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A dose of 3000 mgl in adults and 2400 mgl in children is sufficient for most myelographic procedures. Doses above these levels may result in an increased frequency and severity of adverse reactions including seizures. However, in myelography, even use of a recommended dose can produce mental aberrations tantamount to overdosage, if incorrect management of the patient during or immediately following the procedure permits inadvertent early intracranial entry of a large portion of the medium.

Treatment of an overdose of an injectable radiopaque contrast medium is directed toward the support of all vital functions, and prompt institution of symptomatic therapy.


Intrathecal administration of corticosteroids with iopamidol is contraindicated. Because of overdosage considerations, immediate repeat myelography in the event of technical failure is contraindicated (see interval recommendation under DOSAGE AND ADMINISTRATION). Myelography should not be performed in the presence of significant local or systemic infection where bacteremia is likely.

Last reviewed on RxList: 8/28/2012
This monograph has been modified to include the generic and brand name in many instances.


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