Warnings for Hexadrol
Serious Neurologic Adverse Reactions With Epidural
Administration
Serious neurologic events, some resulting in death, have
been reported with epidural injection of corticosteroids. Specific events
reported include, but are not limited to, spinal cord infarction, paraplegia,
quadriplegia, cortical blindness, and stroke. These serious neurologic events
have been reported with and without use of fluoroscopy. The safety and
effectiveness of epidural administration of corticosteroids have not been
established, and corticosteroids are not approved for this use.
In patients on corticosteroid therapy subject to any
unusual stress, increased dosage of rapidly acting corticosteroids before,
during and after the stressful situation is indicated. Corticosteroids may mask
some signs of infection, and new infections may appear during their use. There
may be decreased resistance and inability to localize infection when
corticosteroids are used.
Prolonged use of corticosteroids may produce posterior
subcapsular cataracts, glaucoma with possible damage to the optic nerves, and
may enhance the establishment of secondary ocular infections due to fungi or
viruses.
Children who are on immunosuppressant drugs are more
susceptible to infections than healthy children. Chickenpox and measles, for
example, can have a more serious or even fatal course in children on
immunosuppressant corticosteroids. In such children, or in adults who have not
had these diseases, particular care should be taken to avoid exposure. If
exposed, therapy with varicella zoster immune globulin (VZIG) or pooled
intravenous immunoglobulin (IVIG), as appropriate, may be indicated. If
chickenpox develops, treatment with antiviral agents may be considered.
Similarly, corticosteroids should be used with great care
in patients with known or suspected Strongyloides (threadworm) infestation. In
such patients, corticosteroidinduced immunosuppression may lead to
Strongyloides hyperinfection and dissemination with widespread larval migration,
often accompanied by severe enterocolitis and potentially fatal gram-negative
septicemia.
Usage In Pregnancy
Since adequate human reproduction studies have not been
done with corticosteroids, use of these drugs in pregnancy, nursing mothers or
women of childbearing potential requires that the possible benefits of the drug
be weighed against the potential hazards to the mother and embryo or fetus.
Infants born of mothers who have received substantial doses of corticosteroids
during pregnancy should be carefully observed for signs of hypoadrenalism.
Average and large doses of cortisone or hydrocortisone
can cause elevation of blood pressure, salt and water retention, and increased
excretion of potassium. These effects are less likely to occur with the synthetic
derivatives except when used in large doses. Patients with a stressed
myocardium should be observed carefully and the drug administered slowly since
premature ventricular contractions may occur with rapid administration. Dietary
salt restriction and potassium supplementation may be necessary. All
corticosteroids increase calcium excretion.
While on corticosteroid therapy patients should not be
vaccinated against smallpox. Other immunization procedures should not be
undertaken in patients who are on corticosteroids, especially in high doses,
because of possible hazards of neurological complications and lack of antibody
response.
The use of Hexadrol® Phosphate Injection
(dexamethasone sodium phosphate injection, USP) in active tuberculosis should
be restricted to those cases of fulminating or disseminated tuberculosis in
which the corticosteroid is used for the management of the disease in
conjunction with an appropriate anti-tuberculosis regimen.
If corticosteroids are indicated in patients with latent
tuberculosis or tuberculin reactivity, close observation is necessary as
reactivation of the disease may occur. During prolonged corticosteroid therapy,
these patients should receive chemoprophylaxis.
Because rare instances of anaphylactoid reactions have
occurred in patients receiving parenteral corticosteroid therapy, appropriate
precautionary measures should be taken prior to administration, especially when
the patient has a history of allergy to any drug.
Hexadrol® Phosphate Injection contains sodium
sulfite, a sulfite that may cause allergic type reactions including
anaphylactic symptoms and life-threatening or less severe asthmatic episodes in
certain susceptible people. The overall prevalence of sulfite sensitivity in
the general population is unknown and probably low. Sulfite sensitivity is seen
more frequently in asthmatic than in nonasthmatic people.