Hi Ashadds
just thought I'd add in some more data
ashadds;n871463 said:
I am still in the waiting room
I mentioned about monitoring my INR (and sent you some link to my blog on how and what I do). I thought it was perhaps useful to give you some additional information to use in your decision making process.
Many surgeons and cardiologists are not actually current with the latest situation in dealing with warfarin, instead they frequently rely on out dated and older stuff that "they learned once" and have not bothered becoming "up to date" with. After all, it is not their actual area of interest, cardiac surgery or cardiac anatomy is their area of interest.
So I'd point you to the outcomes of the GELIA study
http://eurheartjsupp.oxfordjournals..../3/suppl_Q/Q33
Results In total, 2024 patients with aortic valves were included in the German Experience with Low Intensity Anticoagulation (GELIA) study, with 672, 677 and 675 patients in strata A, B and C, respectively. The percentages of patients who achieved an INR within their target range in each stratum are as follows: 43·3% in stratum A; 62·8% in stratum B; and 75·9% in stratum C. Patients who self-managed their anticoagulation therapy achieved an INR within their target range more often than did those who were managed by conventional methods. No statistically significant differences in adverse event rates were identified between strata.
Conclusion A target INR range of 2·0–3·5 is preferable to the usual 3·0–4·5 range in reducing the number of severe bleeding complications in patients implanted with a St. Jude Medical prosthesis. Self-management of INR may result in better achievement of target INR levels.
Further from that study the following observation was made:
As > 90% of INR measurements during the entire follow-up period were within the therapeutic range of INR 2.0 to 4.5, which is the lowest erratic INR ever published...,we conclude that low-intensity anticoagulation with a target INR of 2.0 to 3.5 is safe for patients with SJM prostheses in the aortic position as well as the mitral position.
making a good case to support that "
stay in range" = "
stay safe"
So ask is your surgeon and or cardiologist aware of this?
So with that information in mind here is my data for this year: [IMG2=JSON]{"data-align":"none","data-size":"full","src":"https:\/\/c1.staticflickr.com\/1\/656\/32000655005_d5bcba8da1_o.jpg"}[/IMG2]
My data shows that I was in range 91% of the time in that year (92% the year before and 91% the year before that) ... so with a little bit of intelligence and care its totally doable.
During that time I ate and drank (alcohol) as I pleased ... Lamb Saag, Rogan Josh, roast Moose, many fish, rice, spices ... you name it I happen to like Spinach.
Next lets look at the "safe ranges". The following study is illuminating reading:
http://jamanetwork.com/journals/jama...article/415179
Methods We evaluated all patients visiting the Leiden Anticoagulation Clinic with mechanical heart valve prostheses, atrial fibrillation, or myocardial infarction from 1994 to 1998. Untoward events were major thromboembolism and major hemorrhage. We calculated intensity-specific incidence rates of untoward events to assess the optimal intensity per indication of treatment. We enrolled 4202 patients for a total of 7788 patient-years.
Results A total of 3226 hospital admissions were reported, 306 owing to an untoward event. Incidence rates of untoward events were around 4% per year for all indications: 4.3 (95% confidence interval [CI], 3.1-5.6) for patients with mechanical heart valve prostheses, 4.3 (95% CI, 3.7-5.1) for patients with atrial fibrillation, and 3.6 per year (95% CI, 3.0-4.4) for patients treated after a myocardial infarction. The optimal intensity of anticoagulation for patients with mechanical heart valve prostheses was an international normalized ratio (INR) of 2.5 to 2.9; for patients with atrial fibrillation, an INR of 3.0 to 3.4; and for patients after myocardial infarction, an INR of 3.5 to 3.9.
The following figure (from that study) makes it clear that between INR = 2 and INR even as high 5 the number of bleed or thrombosis events was very very low
[IMG2=JSON]{"data-align":"none","data-size":"full","src":"https:\/\/c2.staticflickr.com\/4\/3868\/14626794599_442e809525_o.jpg"}[/IMG2]
which shows that I'm well within the safe range with respect to my INR causing a problem
Now, looking again at my 2016 chart you can see that there were a number of events where my INR went (without explanation) over the 3 that I arbitarily use as my upper limit. You can see that I took small actions by observing that the dose was dropped a very small amount to account for the increase in INR.
The evidence is sound that
if you keep yourself within range that you are safe.
So can you keep yourself in range? The answer is yes, easily especially if you apply some of your thought and a little bit of effort. We posess well priced tools now (such as the Coagucheck XS) which gives you the ability to test your INR as you wish. I normally test weekly, but if an event that seems like its trending too high, or trending too low occurs then I monitor mid week as well as my weekly testing. If at mid week (for instance) the trend in INR out of bounds is not correcting itself (which it can do) I then take a bit of action and adjust my dose in small amounts (as you can see on that graph).
If you want to be, you can be a strong and reliable advocate and participant in your own health. This is something which you can not do if you select a tissue valve ... for then you are just bound by statistics and good luck.
Lastly I will link one more article from my blog:
http://cjeastwd.blogspot.com/2014/01/heart-valve-information-for-choices.html
have a read of that article and think about you and what you want ... as I've already said, a homograft is not a bad choice ... if nothing else it buys you time to think and to examine things.
Ask yourself honestly : which sort of person are you? One who wants control of your destiny or one who is controlled by it?
Best Wishes and Happy New Year