Can a coronary angiography be performed with a creatinine level of 200 μmol/L?

　　A creatinine level of 200 µmol/L generally contraindicates cardiac angiography. The specific analysis is as follows:

　　Creatinine is one of the metabolic byproducts of human muscle, and blood creatinine levels are commonly used to assess kidney function. Elevated creatinine levels beyond the normal range suggest possible kidney impairment. A creatinine level of 200 µmol/L is significantly higher than the normal range, indicating substantial kidney damage. Cardiac angiography requires the injection of contrast agents, which are filtered and excreted through the kidneys. If kidney function is impaired, the contrast agent may accumulate in the body, increasing the metabolic burden on the kidneys. In severe cases, this can worsen kidney injury and negatively affect the patient's health. Therefore, patients with a creatinine level of 200 µmol/L are generally not suitable candidates for cardiac angiography.

　　Cardiac angiography should be carefully considered. Typically, doctors will evaluate the patient's kidney function and decide whether to proceed with the procedure based on the individual's specific clinical condition.