This administration, given from one day to one week before delivery, has been associated with low birth weight, although not with increased rates of neonatal death.Dexamethasone has also been used during pregnancy as an off-label prenatal treatment for the symptoms of congenital adrenal hyperplasia (CAH) in female babies. CAH causes a variety of physical abnormalities, notably ambiguous genitalia. Early prenatal CAH treatment has been shown to reduce some CAH symptoms, but it does not treat the underlying congenital disorder. This use is controversial: it is inadequately studied, only around one in ten of the fetuses of women treated are at risk of the condition, and serious adverse events have been documented. Experimental use of dexamethasone in pregnancy for fetal CAH treatment was discontinued in Sweden when one in five cases had adverse events.A small clinical trial found long-term effects on verbal working memory among the small group of children treated prenatally, but the small number of test subjects means the study cannot be considered definitive. High-altitude illnesses
Dexamethasone is used in the treatment of high-altitude cerebral edema (HACE), as well as high-altitude pulmonary edema (HAPE). It is commonly carried on mountain-climbing expeditions to help climbers deal with complications of altitude sickness. Nausea and vomiting
Intravenous dexamethasone is effective for prevention of nausea and vomiting in people who had surgery and whose post-operative pain was treated with long-acting spinal or epidural spinal opioids.The combination of dexamethasone and a 5-HT3 receptor antagonist such as ondansetron is more effective than a 5-HT3 receptor antagonist alone in preventing postoperative nausea and vomiting.
A meta-analysis of seven clinical trials of critically ill COVID-19 participants, each treated with one of three different corticosteroids found a statistically significant reduction in death. The largest reduction was obtained with dexamethasone (36% compared to placebo).In September 2020, the European Medicines Agency (EMA) endorsed the use of dexamethasone in adults and adolescents, from twelve years of age and weighing at least 40 kilograms (88 lb), who require supplemental oxygen therapy. Dexamethasone can be taken by mouth or given as an injection or infusion (drip) into a vein.In November 2020, the Public Health Agency of Canadas Clinical Pharmacology Task Group recommended dexamethasone for hospitalized patients requiring mechanical ventilation. Although dexamethasone, and other glucocorticoids, reduce mortality in COVID-19 they have also been associated with an increased risk of secondary infections, secondary infections being a significant issue in critically ill COVID-19 patients.The mechanism of action of dexamethasone involves suppression of late-stage interferon type I programs in severe COVID-19 patients. Endocrine
Dexamethasone is the treatment for the very rare disorder of glucocorticoid resistance.In adrenal insufficiency and Addisons disease, dexamethasone is prescribed when the patient does not respond well to prednisone or methylprednisolone.It can be used in congenital adrenal hyperplasia in older adolescents and adults to suppress Adrenocorticotropic hormone (ACTH) production. It is typically given at night. Pregnancy
Dexamethasone may be given to women at risk of delivering prematurely to promote maturation of the fetus lungs.