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health advisory Hospital Doctor Yu 2007-11-8 19:08:08

Answers:

I dont understand your question. Metformin is a drug used in control of type 2 diabetes and in PCOS, I cant see a link to dyes and surgery with it.

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I think alot of medications are held prior to tests and surgeries.patients are placed NPO (nothing my mouth) to keep stomachs empty to prevent patients from aspirating. If sedation is used for these procedures, the patient is at high risk for nausea and vomiting afterwards. Metformin would especially be held to prevent hypoglycemia (drop in blood sugar) during the time the patient can't eat or drink.

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Because during testing and surgery your blood sugar may fall dangerously low due to being with out food prior to these procedures. During surgery the anesthesiologist will monitor your blood glucose and administer insulin if needed to lower your glucose levels.

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Metformin (Glucophage) is an oral hypoglycemic medication - it helps reduce blood sugar in type 2 diabetics.

For radiologic dyes, it is stopped prior to (and held for 48 hours after) dye injection because of the dye's effect on the kidneys. Metformin is cleared by the kidneys, and if the dye messes up kidney function, metformin will not be properly eliminated.

Pre-operatively, we ask that patients not take oral hypoglycemic medications to avoid hypoglycemia from not eating. (Not eating is important to prevent aspiration - inhaling your vomit - during anesthesia) If blood sugar goes too low, severe complications can result. If it is high, we can give a little insulin to bring it down.

Hope that helps answer your question!

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I know I had ambulatory surgery and i was told to discontinue it when I had certain tests and porcedures. For the test I had (hysterosalpingogram) I was told to discontinue it b/c there is a side effect of kidney failure associated with that procedure and unlike other drugs that are process through the liver, metformin is processed through the kidneys.

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