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INR of 1.69 is not dangerous / but is not likely to be effective too in MVR.
Blood thinners - especially acitrom
- are like double edged swords / bleed in excess; ineffective when less - one has to be very careful.
And the combination with ant-platelet agents is even more dangerous - THEY SHOULD NOT BE MANIPULATED BY THE PATIENT - without the doctor's expert opinion.
Every modification must be approved by your physician
Wishing speedy recovery