Podcast
Questions and Answers
What is the primary mechanism by which metformin helps control blood sugar levels?
What is the primary mechanism by which metformin helps control blood sugar levels?
Which of the following risks is associated with combining metformin and intravenous (IV) contrast material?
Which of the following risks is associated with combining metformin and intravenous (IV) contrast material?
When should metformin be discontinued prior to a CT scan with contrast?
When should metformin be discontinued prior to a CT scan with contrast?
What is the classification of metformin?
What is the classification of metformin?
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What effect does metformin have on tissue responsiveness?
What effect does metformin have on tissue responsiveness?
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Study Notes
Metformin and CT Scans
- Metformin is a biguanide oral antidiabetic medication, often the first-line treatment for type 2 diabetes.
- Metformin does not directly lower blood glucose but reduces its production in the liver and increases tissue responsiveness to insulin.
- Combining metformin with IV contrast material for a CT scan increases the risk of renal toxicity and life-threatening lactic acidosis.
- Metformin should be held 1-2 days before a CT scan with contrast and for 48 hours afterward.
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Description
This quiz explores the important considerations for patients taking metformin before undergoing a CT scan with contrast. Understand the risks associated with renal toxicity and lactic acidosis, along with the recommended timing for holding metformin. Gain insights into safe practices for managing diabetes in relation to imaging studies.
