Reviewed by MedNext Clinical Team
Medication errors at care transitions are among the most prevalent and preventable sources of patient harm in modern healthcare. Studies consistently show that discrepancies between a patient's pre-admission medication list and the medications prescribed on admission affect 30–70% of hospital patients, with a significant proportion of these discrepancies having the potential to cause moderate or severe harm [1]. Medication reconciliation — the formal process of creating an accurate and complete list of a patient's medications and comparing it against prescriptions at each transition point — is the primary intervention for preventing these errors.
Why Care Transitions Are High-Risk
The transition from one care setting to another — from home to hospital, between hospital wards, or from hospital back to primary care — is associated with a predictable cluster of medication errors [2]:
- Omission errors — medications the patient was taking before admission are not prescribed on the inpatient drug chart
- Commission errors — medications are added on admission that were not part of the patient's regular regimen
- Dose discrepancies — the dose prescribed differs from the patient's usual dose, either through transcription error or deliberate adjustment that is not clearly communicated
- Duplication — a drug is prescribed under a different brand name or formulation alongside the existing generic, resulting in unintentional double-dosing
- Formulation substitutions — inpatient formulary restrictions require switching to a different formulation, with dosing changes not correctly calculated or communicated on discharge [1]
The Medication Reconciliation Process
Effective medication reconciliation is a structured three-step process [2]:
Step 1: Medication History Taking
Obtaining an accurate medication history is more challenging than it appears. Patients frequently cannot recall all their medications, doses, or frequencies. Community pharmacies, GP records, and repeat prescription lists are valuable supplementary sources. It is important to enquire specifically about over-the-counter medicines, herbal and complementary preparations, eye drops, patches, inhalers, and injections — medications that patients may not consider "proper medicines" and therefore fail to mention [1].
Step 2: Reconciliation and Verification
The medication history is compared against the current prescription. Discrepancies are identified, classified (intentional versus unintentional), and resolved. Intentional changes — for example, holding antihypertensives in a patient with acute kidney injury — should be clearly documented with the rationale, so that downstream prescribers understand why the change was made [2].
Step 3: Communication at Discharge
Discharge medication reconciliation is particularly critical. The discharge prescription must be reconciled with the inpatient drug chart, the pre-admission medication list, and any changes made during admission. All changes should be explained to the patient and communicated clearly to the receiving community prescriber with explicit documentation of the reason for each change, when temporary medications should stop, and which medications have been newly initiated or modified permanently [2].
The Role of Technology
Electronic prescribing and medicines administration (EPMA) systems have significantly reduced transcription errors by eliminating illegible handwriting and providing automated alerts for common discrepancies. Decision support embedded in EPMA — such as dose range checking, allergy alerts, and drug interaction warnings — adds a further layer of safety [1].
However, technology does not solve the fundamental challenge of obtaining an accurate pre-admission medication list. This still requires clinical interview skills, access to community prescription records, and the time to cross-reference multiple sources. Systems that allow direct electronic access to community pharmacy dispensing records and GP medication records substantially reduce medication history errors, particularly in elderly patients with complex polypharmacy.
How MedNext Supports Medication Reconciliation
MedNext Formulary supports safe medication reconciliation through several features. When reviewing a patient's medication list, instant access to drug monographs from the MedNext Audited Proprietary Dataset allows rapid verification of indications, contraindications, and dose ranges. The drug interaction checker enables clinicians to cross-reference the entire reconciled medication list in real time, identifying interactions that may have been introduced during the inpatient episode. For patients on renally or hepatically cleared drugs, MedNext's dosing calculators support appropriate dose adjustment on admission and at discharge.
For teams managing high-volume admissions, the speed and comprehensiveness of MedNext's drug data directly supports the structured reconciliation process, reducing the time burden that is one of the primary barriers to thorough reconciliation in busy clinical environments.
References
- Tam VC, Knowles SR, Cornish PL, Fine N, Marchesano R, Etchells EE. Frequency, type and clinical importance of medication history errors at admission to hospital: a systematic review. CMAJ. 2005;173(5):510-515.
- Kwan JL, Lo L, Sampson M, Shojania KG. Medication reconciliation during transitions of care as a patient safety strategy: a systematic review. Ann Intern Med. 2013;158(5 Pt 2):397-403.