Steroid Cover and the Dental Patient
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Direct answer
Long-term corticosteroid therapy suppresses the hypothalamic-pituitary-adrenal axis, so the adrenal glands cannot mount the cortisol surge that surgery demands — and under the stress of an extraction or general anaesthesia, blood pressure collapses: an adrenal crisis of hypotension unresponsive to position, with nausea, weakness and collapse. The risk rule most commonly taught: patients who have taken the equivalent of prednisolone 7.5-10 mg or more daily for longer than two to three weeks — currently, or within the past one to two years — may be suppressed and need consideration of supplementation. Modern practice has narrowed the requirement: routine dental treatment under local anaesthesia almost never needs supplemental steroids, because the cortisol demand is modest and usually within even a suppressed patient's reserve; extensive surgery, general anaesthesia and major stress receive cover — classically hydrocortisone 100 mg intramuscularly or intravenously before the procedure, repeated 50-100 mg six-to-eight-hourly over 24-72 hours, or a doubled oral dose on the day.
What you must remember
- The risk cohort: equivalent of prednisolone 7.5-10 mg daily (or more) for longer than two to three weeks, currently or within roughly the past one to two years; higher doses and longer durations mean deeper suppression.
- Modern practice for routine dentistry: treatment under local anaesthesia with good analgesia usually needs no supplementation — the patient takes the usual morning dose; supplementation belongs to extensive surgery, general anaesthesia and major stress, planned with the physician.
- Classical cover regimens (still examined): hydrocortisone 100 mg intramuscularly or intravenously with premedication, then 50-100 mg six-to-eight-hourly for 24-72 hours; or double the usual oral dose on the day of surgery.
- Dose equivalents to recite: hydrocortisone 20 mg = prednisolone 5 mg = methylprednisolone 4 mg = dexamethasone 0.75 mg.
- Adrenal crisis: hypotension that does not respond to lying flat, nausea, vomiting, weakness, confusion — precipitated by stress, infection or missed doses; management in the chair is hydrocortisone 100 mg intramuscularly or intravenously, oxygen, intravenous saline and urgent ambulance transfer.
- Steroid subtleties: delayed wound healing, candidiasis and steroid-induced diabetes — screen for all three; inhaled steroids rarely need cover but do need rinsing instructions.
A practical decision walkthrough
A 60-year-old woman with rheumatoid arthritis has taken prednisolone 10 mg daily for four years; she needs two extractions under local anaesthesia. Is she in the risk cohort? Unambiguously — years at twice the threshold dose. Does routine extraction under local anaesthesia with complete analgesia require supplementation? Under current teaching, no: she takes her usual morning steroid, the appointment is in the morning when endogenous cortisol would peak, pain control is meticulous (because pain is the stressor), and she is observed briefly afterwards.
Now change one variable: the same patient, four teeth removed under general anaesthesia for extensive dental disease. Supplementation is planned — hydrocortisone 100 mg intramuscularly with premedication and 50-100 mg six-to-eight-hourly for 24-72 hours, tapering as the surgical stress subsides, in hospital with anaesthetist and physician aligned. And the emergency drill if any steroid-dependent patient collapses mid-procedure: supine position, and if the blood pressure stays low while the patient looks grey and vomiting rather than merely faint — hydrocortisone 100 mg intramuscularly immediately, oxygen, ambulance. Same patient, three scenarios, three answers; the discipline is matching cover to stress, not applying one rule everywhere.
How the exam frames it
Theory questions ask "which dental patients need steroid supplementation and what regimen", and the complete answer has three layers: the at-risk definition (dose, duration, recency), the modern graduated approach (routine local anaesthesia — usual dose only; extensive or general anaesthesia — supplementation), and the crisis plan. Indian textbooks that predate the newer guidance often expect the classical regimens; the strongest answer presents traditional teaching, then the current graduated view. The viva one-liners: dose equivalents (hydrocortisone 20 mg = prednisolone 5 mg = dexamethasone 0.75 mg); the crisis drug (hydrocortisone with intravenous fluids, not adrenaline alone as in anaphylaxis); and vasovagal syncope (pale, brief, recovers flat) versus adrenal crisis (profound hypotension, vomiting, no recovery until steroid given) — the genuine chairside discriminator that saves lives.
Frequently asked questions
Which steroid-taking patients are considered at risk of adrenal suppression?
Those who have taken the equivalent of prednisolone about 7.5-10 mg or more daily for longer than two to three weeks, currently or within the past one to two years; higher doses and longer courses deepen the risk.
Do patients on long-term steroids need supplementation for routine dental treatment under local anaesthesia?
Usually no — with the usual daily dose taken, profound local anaesthesia and good analgesia, current guidance reserves supplementation for extensive surgery, general anaesthesia and major stress.
What is the classical steroid cover regimen for major dental surgery?
Hydrocortisone 100 mg intramuscularly or intravenously before surgery, followed by 50-100 mg six-to-eight-hourly for 24-72 hours and tapered, or doubling the usual oral dose on the day of surgery per older regimens.
How does an adrenal crisis present in the dental chair?
Hypotension unresponsive to supine positioning with nausea, vomiting, weakness and collapse during or after a stressful procedure in a steroid-dependent patient — distinguish it from vasovagal syncope, which recovers when flat.
What is the immediate management of suspected adrenal crisis?
Stop treatment, call for help, give oxygen and hydrocortisone 100 mg intramuscularly or intravenously, start intravenous saline if available, and arrange emergency hospital transfer.