Metoprolol side effects after stopping. Heart poundingPalpitation SVT

'...I went to the hospital from eating a tomato turkey sandwich non-gmo spinach pizza etc. So no tomatoes for me...'
How do you know it wasn't the bread? Or the turkey? An ingredient in the turkey if it were partially or wholly cured?
'...Should I be concerned and is that heart damage permanent?...' The elevated troponin is a marker of some kind of myocyte damage, but it's a low result. I had the same after going into AF and having a cardioversion (four in total and none of them worked more than about 10 hours). The heart damage is only permanent if tissue dies, such as during a heart attack. Otherwise, like all living tissues, they can repair themselves, at least partially. Your troponin levels will almost certainly be elevated after your upcoming ablation as well. It's natural. After a couple of weeks, as the heart calms and repairs what it can, those levels should return to a low.
Being lightheaded at any time when you have a formal diagnosis of an arrhythmia could be the arrhythmia returning, it could be bradycardia when in normal sinus rhythm (NSR) caused by metoprolol or another rate control medication (you've stopped the medication), or it could be a temporary hypotension and syncope caused by sudden movement or standing, perhaps by dysautonomia. This is only a series of guesses, not a diagnosis as I am not qualified to make such a diagnosis, nor do I have access to your records.

@gloaming Thank you so much for the reply it's helped relax me some. I been only eating slices of bread here and there and I'm fine same bread, I ate a turkey sandwich plain after my last visit in hospital but that was after I had a SVT episode so I don't know if I got lucky or if the turkey I buy is not good for me .I've been trying to see a neurologist as well to rule out any other possible problems but don't know how to go about getting one scheduled. I'm sorry to hear your cardioversion didn't work out for you I hope all is well and your healed asap. Not sure what kind of turkey to get other then like low sodium but I'm scared to experiment or try new things or food cant afford to go back to the hospital anymore this month sadly.

@nelson1996 In order to find exactly what sets your heart off, you'd have to methodically eliminate any suspected triggers and then introduce them again....BUT.....only one at a time. You'd start with your favourite bread, eat it over two/three/four days, and wait a couple of days with only that change to see if your heart breaks into SVT. Even then, it might just be 'idiopathic' in nature, meaning of unknown origin, but you'll think it's the bread because that was what you reintroduced to your diet. [ see 'post hoc, ergo propter hoc' fallacy. I did this, so the unpleasant event was because of this. Not necessarily so!] But, say your heart didn't go into SVT or AF, you've waited three days after eating the bread you enjoy, and next you introduce your fave turkey slices. Eat that each day for three/four days, and then let two/three more days pass. No SVT or AF? Try the mayo, or the pickle, or.....whatever you consume must be dealt with one item at a time, plus a couple of days for your heart to act up.
If none of those seems to bring on SVT or AF, now you're in a quandary. What else sets off my heart....dammit!? People eventually learn that sometimes their arrhythmia is indeed triggered, most often by stress or cardiomyopathy which has little or nothing to do with occasional dietary tweaks. But it can be alcohol, caffeine, too much calcium over a short period, too little rest, being to warm, uncomfortable, in pain....you'd be surprised to see all the things patients insist is what their trigger is/are.
Thanks for your sentiments about my cardioversions. They can work, sometimes for months and years, just not for me. So, I had to have a catheter ablation, two of them it happens, and those have had me in NSR for over 30 months now.

@gloaming Will try that out and hopefully can start to eat healthy again. And you had two ablations done? How did they turn out for you and what was that like an was it hard or stressful? How do you know if the ablation worked? If your healed Im happy to hear that I wouldnt wish this on nobody ever its so bad. I just hope the palpitations go away when I get my ablation along with the SVT cause it's gotten to the point I can't go get a job and I don't know how to go about getting disability just yet. I took a 2 mile walk yesterday and today I stood up from laying on the floor and BPM hit 111 or higher kinda worried. I was fine till a doctor from the hospital tried to put me on a calcium channel blocker they offered me 1 pill before leaving which I knew nothing about and went back and fourth I was wanting to try a new beta blocker nothing else but they kept insisting and dismissing me and my recommendations I got from my mother. Kinda sad that I was treated as such.

The first ablation failed. I knew in six days that the electrophysiologist had not blocked all the extra signals because I resumed a nasty AF and had to be placed on amiodarone, an anti-arrhythmic drug. I sent him an ECG recording by my Samsung Galaxy wristwatch, and he could immediately see that it was indeed a resumption of AF for me. He scheduled a repeat ablation seven months later, and that one worked. Note that, statistically across the field of electrophysiology, the failure rate of first (called 'index') ablations is 25%. So, only about 75% of all index ablations are successful, although there is some range between the best EPs and the average EP.
My HR (heart rate) would reach 140-180 when I was fibrillating. Before my second ablation, the one that worked, my HR would rise to 125-135 when walking, no matter how slowly I was going. It was not fun. Like you are, I was highly symptomatic and didn't feel well a lot of the time. My friends told me I looked grey.
If you have some SVT that comes and goes, a beta blocker or a calcium channel blocker should help to keep the rate low, and this is where a good cardiologist comes in, someone who knows you and who knows the science. If you have an adverse reaction to one kind, ask for the other. It may mean moving on to another, more sympathetic, cardiologist.

@gloaming Did they tell you not to take any medications before doing the ablation like beta blockers? They wouldnt prescribe me anything new at my heart doctors office just told me I need to just get the ablation done. Wish I could take the metoprolol again at this point it just makes me to light headed even at half dose, and the cardiazem/Dilt XR calcium channel blocker I swear messed me up badly or I just had so many SVT episodes in 4-6 days my hearts weakened. Scared to go for short walks cause all I can feel is my heart pounding out of my chest or feel my own heartbeat when I know I shouldnt. When I went for that 2 mile walk few days ago It took my heart rate atleast 30 minutes or an hour to go down from 90-100 bpm. I was hoping I didnt have to take beta blockers again after this ablation surgery. Do you think I need to be on them?

@nelson1996 I can't advise you about this because I'm not qualified and because I know nothing about you. What I can assure you is that your cardiologist is the heaviest hitter with the highest batting average on your team....so there's that. You can always tell him that the first sign of your drug, whether a drug you're used to or a newly prescribed one, not working well, you're going to stop using it immediately. There is often no need to 'wean' yourself off of a drug unless the monograph that the druggist gives you, or the doctor does, says not to discontinue it suddenly or without a doctor's say-so. I discontinued metoprolol cold turkey, but only when amiodarone was prescribed instead of it. So, it was a 1:1 drug swap, not cessation of a drug and taking nothing else.
As for instructions for your actions prior to any medical intervention, you should follow them. Not only are they definitive, and you don't know any better, but the person caring for you is relying on you to be a predictable patient in terms of your bloodwork, your readiness, and your having followed his/her instructions. IOW, for God's sake, don't confound the help you seek by doing 'your own thing.'
About medications and prophylaxis after an ablation: many/most EPs will ask you to take a limited quantity of a drug they know you have tolerated and say for how long to take it after your ablation. For some it's propafenone (Rhythmol), for some it's diltiazem, while for other's it's amiodarone, Flecainide, or just metoprolol. Look, none of us particularly likes having to reach for a pill vial and swallow one or two tablets twice or three times each day. But the EP knows what works for him across patients, and will routinely prescribe what he/she thinks is best to get her patients' hearts calm and healing in the five to six weeks prior to wearing the Holter monitor for the post-ablation assessment (usually at about the 10-12 week mark). If the EP does a good job and isolates the problem area in your left atrium, then you will have a good Holter monitor assessment. Ideally, the EP would ask you to taper off and to cease any meds except for the anti-coagulant about two weeks prior to the Holter. That way, the Holter is reading your 'true' heart condition rhythmically, and not a doctored-up rhythm kept under thumb by drugs...only.

Did you check the surgery they have for SVT? It was very minor surgery. When my pulse was 172 ans then next episode was 192 , I had the surgery. Some people find the surgery successfull. I had it . For awhile I was able to not take Metropol.. A few years later I am on low dose Metropol. I do not have any of the side effects that you mentioned.

For whatever it’s worth, I used Metoprolol sucessfully for 18-19 years. My heart rate stayed very reliably in the 50s.

A doctor in the Republic of Georgia introduced me to the use of coffee off the circadian rhythm cycle. At night when I woke up with heart symptoms, this doc prescribed a strange use of coffee to stimulate the heart at the wrong time in the sleep cycle. Oddly it worked for me. Low light or none plus coffee to stimulate the heart amounted to mixed signals to the brain. The darkness and normal sleep patterns say you should sleep now. But the stimulant in the coffee says to stay awake. For me, the result was peaceful sleep with good breathing. Not saying this would work for anybody else, but it could be worth a shot,

Coffee after midnight is not the same thing as coffee at dawn. Ask Balzac if you get the chance.

@gloaming Do you have to take that medication your on for the rest of your life? Even after a successful ablation?