12.4 Expanded Scope: Adapting, Renewing, Initiating, and Medication Reconciliation
Key Takeaways
- Adapting a prescription means changing the dose, formulation, or regimen of an existing prescription; renewing means continuing therapy for continuity of care; initiating means starting new therapy under provincial authority.
- Every expanded-scope activity requires an assessment, documentation, and notification of the original prescriber, and the pharmacist assumes accountability for the decision.
- Therapeutic substitution is a change to a different drug and generally requires specific authority, distinct from generic interchange under provincial drug plan rules.
- Medication reconciliation compares a best possible medication history against active orders and resolves each discrepancy as intentional, undocumented intentional, or unintentional.
- Unintentional discrepancies at transitions of care are the most common source of preventable harm in the medication use process.
12.4 Expanded Scope: Adapting, Renewing, Initiating, and Medication Reconciliation
Exam Focus: The syllabus names "skills required for expanded scope of practice including renewing, modifying, and initiating pharmacotherapy, as well as deprescribing" and "medication reconciliation" and "use of pharmacy information technology" as explicit bullets. Items test whether the specific act is within scope and whether the required documentation and notification occurred.
Understanding the Vocabulary
Scope varies substantially by province, so the examination tests the concept and the professional obligations, not one province's list. Confirm your own jurisdiction's authority in practice.
| Activity | Definition | Example |
|---|---|---|
| Adapt or modify | Change the dose, formulation, regimen, or route of an existing prescription | Changing metformin 1,000 mg once daily to 500 mg twice daily to reduce gastrointestinal upset |
| Renew or extend | Continue an existing therapy for continuity of care when the prescriber is unavailable | Providing a further 3 months of an antihypertensive while an appointment is arranged |
| Therapeutic substitution | Change to a different drug, usually within the same class | Changing one proton pump inhibitor to another when supply fails |
| Initiate | Start new therapy where provincial authority permits | Prescribing for a listed minor ailment, or smoking cessation therapy |
| Deprescribe | Systematically taper or stop a drug that is no longer of net benefit | Tapering long-term benzodiazepine therapy in an older adult |
Generic interchange under provincial drug plan rules — substituting a bioequivalent product with the same active ingredient — is a separate concept from therapeutic substitution, and it does not require prescriber authorisation in the same way. Narrow-therapeutic-index products such as levothyroxine, warfarin, and antiepileptics warrant caution and consistency in brand even where interchange is permitted.
The Obligations Attached to Every Expanded-Scope Act
Whatever the province, the same professional structure applies:
- Assess. Confirm the diagnosis and indication, review the full profile, evaluate effectiveness and safety, and establish that the patient's condition is stable and appropriate for the action.
- Confirm the act is within scope. Some provinces exclude controlled substances, restrict initiation to specified conditions, or limit the duration of a renewal.
- Obtain informed consent. Explain what is being changed and why.
- Act, and accept accountability. A pharmacist who adapts or initiates therapy is responsible for that decision on the same footing as any prescriber.
- Document. Record the assessment, the rationale, the action, the monitoring plan, and the follow-up date.
- Notify the original prescriber, in the manner and within the timeframe the province requires.
- Follow up. Confirm the intended outcome was achieved and no new problem arose.
Situations that generally fall outside adaptation: changing therapy where the diagnosis is uncertain, a patient who is unstable or deteriorating, therapy that requires monitoring the pharmacist cannot access, and any change the patient does not consent to. In those cases the correct action is to contact the prescriber.
Minor ailment prescribing now exists in most provinces, with each publishing its own list of eligible conditions, its own assessment forms, and its own exclusion criteria. Common inclusions are uncomplicated urinary tract infection, allergic rhinitis, cold sores, dermatitis, oral thrush, and hemorrhoids. Every provincial framework requires red-flag screening and referral criteria; the pharmacist's most important judgement is often the decision not to prescribe.
Deprescribing
Deprescribing is the planned, supervised reduction or cessation of a drug whose harms now outweigh its benefits. It is an active clinical intervention, not the absence of one.
Priority targets in Canadian practice include long-term proton pump inhibitors without an ongoing indication, benzodiazepines and Z-drugs for insomnia in older adults, antipsychotics used for the behavioural and psychological symptoms of dementia, sulfonylureas causing hypoglycemia, and anticholinergics contributing to cognitive burden.
The method: identify the drug and confirm the absence of an ongoing indication; discuss the benefits and risks with the patient and family; taper rather than stop abruptly where withdrawal or rebound is expected — benzodiazepines, opioids, corticosteroids, beta-blockers, proton pump inhibitors, antidepressants; set explicit monitoring for symptom return; and document a plan for what happens if symptoms recur. Tell the patient in advance that a symptom might return, which prevents an expected withdrawal effect being interpreted as proof that the drug was essential.
Medication Reconciliation
Medication reconciliation is a formal process: create a best possible medication history, compare it against the medications ordered at the transition point, identify and classify every discrepancy, resolve it with the prescriber, and communicate the reconciled list.
| Discrepancy type | Meaning | Action |
|---|---|---|
| Intentional, documented | The change was deliberate and recorded | No action beyond confirming the patient understands |
| Intentional, undocumented | The change was deliberate but the reason is not recorded | Clarify and document, so the next clinician does not reverse it |
| Unintentional | Omission, duplication, or wrong dose, route, or frequency | Resolve with the prescriber; this is where preventable harm concentrates |
Reconciliation is required at admission, internal transfer, and discharge, and it is equally valuable in the community after a hospital stay or a specialist visit. The most common unintentional discrepancy is the omission of a chronic medication that was held during the admission and never restarted.
Pharmacy Information Technology
Technology supports these activities but does not replace judgement.
- Provincial drug information systems give a view of dispensing across pharmacies, which strengthens a best possible medication history and supports controlled-substance monitoring.
- Clinical decision support flags interactions and allergies. Alert fatigue is the predictable hazard: when most alerts are low value, high-value alerts are dismissed with the rest, so systems must be tuned rather than simply enabled.
- Electronic prescribing removes handwriting error and transcription risk, but introduces selection error from adjacent entries in a drop-down list.
- Automated dispensing and pouch packaging improve accuracy and adherence but require the same final verification as any other product.
- Privacy obligations apply to every one of these systems. Access personal health information only for a professional purpose, on a need-to-know basis, and under the applicable federal or provincial privacy legislation.
A pharmacist changes a patient's ramipril from 10 mg once daily to 5 mg twice daily to reduce a peak-related dizziness, then documents the change and notifies the prescriber. This activity is best described as:
On admission, a patient's home levothyroxine is not included in the admission orders and no reason is recorded. How is this discrepancy classified?
Which situation makes prescription adaptation inappropriate, requiring contact with the prescriber instead?
A pharmacist plans to stop a long-term benzodiazepine in an 80-year-old. Which step is essential?