A patient of rheumatic heart disease with mitral stenosis and atrial fibrillation is on oral warfarin. On one OPD visit, his INR is found to be 6. What is the action to be taken?
Stop warfarin, and review
Stop wairfarin, and administer fresh frozen plasma
Stop warfarin, and administer intramuscular vitamin K
Stop warfarin, and administer intramuscular vitamin K