Warfarinking;n858517 said:
I had my aortic valve replaced and I just know it's coming from St Jude
well its a modern bileaflet (not tilting disk) valve which do naturally resist thrombus ... so to me (going back to my risk model) that makes the traffic density low so chances of getting hit crossing the road are lower.
I mean that from what I see the chances of a thrombus are lower.
I had not gone outside my own experience before this, and that reading that I posted was new to me. So in reading the "current thought" it seems like there is a foot either side of the fence. As mentioned in the parts I quoted the risk they identified in going off AC was that a valve leaf thrombus was a possibility , but they seem to identify the bjork shelly tilting disk.
I can understand your anxious feelings, but as I said earlier I'd ask them
to explain why you are not on heparin and consider that maybe 48 hours after surgery would be a good time to commence low does heparin as a prophylaxis to thromboembolism.
http://www.uptodate.com/contents/per...anticoagulants
Use of bridging preoperatively – We generally reserve bridging for individuals considered at very high or high risk of thromboembolism (eg, recent stroke, mechanical heart valve, CHADS2 score of 5 or 6) if they require interruption of warfarin.
which to me would suggest that at the very least, after surgery and after they can identify there are no un-identified bleeders, you should consider heparin (which is what bridging refers to)
This document by the Australian State NSW (I live in Queensland) identifies the newer mechanicals as "low risk" of thromboembolism.
Ultimately your surgeon should know more about this than us (me).
good reading also here:
http://circ.ahajournals.org/content/126/4/486.long
Low-risk patients not requiring bridging therapy include the following: AF with CHADS-2 score ≤2 and no previous thromboembolism or intracardiac thrombus; bileaflet mechanical aortic valve prosthesis in sinus rhythm with no previous thromboembolism;
seems in agreement that you're low risk ... I'd still ask my questions
Anyway try to relax and get some rest before surgery, eventually we have to trust our team. I'm not sure if I'm helping or increasing your anxiety ...
Best Wishes