 [ Symptoms ] i am having a surgery and i have thrush will this stop my operation [ Disease ] the answer likely depends on the type of surgery you are having you definitely should disclose this episode of thrush to the surgeon as soon as possible he or she will make the decision whether or not to proceed with the surgery or to postpone it thrush refers to a yeast infection of the mouth it is caused by a fungus called candida in general thrush is not considered a serious condition it can easily be treated with an anti fungal mouth rinse however candida can be dangerous if it gets into a surgical wound it is unlikely that the yeast could travel from your mouth to an incision in say your foot but on the other hand if you are having an endoscopic procedure where a surgeon puts a flexible scope down your esophagus then it might be easier to transfer the yeast to a surgical wound in your stomach for example so as you can see there is no one answer to your question your best bet is to notify your surgeon right away about the thrush and see what she says wishing you well