PRECAUTIONS
General
The lowest possible dose of corticosteroid should be used
to control the condition under treatment. When reduction in dosage is possible,
the reduction should be gradual.
Since complications of treatment with glucocorticoids are
dependent on the size of the dose and the duration of treatment, a risk/benefit
decision must be made in each individual case as to dose and duration of
treatment and as to whether daily or intermittent therapy should be used.
Kaposi's sarcoma has been reported to occur in patients
receiving corticosteroid therapy, most often for chronic conditions.
Discontinuation of corticosteroids may result in clinical improvement.
Cardio-renal
As sodium retention with resultant edema and potassium
loss may occur in patients receiving corticosteroids, these agents should be
used with caution in patients with congestive heart failure, hypertension, or
renal insufficiency.
Endocrine
Drug-induced secondary adrenocortical insufficiency may
be minimized by gradual reduction of dosage. This type of relative
insufficiency may persist for months after discontinuation of therapy;
therefore, in any situation of stress occurring during that period, hormone
therapy should be reinstituted. Metabolic clearance of corticosteroids is
decreased in hypothyroid patients and increased in hyperthyroid patients.
Changes in thyroid status of the patient may necessitate adjustment in dosage.
Gastrointestinal
Steroids should be used with caution in active or latent
peptic ulcers, diverticulitis, fresh intestinal anastomoses, and non-specific
ulcerative colitis, since they may increase the risk of a perforation. Signs of
peritoneal irritation following gastrointestinal perforation in patients
receiving corticosteroids may be minimal or absent.
There is an enhanced effect due to decreased metabolism
of corticosteroids in patients with cirrhosis.
Musculoskeletal
Corticosteroids decrease bone formation and increase bone
resorption both through their effect on calcium regulation (e.g., decreasing
absorption and increasing excretion) and inhibition of osteoblast function.
This, together with a decrease in the protein matrix of the bone secondary to
an increase in protein catabolism, and reduced sex hormone production, may lead
to inhibition of bone growth in pediatric patients and the development of
osteoporosis at any age. Special consideration should be given to patients at
increased risk of osteoporosis (i.e., postmenopausal women) before initiating
corticosteroid therapy.
Local injection of a steroid into a previously infected
site is not usually recommended.
Neurologic-psychiatric
Although controlled clinical trials have shown
corticosteroids to be effective in speeding the resolution of acute
exacerbations of multiple sclerosis, they do not show that corticosteroids
affect the ultimate outcome or natural history of the disease. The studies do
show that relatively high doses of corticosteroids are necessary to demonstrate
a significant effect. (See DOSAGE AND ADMINISTRATION.)
An acute myopathy has been observed with the use of high
doses of corticosteroids, most often occurring in patients with disorders of
neuromuscular transmission (e.g., myasthenia gravis), or in patients receiving
concomitant therapy with neuromuscular blocking drugs (e.g., pancuronium). This
acute myopathy is generalized, may involve ocular and respiratory muscles, and
may result in quadriparesis. Elevation of creatine kinase may occur. Clinical
improvement or recovery after stopping corticosteroids may require weeks to
years.
Psychic derangements may appear when corticosteroids are
used, ranging from euphoria, insomnia, mood swings, personality changes, and
severe depression to frank psychotic manifestations. Also, existing emotional
instability or psychotic tendencies may be aggravated by corticosteroids.
Ophthalmic
Intraocular pressure may become elevated in some
individuals. If steroid therapy is continued for more than 6 weeks, intraocular
pressure should be monitored.
Other
Pheochromocytoma crisis, which can be fatal, has been
reported after administration of systemic corticosteroids. In patients with
suspected pheochromocytoma, consider the risk of pheochromocytoma crisis prior
to administering corticosteroids.
Carcinogenesis, Mutagenesis, Impairment Of Fertility
No adequate studies have been conducted in animals to
determine whether corticosteroids have a potential for carcinogenesis or
mutagenesis.
Steroids may increase or decrease motility and number of
spermatozoa in some patients.
Corticosteroids have been shown to impair fertility in
male rats.
Pregnancy
Teratogenic Effects
Pregnancy Category C.
Corticosteroids have been shown to be teratogenic in many
species when given in doses equivalent to the human dose. Animal studies in
which corticosteroids have been given to pregnant mice, rats, and rabbits have
yielded an increased incidence of cleft palate in the offspring. There are no
adequate and well-controlled studies in pregnant women. Corticosteroids should
be used during pregnancy only if the potential benefit justifies the potential
risk to the fetus. Infants born to mothers who have received corticosteroids
during pregnancy should be carefully observed for signs of hypoadrenalism.
Nursing Mothers
Systemically administered corticosteroids appear in human
milk and could suppress growth, interfere with endogenous corticosteroid
production, or cause other untoward effects. Because of the potential for
serious adverse reactions in nursing infants from corticosteroids, a decision
should be made whether to continue nursing or discontinue the drug, taking into
account the importance of the drug to the mother.
Pediatric Use
The efficacy and safety of corticosteroids in the
pediatric population are based on the well-established course of effect of
corticosteroids, which is similar in pediatric and adult populations. Published
studies provide evidence of efficacy and safety in pediatric patients for the
treatment of nephrotic syndrome ( > 2 years of age) and aggressive lymphomas
and leukemias ( > 1 month of age). Other indications for pediatric use of
corticosteroids (e.g., severe asthma and wheezing) are based on adequate and
well-controlled trials conducted in adults, on the premises that the course of
the diseases and their pathophysiology are considered to be substantially
similar in both populations.
The adverse effects of corticosteroids in pediatric
patients are similar to those in adults (see ADVERSE REACTIONS). Like
adults, pediatric patients should be carefully observed with frequent
measurements of blood pressure, weight, height, intraocular pressure, and
clinical evaluation for the presence of infection, psychosocial disturbances,
thromboembolism, peptic ulcers, cataracts, and osteoporosis. Pediatric patients
who are treated with corticosteroids by any route, including systemically
administered corticosteroids, may experience a decrease in their growth
velocity. This negative impact of corticosteroids on growth has been observed
at low systemic doses and in the absence of laboratory evidence of HPA axis
suppression (i.e., cosyntropin stimulation and basal cortisol plasma levels).
Growth velocity may therefore be a more sensitive indicator of systemic
corticosteroid exposure in pediatric patients than some commonly used tests of
HPA axis function. The linear growth of pediatric patients treated with
corticosteroids should be monitored, and the potential growth effects of
prolonged treatment should be weighed against clinical benefits obtained and
the availability of treatment alternatives. In order to minimize the potential
growth effects of corticosteroids, pediatric patients should be titrated to the
lowest effective dose.
Geriatric Use
Clinical studies did not include sufficient numbers of
subjects aged 65 and over to determine whether they respond differently from
younger subjects. Other reported clinical experience has not identified
differences in responses between the elderly and younger patients. In general,
dose selection for an elderly patient should be cautious, usually starting at
the low end of the dosing range, reflecting the greater frequency of decreased
hepatic, renal, or cardiac function, and of concomitant disease or other drug
therapy.