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Overdosage with INOmax will be manifest by elevations in methemoglobin and pulmonary toxicities associated with inspired NO2. Elevated NO2 may cause acute lung injury. Elevations in methemoglobin reduce the oxygen delivery capacity of the circulation. In clinical studies, NO2 levels > 3 ppm or methemoglobin levels > 7% were treated by reducing the dose of, or discontinuing, INOmax.
Methemoglobinemia that does not resolve after reduction or discontinuation of therapy can be treated with intravenous vitamin C, intravenous methylene blue, or blood transfusion, based upon the clinical situation.
INOmax is contraindicated in the treatment of neonates known to be dependent on right-to-left shunting of blood.
Last reviewed on RxList: 3/20/2013
This monograph has been modified to include the generic and brand name in many instances.
Additional Inomax Information
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