Medication Safety: High-Alert Medications and LASA Drugs
Medication errors remain one of the most common types of adverse events in healthcare. Two categories that pose particular risk are high-alert medications and look-alike, sound-alike (LASA) drugs. Understanding the strategies for managing these risks is critical for CPHQ exam preparation and for practice as a quality professional.
High-Alert Medications
High-alert medications are drugs that carry a heightened risk of causing significant patient harm when used in error. The Institute for Safe Medication Practices (ISMP) maintains a list of these medications, which includes anticoagulants (such as heparin and warfarin), insulins, opioids, neuromuscular blocking agents, chemotherapy agents, and concentrated electrolytes (such as potassium chloride). While these medications may not cause errors more frequently than others, the consequences of errors are far more severe.
Safeguards for High-Alert Medications
Organizations should implement multiple safeguards for these drugs. Common strategies include independent double checks before administration, standardized concentrations and dosing protocols, automated dispensing cabinet alerts, limited access to certain medications, patient monitoring requirements after administration, and tall-man lettering on labels. Smart infusion pumps with dose-error reduction software (also called drug libraries with hard and soft limits) are another critical safeguard.
Look-Alike, Sound-Alike (LASA) Drugs
LASA drugs have names that look or sound similar to other medications, increasing the risk of confusion. Examples include hydroxyzine and hydralazine, or metformin and metronidazole. The Joint Commission requires organizations to identify and manage their own LASA drug lists. Tall-man lettering (capitalizing differing portions of drug names, such as hydrOXYzine versus hydrALAZINE) is one of the most widely used strategies to distinguish these medications.
Additional LASA Strategies
Beyond tall-man lettering, organizations use physical separation of LASA drugs in storage areas, electronic alerts in computerized prescriber order entry (CPOE) systems, barcode verification at the point of administration, and both the brand and generic name on labels when helpful. The ordering process should include the indication for use so that pharmacists can verify the intended medication. Limiting verbal orders for LASA drugs also reduces confusion.
CPHQ Exam Tips
For the exam, know that ISMP is the primary resource for high-alert medication lists. Understand that the focus should be on system-level safeguards rather than relying on individual vigilance alone. Be prepared to identify which strategies are most effective for reducing LASA errors and recognize that a combination of approaches (redundant safeguards) provides the best protection.