Why is Metformin Held Before Angiogram?
Angiography, a diagnostic procedure that involves injecting a contrast dye into the blood vessels to visualize them using X-rays, is a common procedure used to detect blockages or narrowing in the arteries. Metformin, a widely prescribed medication for type 2 diabetes, is often held before the angiogram procedure. This raises the question: why is metformin held before angiogram?
The primary reason for holding metformin before an angiogram is to minimize the risk of lactic acidosis, a rare but serious complication. Lactic acidosis is a condition where lactic acid builds up in the body, leading to a decrease in blood pH. It can occur when the body is unable to produce enough energy, usually due to a lack of oxygen.
Since metformin works by inhibiting the production of glucose in the liver, it can cause a reduction in the body’s energy supply. This, in turn, can lead to a decrease in oxygen utilization, increasing the risk of lactic acidosis during the angiogram procedure. Therefore, holding metformin before the procedure is considered a preventive measure to reduce this risk.
Another reason for holding metformin before an angiogram is to ensure that the patient’s blood sugar levels are well-controlled. Angiography involves the use of contrast dye, which can cause an increase in blood sugar levels. By holding metformin, healthcare providers can closely monitor and manage the patient’s blood sugar levels before, during, and after the procedure.
Furthermore, metformin has been found to affect renal function in some cases. During angiography, contrast dye can cause a temporary decrease in kidney function, which can be exacerbated by the use of metformin. By holding metformin before the procedure, healthcare providers can minimize the potential impact on kidney function and reduce the risk of kidney injury.
In addition to these reasons, holding metformin before an angiogram also allows healthcare providers to assess the patient’s response to the medication and make any necessary adjustments. This is particularly important for patients who have a history of adverse reactions to metformin or other diabetes medications.
In conclusion, metformin is held before an angiogram to minimize the risk of lactic acidosis, ensure well-controlled blood sugar levels, reduce the potential impact on kidney function, and assess the patient’s response to the medication. By taking these precautions, healthcare providers can ensure the safety and efficacy of the angiography procedure for their patients.
