Iopamidol (370mg) is a non-ionic, low-osmolar, iodinated contrast medium used for intravascular and intrathecal administration in diagnostic imaging. It provides excellent radiographic contrast with a favorable safety profile due to its low osmolality and non-ionic nature, reducing the risk of adverse reactions compared to older ionic agents. The 370mg iodine/mL concentration is a standard high-concentration formulation used for procedures requiring dense opacification.
Adult: Dose is highly variable and depends on type of examination, patient size, and imaging equipment. General IV range: 50-150 mL per procedure. For CT: Typically 50-100 mL (18.5-37g iodine) injected IV. For angiography: Varies by vessel, often 5-40 mL per injection.
Note: For intravascular use: Administer as a bolus injection or controlled infusion using a power injector. Must be at room temperature. Use strict aseptic technique. Do not mix with other drugs in the same syringe. Flush IV line with normal saline before and after administration. Patient must be well-hydrated. Continuous monitoring of vital signs during and after injection is mandatory.
Iopamidol is a radiopaque contrast agent. Its efficacy is based on the physical property of iodine (atomic number 53) to absorb X-rays, thereby creating a density difference between tissues/fluid spaces containing the agent and surrounding structures. This difference is visualized on radiographic images (X-ray, CT scan).
Pregnancy: Category B (US FDA). Iodinated contrast crosses the placenta and enters fetal circulation. Use only if clearly needed and potential benefit justifies potential risk to the fetus. Fetal thyroid function may be affected after 12 weeks gestation.
Driving: Patients may experience dizziness or vasovagal reactions. They should be advised not to drive or operate machinery until fully recovered, typically for 12-24 hours post-procedure.
| Metformin | Risk of lactic acidosis if contrast-induced nephropathy occurs. Must be withheld before and after the procedure as per protocol. | High |
| Interleukin-2 | Increased risk of delayed hypersensitivity reactions. | Moderate |
| Beta-blockers | May mask tachycardia as a sign of anaphylaxis and make treatment of reactions more difficult. | Moderate |
| NSAIDs (e.g., Ibuprofen, Diclofenac) | May increase the risk of contrast-induced nephropathy, especially in pre-existing renal impairment. | Moderate |
| Diuretics (e.g., Furosemide) | May potentiate dehydration and increase risk of nephrotoxicity. | Moderate |