Study Design: A case of metformin-associated lactic acidosis after elective spinal surgery is reported.
Objective: To inform spinal surgeons of this potentially fatal side effect and make them aware that metformin should be stopped 48 hours before surgery.
Summary Of Background Data: Metformin is a commonly used oral hypoglycemic agent used in the treatment of non-insulin-dependent diabetes mellitus. A rare side effect of metformin is lactic acidosis, which has a 50% mortality rate. Risk factors for metformin-associated lactic acidosis include renal, hepatic, and cardiac failure. Two cases have been reported in postsurgical patients. No cases of this disorder have been reported after orthopedic procedures.
Methods: A patient who developed metformin-associated lactic acidosis after cervical spinal fusion is presented.
Results: Recognition of the cause and aggressive medical management led to resolution of the lactic acidosis. Subsequent surgery was uneventful when metformin was discontinued more than 48 hours before surgery.
Conclusion: Spinal surgeons should be aware of this preventable, potentially fatal side effect and stop metformin 48 hours before surgery.
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| http://dx.doi.org/10.1097/00007632-200211150-00019 | DOI Listing |
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