This schedule is designed to ensure adequate therapy during acute episodes, while minimizing the risk of overdosage in chronic cases.
In cerebral edema, Dexamethasone Sodium Phosphate injection, USP is generally administered initially in a dosage of 10 mg intravenously followed by 4 mg every six hours intramuscularly until the symptoms of cerebral edema subside. Response is usually noted within 12 to 24 hours and dosage may be reduced after two to four days and gradually discontinued over a period of five to seven days. For palliative management of patients with recurrent or inoperable brain tumors, maintenance therapy with either Dexamethasone Sodium Phosphate injection, USP or dexamethasone tablets in a dosage of 2 mg two or three times daily may be effective.
Thyroid storm is a life-threatening condition of the hyperthyroid state. 26 It most commonly occurs in patients with Graves' disease but may also occur in those with multinodular goiter or toxic adenoma. 27 It is treated by correcting the hyperthyroidism and treating the precipitating events. 26 Correction of the hyperthyroid state involves using drugs such as propylthiouracil or methimazole (Tapazole), beta blockers or corticosteroids, which decrease the peripheral effects of thyroid hormone and the conversion of thyroxine (T 4 ) to the more potent triiodothyronine (T 3 ). 22 , 26 Dexamethasone can be used for that purpose, at a dosage of 2 mg intravenously every six hours, and can eventually can be switched to an oral dosage of 2 mg every six hours. 28