08 High-Alert Medicines and Error Prevention

Recognize high-alert medicines

A High-alert medication can cause serious harm if used incorrectly. Errors are not necessarily more frequent with these medicines, but the consequences may be more severe. Which medicines are considered high-alert can vary by care setting and organization, so check the current organizational list and the patient-specific order.

Common examples include insulin, anticoagulants, opioids, chemotherapy, neuromuscular blockers, and concentrated electrolytes such as potassium chloride for injection. Too much insulin can cause severe hypoglycemia; an anticoagulant error can cause serious bleeding; and an opioid dosing error can suppress breathing. Risk depends on the medicine, dose, route, patient, and clinical context.

Verify medicines before administration

Medication safety is a shared responsibility across prescribing, dispensing, preparation, administration, and monitoring. Use layered safeguards rather than relying on memory, warning labels, or one person’s vigilance. Safeguards can include standardized concentrations and protocols, restricted access, clear labeling, decision-support tools, barcode checks, and targeted independent double checks.

Before administration, verify the order and the patient using the required identifiers. Confirm that the product matches the order and intended treatment, and check the dose, units, concentration, and calculation. For weight-based dosing, check the calculation against an authoritative reference or protocol.

Also confirm the route, timing, formulation, and rate where applicable. Review patient-specific risks, including allergies, contraindications, relevant laboratory results, current medicines, and required hold parameters. For infusions, verify the pump settings and line. Know which effects and adverse reactions to monitor for and when to escalate concerns.

Follow local policy for barcode scanning and other required checks. Technology supports, but does not replace, clinical judgment. Use an Independent double check only when required or selected by organizational risk controls. The second checker should independently verify the specified items—for example, the patient, medicine, concentration, calculation, and infusion rate—not simply agree with the first person. Manual double checks should be limited to selected high-risk situations and combined with stronger process safeguards.

For a high-alert insulin infusion, check the patient, prescribed dose and units, product concentration, pump rate, and applicable glucose-monitoring plan. If the order, label, calculation, or pump setting does not match, pause and clarify it before administration.

Store, prepare, and handle medicines safely

Store medicines according to manufacturer instructions and facility policy. Keep them secure and within required temperature conditions; separate or otherwise organize them to reduce selection errors. Apply extra controls to high-alert medicines, such as limiting access, standardizing available strengths or concentrations, and separating look-alike products. A shelf warning alone is not enough to prevent errors.

Prepare medicines in a clean, focused area. Compare the product with the order and label, and avoid interruptions when possible. Do not use a product if its identity, integrity, storage history, or expiration is uncertain; seek pharmacy guidance or follow facility policy.

Label a prepared medicine or solution promptly if it will not be administered immediately or has been transferred from its original packaging. Include information required by policy, such as the medicine name, strength or concentration, amount, diluent, and expiration date and time.

A Hazardous drug may pose occupational exposure risks. Use the required procedures and protective equipment when handling such medicines. Follow the local hazardous-drug program for preparation, administration, spills, and disposal.

Respond to errors and near misses

If an error may have reached a patient, assess the patient first, provide or obtain urgent care as indicated, and promptly notify the appropriate clinician and pharmacist. Follow facility procedures for monitoring, disclosure, documentation, and reporting.

Report Near miss events as well as errors. They can expose weaknesses in labels, storage, communication, workflow, or technology before a patient is harmed. A Medication error is a preventable event that may lead to inappropriate use or harm. Report errors and contributing product or labeling problems according to applicable procedures; the FDA encourages these reports.