Mifepristone Discontinuation Before Surgery
Mifepristone discontinuation timing before surgery is not specified in the mifepristone prescribing information as a general rule for elective procedures. [1] Perioperative medication management should be individualized with the surgeon and the prescribing clinician based on the indication for mifepristone and the surgical bleeding/anesthesia context. [1]
Indication-Dependent Management
Mifepristone tablets (for hyperglycemia due to hypercortisolism in Cushing’s syndrome) have labeling guidance that addresses adverse-event-driven discontinuation rather than routine perioperative stopping instructions. [1] Mifepristone in a regimen with misoprostol (for medical termination of pregnancy) has a labeled dosing schedule for that regimen, which does not provide a perioperative “stop X days before surgery” instruction for general surgery. [2]
When Stopping Is Specifically Recommended
For mifepristone tablets for Cushing’s syndrome, treatment should be discontinued immediately if adrenal insufficiency is suspected, with glucocorticoids administered without delay. [1]
Typical Practical Approach
If mifepristone is being taken chronically for Cushing’s syndrome, stopping solely because of planned surgery is not supported by a labeled perioperative discontinuation interval. [1] If mifepristone is being used for a pregnancy termination regimen, the labeled management is regimen-based timing (mifepristone followed by misoprostol after 24–48 hours), and perioperative discontinuation timing should be directed by the prescribing clinician for the specific clinical context. [2]
Initiation or Continuation Decision Documentation
The operative team and the prescribing clinician should document the indication for mifepristone, the intended surgical date, and whether any concern exists for adrenal insufficiency (for Cushing’s syndrome use) or for complications related to the pregnancy termination regimen (if that is the indication). [1][2]
Information Needed to Determine a Safe Plan
Key details required to determine whether discontinuation is appropriate include:
- Indication (Cushing’s syndrome vs pregnancy termination regimen). [1][2]
- Planned surgery type and bleeding risk. [1][2]
- Current dose and timing of the most recent mifepristone dose. [1][2]
- Any symptoms or clinical concern for adrenal insufficiency (only relevant for Cushing’s syndrome use). [1]
Direct Answer to “How Long Before the Operation?”
No universally recommended number of days before surgery is provided in the mifepristone prescribing information for routine elective surgical procedures. [1] Stopping timing should instead be determined by the indication-specific prescriber plan and surgical/anesthesia requirements, with immediate discontinuation reserved for suspected adrenal insufficiency when using mifepristone tablets for Cushing’s syndrome. [1]
Safety Caveat
Because mifepristone has indication-specific boxed warnings and safety requirements, any perioperative discontinuation plan should be coordinated with the prescriber who is following the indication-specific monitoring and risk management plan. [1][2]