe required. Can anyone please suggest whether to wait for the heart beat to be back to normal or go for the pacemaker. Thanks in advance for the help.

5) If the ablation damages the SA node, it is likely that you will need a pacemaker. There are special types of pacemakers which can respond to PACs with pacing protocols which might succeed in suppressing the SVT. However, a pacemaker is an implanted device and can have its own complications. It may not be able to prevent the arrhythmia always. It would be prudent to avoid such a high risk ablation, if the arrhythmia can be controlled otherwise.

My grandmother of 87 years is facing heart related problems. The pulse rate is hovering around 30 beats per second. After doing research, I found that her SA and AV node could have failed. My question is, can temporary pacemaker and drugs treatment can recover SA and AV nodes. Or Permanent Pacemaker is the only option. If the permanent pacemaker is not fitted, what will her health status in near future. Please give your suggestions ASAP because I am undergoing a lot of stress and pain.

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.

s possible the damage to the nerve is part of the problem or it is possible the scarring from the ablation meant to fix the sa node is causing problems itself. I suspect the doctors are being cautious and maybe hoping it resolves on its own though the fact that the ablation was over a year ago that doesn't seem likely in my opinion. Unfortunately sa node modifications care a high risk of needing a pacemaker.

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!

I have an svt avnrt that required the modification of my avnode which is the point in the heart where the signal is distributed as opposed to the sa node where the beat is generated. I have not heard of too many cases of an sa node modification beyond it being actually eliminated and a pace maker put in. That said, my avnrt would register at 230bpm so I wonder if it is possible your doctor meant avnode as opposed to sa node?

A third degree AV block, also known as complete heart block, is a defect of the electrical system of the heart, in which the impulse generated in the atria (typically the SA node on top of the right atrium) does not propagate to the ventricles.

but has suggested to the cardiologist that the last resort is a pace maker ...AND an SA node ablation.... I cannot find much info on SA node ablation ... PLEASE HELP.. It must not be very common and my mind is saying very risky since there is not much info... Please give me resources.. info..

I had to get a pacemaker because I got complete surgical heart block after they sutured me. The damage was done to the SA node which is your own natural pacemaker. If I were you I would look into what happened during surgery that caused the needle to get "lost" I wish you the best !

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!

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.

In fact, all myocardial tissue is capable of generating electrical impulses (a normal heart has a concentrated area of polarization, the SA node, which dominates). It's a grand design wherin if your SA node fails, a 'rescue' beat is shot off to keep you going. Many people live in constant junctional rhythm.

I also got the 2 leads pacemaker and my av node ablated in 1985. The doctor said the pacemaker will pace out of any rhythms. As soon as the pacemaker is working, don't have to worry about the rhythms including V-Fib. Ask Dr McWilliams, he told some people here that long term pacing the right ventricle can cause heart failure. I don't want my heart fail... but my heart does make a lot of mistakes! Take care.

If I'm reading your follow-up correctly, the discussion with the EP centered around ablating the SA node? Read the study again, they didn't ablate to the point of disabling the SA node. None of the patients in the study required a pacemaker. The SA node was left intact.

I have heard that can happen with an avnrt ablation, the av node gets blocked and a pacemaker is needed. It is the biggest complication from that type of ablation but I have also heard that it can occur but once the heart settles down and maybe isn't swollen or something it goes away which is probably what your ep is hoping. I do hope that if this is the case with you that yours corrects itself. I think going in and out may be a good sign it will go away.

Then there is the wonderful back-up on the electrical system of the heart. The SA Node, in the Atrium, is the heart’s natural pacemaker. It discharges, the signal travels, and activates the AV Node, from there going into the ventricles. But what if the SA Node fails? Surprisingly, if the AV Node does not receive a signal from the SA Node, it discharges by itself, and causes the heart to beat. Mind you, the heart beats at a much slower pace, referred to as Bradycardia, but it does keep beating.

Pacemaker of heart is sa node

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