corticosteroids Flashcards
why should patients report any blurred vision or other visual disturbances with corticosteroid treatment given by any route
because Central serous chorioretinopathy is a retinal disorder that has been linked to the use of corticosteroids
what are the Mineralocorticoid side effects
- hypertension
- sodium retention
- water retention
- potassium loss
- calcium loss
what are the Glucocorticoid side effects
- diabetes
- osteoporosis (which is a danger, particularly in the elderly, as it can result in osteoporotic fractures for example of the hip or vertebrae). High doses are associated with avascular necrosis of the femoral head (when blood supply to the bone is interrupted. leads to disabling arthritis)
- muscle wasting (proximal myopathy) can also occur
- corticosteroid therapy is also weakly linked with peptic ulceration and perforation
- psychiatric reactions may also occur
how do you minimise side effects of corticosteroids
by using the lowest effective dose for the minimum period possible. can also:
- give a single dose in the morning (suppressive action least in morning)
- the total dose for two days can sometimes be taken as a single dose on alternate days
- intermittent therapy with short courses
which patients should be issued a Steroid Emergency Card
patients with adrenal insufficiency and steroid dependence who are at risk of adrenal crisis
what does the adrenal cortex secrete in normal healthy individuals
secretes CORTISOL (glucocorticoid) and ALDOSTERONE (mineralocorticoid).
note: cortisol- helps regulate metabolism and helps your body respond to stress. aldosterone- helps control blood pressure
name 2 corticosteroids which have very high glucocorticoid activity and insignificant mineralocorticoid activity
Dexamethasone and Betamethasone
what is the MHRA warning associated with long-term continuous or inappropriate use of all topical corticosteroids
there is a risk of topical steroid withdrawal reactions
- can result in the development of rebound flares + reported as dermatitis with intense redness, stinging, and burning that can spread beyond the initial treatment area
- use lowest potency needed for shortest time
what are the contraindications for all SYSTEMIC corticosteroids
- Avoid injections containing benzyl alcohol in neonates (in neonates)
- avoid live virus vaccines in those receiving immunosuppressive doses (serum antibody response diminished)
- systemic infection (unless specific therapy given)
what are the contraindications for all TOPICAL corticosteroids
- Acne
- potent corticosteroids in widespread plaque psoriasis
- rosacea
- untreated bacterial, fungal or viral skin lesions
why must you avoid abrupt withdrawal of corticosteroids after prolonged use
Abrupt withdrawal after a prolonged period can lead to acute adrenal insufficiency, hypotension, or death
- adrenal atrophy develops after prolonged corticosteroid and can persist for years after stopping
- note: adrenal atrophy is with all forms of administration but particularly systemic. if a patient get a significant illness/trauma/ surgical procedure, need to temporary increase dose of corticosteroid *
how may infections change in a patient who has been using corticosteroids for a long time
- increased risk to infections and severity of infections
- clinical presentation of infections may also be atypical
note this is due to suppressed immune system
which patients taking corticosteroids need a varicella–zoster immunoglobulin vaccine
patients who have used corticosteroids within 3 months + not immune to chickenpox
this is because patients receiving oral or parenteral corticosteroids are at risk of severe chickenpox
- note rash is not necessarily a prominent feature of this chicken pox. symptoms are pneumonia, hepatitis and disseminated intravascular coagulation.*
what should happen if a patient taking oral or parenteral corticosteroids has a confirmed case of chickenpox
need specialist care and urgent treatment
- Corticosteroids should not be stopped and dosage may need to be increased.
what do patients taking corticosteroids need to avoid exposure to
measles (and chicken pox)