Igor:
My advise to anyone on coumadin is NEVER, NEVER, NEVER stop your medication unless specifically directed by your cardiologist AND question the cardiologist about the reasons for discontinuation and about what other measures should be taken to safegard you while off Coumadin.
My husband has been on coumadin since October 1990. In that time, he has had many crowns, a root canal, numerous teeth cleanings, and an extraction...and never has his coumadin been discontinued. I nearly go into a rage when I hear dentists or hygenists tell patients that they must go off coumadin. In April this year, a hygenist told my husband that she would not clean his teeth unless he stopped his medication for two days. And, she said that this was policy of the American Dental Association. SHE IS WRONG. I took her a paper from the "resident" expert on coumadin on this board, Al Lodwick. In part it read:
"The January 2000 edition of the Journal of the American Dental Association published a study of 950 people who had 2,400 dental procedures done. NONE of these people stopped their warfarin. There were only 12 incidents (about 1% of the time) where anything more than holding a pad with slight pressure was required to stop bleeding. In these 12 incidents, only 3 times was the INR at or below the therapeutic level. The author also studied 526 people who stopped their warfarin for 575 dental procedures. There were 5 serious complications (about 1% of the time. HOWEVER 4 OF THESE 5 PATIENTS DIED."
Among the conclusions of the study were:
...Serious complications, including death, were 3 times more likely
to occurr if warfarin was stopped then if it was continued."
The article quoted is: Wahl, MJ. Myths of Dental Surgery in Patients Receiving Anticoagulant Therapy. Journal of the American Dental Association, January 2000, p. 77-81.
Igor, I would suggest that you go to Al Lodwick's site, warfarinfo.com, and make copies of the section on "Dental Procedures While on Warfarin" and the information on warfarin and dental procedures found in the Frequently Asked Questions section for your dentist and hygenist.
Hope you find this helpful.