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any nurses have SVT or IST?



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Feb 26, 2009 08:10 PM

any nurses have SVT or IST?


Hi there,

I had an episode of possible SVT in September while I was working----I went to the ER with a rate of 150's and up at times. The doctors thought after vagal maneuvers I was in A flutter. My K+ was also very low at 2.4 for unknown reasons. After Adenosine and cardioversion...nothing worked. Apparently I was in "sinus tach" the whole time. I was then placed on IV amiodarone and sent to ICU overnight. Since then I have been taking Toprol XL 100mg a day for this rapis rate of unknown orgin. I have seen an EP doc. and even they said it's sinus tach....but in the 150's??? and for so long?? have any of you experienced cardiac issues? There is a thing called Inappropriate sinus tachycardia...supposedly it is seen in female healthcare workers...HMMMMMM???

If anyone else has SVT or IST please let me know your story and how you deal at work.


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5 Comments
No. 1
from jla623
Old Mar 05, 2009, 10:03 AM

Default Re: any nurses have SVT or IST?
I haven't been diagnosed yet, but my EP is pretty sure it's ISP. I have big time problems with it pretty much every day. My heart rate gets in the 140s-160s on a daily basis. I'm only taking 50mg of Toprol XL though. I get really dizzy and short of breath. I am still waiting to see my options of how to deal with it because right now it is very difficult. I have a lot of trouble in my 12 hour clinicals and sometimes I just have to squat down on the floor to catch my breath. I have never gone to the ER because of it.

Is there anything besides beta blockers that helps? Mine help some, but I still have problems with it. How do you deal with it?
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No. 2
Old Mar 05, 2009, 12:27 PM

Default Re: any nurses have SVT or IST?
Hi there,

I am on 100mg of Toprol Xl. I was on 50 and still had breakthrough tachycardia. It took awhile to adjust to the beta blockers, but now I am fine. I was really tired at first. You need to drink more fluids and check your BP frequently if your dizzy often. I can tell once I feel dizzy to increase my fluids. Have you worn a Holter? or an event monitor? I have had episodes while in telemetry and they told me it's "only sinus tach" kids of odd to me to get sinus tach for no reason up to 150's just sitting still and not have it be SVT.
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No. 3
from jla623
Old Mar 05, 2009, 01:12 PM
Updated Mar 05, 2009 at 01:48 PM by jla623

Default Re: any nurses have SVT or IST?
Originally Posted by travelnurse28 View Post
Hi there,

I am on 100mg of Toprol Xl. I was on 50 and still had breakthrough tachycardia. It took awhile to adjust to the beta blockers, but now I am fine. I was really tired at first. You need to drink more fluids and check your BP frequently if your dizzy often. I can tell once I feel dizzy to increase my fluids. Have you worn a Holter? or an event monitor? I have had episodes while in telemetry and they told me it's "only sinus tach" kids of odd to me to get sinus tach for no reason up to 150's just sitting still and not have it be SVT.
I am thinking 100mg is going to be better for me as well. My EP told me to drink 3L of water a day and increase my salt intake, but that honestly hasn't helped at all. I have worn an event monior and Holter monitor. 99 % of what was captured was NSR. I notice mine the most when I'm standing, but it still goes on when I'm sitting or laying down. My EP said it definitely wasn't SVT.

Did they make you do a 24 hour urine? I know they are checking for catecholamines and a few other things.

I think it's so strange that IST is common with female health care workers. I wonder why that is. I read something that said that nurses are more likely not to dismiss their symptoms. My PCP was very dismissive of my problems, so I kept pushing forward to a cardiologist and electrophysiologist. I'm glad I did because my PCP thought I was just very deconditioned (which isn't true because I'm in good shape).
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No. 4
Old Mar 07, 2009, 07:39 AM

Default Re: any nurses have SVT or IST?
I did have to do 24 hr urine...I also had chatecholamines drawn as well as TSH--and renin, aldosterone...they were all normal. They thought it could be a pheochromocytoma...but I had not HTN so probably not. It wasn't that. 9Thank God) who knows what caused my sudden symptoms. I just hope it doesn't come back! Toprol seems to help. I'm afaid to go off of it honestly!
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No. 5
from NeoNurseTX
Old Mar 20, 2009, 03:30 AM

Default Re: any nurses have SVT or IST?
I'm pretty sure I have IST even though I've done several EKGs, exercise stress test, echo, blood work, holter monitoring..and whatever else and it was inconclusive. My resting heart rate when I'm awake is usually in the 110s-120s. When I work out, it shoots up to 180s within the first minute. It used to go over 200 but I haven't seen that in a while. During my EST, the cardiologist said I'm fine as long as it doesn't go over 200..and it went to 199 during the test. Hmmm. Right. The only symptom I don't really have is fatigue from it and exercise intolerance (unless I'm running then I poop out FAST). It's intermittent though.. it used to be that high all the time but the past year or so it seems to stay in the 90s and go up to 180 w/ cardio exercise. I definitely still get palpitations and when I stand up, I get light headed a lot. It's odd...I'm on nothing for it.
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