Medication safety - factors increasing risk of error

Sources of error

Medication error risk arises from system-level factors (look-alike/sound-alike drug names, complex dosing calculations, transitions of care/handover points, high workload/interruption-prone environments) and individual-level factors (fatigue, inexperience, communication breakdown) - a systems-based approach to error reduction is generally more effective than relying on individual vigilance alone
A significant, largely preventable source of patient harm across healthcare settings, with error risk concentrated at specific high-risk points in the medication use process (prescribing, transcription, dispensing, administration)

Transitions of care (admission, ward transfer, discharge) are a particularly high-risk point for medication error, since medication history discrepancies, incomplete reconciliation, and communication gaps between treating teams all converge at these handover moments - explaining why structured medication reconciliation processes specifically target these transition points

Systematic identification of error-prone processes (look-alike/sound-alike drug name confusion, similar packaging, complex weight-based/renal-adjusted dosing calculations) informs targeted system-level safeguards rather than relying solely on individual double-checking

Structured medication reconciliation at every transition of care point (admission, transfer, discharge) is a core, evidence-based error-reduction strategy
System-level safeguards (electronic prescribing with decision support, independent double-checking for high-risk medications, standardised dosing protocols) reduce reliance on individual vigilance alone, which is a less reliable error-prevention strategy in isolation

Medication reconciliation at transitions of care (a high-yield, evidence-based intervention point), look-alike/sound-alike drug name errors, high-risk medication double-checking protocols (e.g. insulin, anticoagulants, chemotherapy), electronic prescribing decision support
Transitions of care (hospital admission, ward transfer, and particularly discharge) are disproportionately high-risk points for medication error, since this is where medication history discrepancies and incomplete communication between treating teams most often occur - structured medication reconciliation specifically at these points is one of the highest-yield, most evidence-based medication safety interventions available

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