Drug Guide
Ioversol
Classification
Therapeutic: Contrast Agent, Diagnostic
Pharmacological: Nonionic, iodinated radiopaque contrast agent
FDA Approved Indications
- X-ray imaging of vascular system and body cavities where contrast enhancement is needed
Mechanism of Action
Ioversol is an iodinated contrast agent that increases the attenuation of X-rays in blood vessels and tissues, enhancing contrast in radiographic images.
Dosage and Administration
Adult: Dosage varies based on procedure; generally 50-150 mL administered via IV, with volume adjusted based on body habitus and imaging requirements.
Pediatric: Dosing is weight-based; consult specific protocols. Usually 1-2 mL/kg as a single dose.
Geriatric: Adjusted based on renal function; use caution in elderly patients due to risk of renal impairment.
Renal Impairment: Reduce dose and ensure adequate hydration; avoid in severe renal impairment if possible.
Hepatic Impairment: No specific adjustments, but caution advised.
Pharmacokinetics
Absorption: Not absorbed orally; administered intravenously.
Distribution: Rapidly distributes in extracellular fluid.
Metabolism: Excreted largely unchanged in urine.
Excretion: Primarily renal excretion.
Half Life: Approximately 2 hours in patients with normal renal function.
Contraindications
- Known allergy to iodine or iodinated contrast media
- History of severe hypersensitivity reactions to contrast agents
Precautions
- Patients with renal impairment, asthma, or allergies to other contrast media should be carefully evaluated before administration.
- Pre-medication may be considered in at-risk patients.
Adverse Reactions - Common
- Nausea (Frequently)
- Warm feeling or flushing (Common)
- Pruritus or rash (Uncommon)
Adverse Reactions - Serious
- Anaphylactic reactions (Rare)
- Contrast-induced nephropathy (CIN) (Rare but serious)
Drug-Drug Interactions
- Other nephrotoxic drugs (e.g., aminoglycosides, NSAIDs) increase risk of renal impairment
Drug-Food Interactions
N/ADrug-Herb Interactions
N/ANursing Implications
Assessment: Assess for allergy history, renal function, and hydration status before administration.
Diagnoses:
- Risk for allergic reaction
- Risk for renal impairment
Implementation: Ensure proper hydration, monitor vital signs, and observe for allergic or adverse reactions during and after administration.
Evaluation: Monitor renal function post-procedure, reassess for allergic symptoms.
Patient/Family Teaching
- Inform about possible sensations during injection (warmth, flushing).
- Advise to report any allergic symptoms immediately.
- Emphasize importance of hydration to reduce renal risk.
Special Considerations
Black Box Warnings:
- Risk of anaphylaxis and hypersensitivity reactions.
- Potential for contrast-induced nephropathy (CIN).
Genetic Factors: No specific genetic concerns identified.
Lab Test Interference: May interfere with thyroid function tests due to iodine content.
Overdose Management
Signs/Symptoms: Signs of hypersensitivity, renal impairment, or adverse reactions.
Treatment: Supportive care, treat allergic reactions with antihistamines or epinephrine, ensure adequate hydration, and renal support if necessary.
Storage and Handling
Storage: Store at controlled room temperature, 20°C to 25°C (68°F to 77°F).
Stability: Stable until expiration date when stored properly.