PRECAUTIONS
General
The lowest possible dose of corticosteroid should be used
to control the condition under treatment, and 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.
There is an enhanced effect of corticosteroids in
patients with hypothyroidism and in those with cirrhosis.
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 hypertension, congestive heart failure, 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. Since mineralocorticoid secretion may be
impaired, salt and/or a mineralocorticoid should be administered concurrently.
Gastrointestinal
Steroids should be used with caution in nonspecific
ulcerative colitis, if there is a probability of impending perforation, abscess
or other pyogenic infection; diverticulitis; fresh intestinal anastomoses;
active or latent peptic ulcer.
Signs of peritoneal irritation following gastrointestinal
perforation in patients receiving corticosteroids may be minimal or absent.
Musculoskeletal
Corticosteroids decrease bone formation and increase bone
resorption both through their effect on calcium regulation (i.e., 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 children and adolescents 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.
Neuro-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 they 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 creatinine 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.
Pregnancy
Teratogenic Effects
Pregnancy Category C
Prednisolone has been shown to be teratogenic in many
species when given in doses equivalent to the human dose. Animal studies in
which prednisolone has 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. PEDIAPRED® 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. Caution should be exercised when
PEDIAPRED® is administered to a nursing woman.
Pediatric Use
The efficacy and safety of prednisolone 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). However, some of these conclusions and
other indications for pediatric use of corticosteroid, 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 prednisolone 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.
Children 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 children than some commonly
used tests of HPA axis function. The linear growth of children treated with
corticosteroids by any route should be monitored, and the potential growth
effects of prolonged treatment should be weighed against clinical benefits
obtained and the availability of other treatment alternatives. In order to
minimize the potential growth effects of corticosteroids, children should be
titrated to the lowest effective dose.
Geriatric Use
Clinical studies of PEDIAPRED® did not include sufficient
numbers of subjects aged 65 and over to determine whether they respond
differently from younger subjects. Other reported clinical experience with
prednisolone sodium phosphate has not identified differences in responses
between the elderly and younger patients. However, the incidence of
corticosteroid-induced side effects may be increased in geriatric patients and
appear to be dose-related. Osteoporosis is the most frequently encountered
complication, which occurs at a higher incidence rate in corticosteroid-treated
geriatric patients as compared to younger populations and in age-matched
controls. Losses of bone mineral density appear to be greatest early on in the
course of treatment and may recover over time after steroid withdrawal or use
of lower doses (i.e., (5 mg/day). Prednisolone doses of 7.5 mg/day or higher
have been associated with an increased relative risk of both vertebral and
nonvertebral fractures, even in the presence of higher bone density compared to
patients with involutional osteoporosis.
Routine screening of geriatric patients, including
regular assessments of bone mineral density and institution of fracture
prevention strategies, along with regular review of prednisolone indication
should be undertaken to minimize complications and keep the prednisolone dose
at the lowest acceptable level. Co-administration of bisphosphonates has been
shown to retard the rate of bone loss in corticosteroid-treated males and
postmenopausal females, and these agents are recommended in the prevention and
treatment of corticosteroid-induced osteoporosis.
It has been reported that equivalent weight-based doses
yield higher total and unbound prednisolone plasma concentrations and reduced
renal and non-renal clearance in elderly patients compared to younger
populations. However, it is not clear whether dosing reductions would be
necessary in elderly patients, since these pharmacokinetic alterations may be
offset by age-related differences in responsiveness of target organs and/or
less pronounced suppression of adrenal release of cortisol. Dose selection for
an elderly patient should be cautious, usually staring 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.
This drug is known to be substantially excreted by the
kidney, and the risk of toxic reactions to this drug may be greater in patients
with impaired renal function. Because elderly patients are more likely to have
decreased renal function, care should be taken in dose selection, and it may be
useful to monitor renal function (see CLINICAL PHARMACOLOGY).