carolinemc
Well-known member
My lab that uses that, when I went to 100, I had to go to the regular lab in the hospital and get a draw from the arm. My reading in the lab was 4.0. The other lab concurred the same, and we dosed accordingly.
Highest INR you have heard of or experienced?
- Thread starter thomas999
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You had an INR of 100? 10,0? Was it the Coag-Sense that gave you that high INR? (IIRC, the Coag-Sense won't give a reading above 8.0, or maybe 9,0)
thomas999
Well-known member
It was actually over 100, probably 120. This was measured by the local hospital lab, and in the emergency room at the hospital. I remember talking to a nurse who said that's impossible because it can't go over 100. I don't know why she would think it stops at 100, but the PT value peaked at over 12. I was starting to bleed out from all soft tissue in the body. I often wonder if there was bleeding in the brain, but I am no crazier than I was before, at least that's what I think, haha.
pellicle
Professional Dingbat, Guru and Merkintologist
Lisa from LJ
Well-known member
I think your numbers are backwards. PT number is significantly higher than INR number. A PT of 100 would be an INR of over 15. An INR of 100 would be a PT in the 400s.
Lisa -- this makes a lot more sense than an INR of 100. And, FWIW, calculating the INR from the PT depends on the reagent value. The PT is divided by the reagent value to determine the INR.
FWIW - years ago, I was told by a clinic (probably mishandled my sample) that my INR was 7.1. I was careful for a few days, just in case the value was right My continued regular dose brought my INR back within range. I suspect that the lab was wrong - or the sample was mishandled so badly that an erroneous result was obtained.
(If the hospital got an INR of 100, it would have/should have, re-run the test immediately.
FWIW - years ago, I was told by a clinic (probably mishandled my sample) that my INR was 7.1. I was careful for a few days, just in case the value was right My continued regular dose brought my INR back within range. I suspect that the lab was wrong - or the sample was mishandled so badly that an erroneous result was obtained.
(If the hospital got an INR of 100, it would have/should have, re-run the test immediately.
Yeah, I was just reading about the interaction with Amiodarone and Warfarin. At my husband's dosage he should be taking a 30% lower dose of Warfarin due to the interaction. So when he comes off of it, next month if he stays in normal sinus rhythm for that period, then they will have to completely revamp his dosage. Right now he is on 5mg two days a week and 2.5 the other 5. His inr spiked up to 4.8 in the second week out of the hospital.
pellicle
Professional Dingbat, Guru and Merkintologist
I think this is perhaps not the right way to look at it. Yes there is an interaction BUT for as long as you're on it you just need to think one way:
the intention to treat with warfarin is INR
nothing more and nothing less ... the dose is only the bus number you take to get to that destination. That's all there is to it really ... keep within range.
This decision flow chart is from this post
https://www.valvereplacement.org/threads/complications-post-surgery.889636/post-934334
I think the information there about Paracetamol (Tylenol is one brand) is also beneficial knowledge too.
Best Wishes
Lisa from LJ
Well-known member
You're correct about the reagent. I used a calculator with an average value, but didn't use exact values for that very reason.
Lisa from LJ
Well-known member
True. I'm not sure it's even physically possible to have an INR of 100 without bleeding out from all parts of the body.
Yeah, I get that. LOL The literature does say exactly what I said though. That at a dosage of 200 for Amiodarone the average person requires a dosage of 30% lower than the norm of Warfarin to sustain an in range inr measurement. For him how this effected him is that when they gave him the normal dosage of 5mg of Warfarin his inr level was quite far outside the "therapeutic range" they have set for him. In looking at his current dosage, it is actually about 30% under the original amount he was told to take. We will see what his level is at when he has his next reading. For some reason they are waiting two weeks between the last one and this next one.I think this is perhaps not the right way to look at it. Yes there is an interaction BUT for as long as you're on it you just need to think one way:
the intention to treat with warfarin is INR
nothing more and nothing less ... the dose is only the bus number you take to get to that destination. That's all there is to it really ... keep within range.
This decision flow chart is from this post
https://www.valvereplacement.org/threads/complications-post-surgery.889636/post-934334
I think the information there about Paracetamol (Tylenol is one brand) is also beneficial knowledge too.
Best Wishes
Since his afib hasn't come back, at least according to the readings we have been doing at home, since he went into normal sinus rhythm I will be interested to see whether they automatically up his dosage when they discontinue the Amiodarone. When he went to the doctor they gave him another wearable monitor, but after two days it fell off. His electro cardiologist was waiting to make sure his afib is sustained before taking him off the med, but I think he wanted the 24 hour readings that the wearable would provide rather than hubby manually taking ekg readings throughout his day since my husband doesn't seem to feel being in afib so can't take it when he might be having an episode.
Anyway, this will all be much simpler when he has the home monitoring set up. Less than 6 weeks to go until he qualifies to monitor at home.
pellicle
Professional Dingbat, Guru and Merkintologist
- be careful about what you are calling "the literature" (publications by hospitals as guidelines do not count as "the literature")
- these are as alluded to above "guidelines" and the definitive thing is INR
pellicle
Professional Dingbat, Guru and Merkintologist
@SatoriFound
In academic terms, this first document (Managing Variability in dosing Warfarin) does not count as "the literature" but he cites a lot of "the literature. The Author.
This second one "Exaggerated Initial Response Warfarin Following Heart Valve Replacement" does count as part of the literature.
HTH
In academic terms, this first document (Managing Variability in dosing Warfarin) does not count as "the literature" but he cites a lot of "the literature. The Author.
This second one "Exaggerated Initial Response Warfarin Following Heart Valve Replacement" does count as part of the literature.
HTH
I am referring to the actual studies. In my line of work I read all kinds of different types of articles on new technology, lessons learned, theory.... I just thought others would do that too. LOL
pellicle
Professional Dingbat, Guru and Merkintologist
I suspect that you'll find few professionals do ... in every area
Lisa from LJ
Well-known member
You are correct. Many people do read all kinds of articles, seeking to determine what is true, what works for the average patient, and what works for them personally. If the literature says that a 30% dosage decrease works in the average patient, it is a good place to start. He may or may not be the average patient, but you won't know until you try, and it will more than likely be close to where he needs to be.
There are some on this site who think they know better than others and while they might be quite educated, in truth, if you know what works for one Warfarin patient, that's all you know - what works for one Warfarin patient. It will be important for your husband to learn what works for him. Then he can work better with the women at the Warfarin clinic and they will begin to trust that he has a good understanding of the drug and is the expert for his body. After 26 years, I rarely need adjustments, but when I do, I tell them what I'm going to do and they listen to my thought process. They have yet to disagree with me.
I started a new Cholesterol medication about a year ago - Nexlizet - that some literature says has a "minor interaction" with Warfarin and other literature says it's a "moderate interaction". For me, it caused my INR to go up significantly within a couple of weeks. Using the recommended 10% adjustment, it took a few months to dial in the sweet spot, but I went from 47 mg per week to 33.25 mg per week, which is half of a 7.5 plus a 1 each day. I consider rounding up the 4.75 to 5 per day so I only take 1 pill, but the 4.75 is working so well that I don't want to mess with it!
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I personally prefer to calculate by daily dose, rather than weekly total. If it's possible to do daily dosing the same every day, this would avoid minor swings that happen depending on the day you test your INR.
It's good that you found a way to hit a daily dose of 4.75.
It's good that you found a way to hit a daily dose of 4.75.
Lisa from LJ
Well-known member
That's what I do. I was taking more two days that others and as long as the doses are close, it works. Once I got in range, I balanced it out.
thomas999
Well-known member
Yes, I seem to mix them up all the time. It was my INR that was 12.6 that put me into the emergency room. I was coughing up blood, and blood was almost seeping out of the lower parts of my legs. My legs were all blotchy red.
Windfinder
Active member
Pellicle,
I was reading this older thread and i saw you mentioned Spanish Mandarins”, i knew about grapefruit (this fruit interacts with so many things) but your mention of the mandarins got me thinking. I live in Spain for a good part of the year (got here a couple weeks ago) my family always buy them and I used to eat many and was ready to do so..until now, can you provide more info? I couldn’t find in the link you had attached but I may have missed it.
Thanks
