Chapter 2 of 426.25% of exam

Patient Safety and Quality Assurance

Patient safety is the second largest area of the PTCE and covers the habits, checks, and protective equipment that stop an error before it reaches a patient. This chapter explains how errors happen, where verification occurs, and what a technician may and may not do alone.

Error-Prevention Strategies

Most medication errors trace back to predictable failure points such as ambiguous handwriting, unclear abbreviations, and look-alike packaging. Pharmacies reduce risk by standardizing how information is written, displayed, and confirmed. Technicians should treat any ambiguity as a stop point rather than a guess.

Avoid error-prone abbreviations
Do not use U for units, IU for international units, QD or QOD for daily and every other day, or MS for morphine sulfate; spell these out instead.
ISMP List of Error-Prone Abbreviations, Symbols, and Dose Designations
Zeros in dose expressions
Always write a leading zero before a decimal point, as in 0.5 mg, and never write a trailing zero, as in 5.0 mg, because the decimal can be missed and cause a tenfold error.
ISMP List of Error-Prone Abbreviations, Symbols, and Dose Designations
Barcode scanning
Scanning the stock bottle barcode during filling confirms that the product in hand matches the product on the label and catches selection errors that the eye misses.
Clarify, do not assume
An illegible, incomplete, or clinically questionable order must be routed to the pharmacist for clarification with the prescriber, never interpreted by the technician.
Standardized workflow and workspace
One prescription at a time, an uncluttered counter, and consistent placement of the label, stock bottle, and vial reduce mix-ups when the pharmacy is busy.
Root cause thinking
Quality-assurance programs examine the system conditions that allowed an error rather than blaming the individual, so that fixes prevent repeats.

Verification Points in the Filling Process

A prescription passes several checkpoints between intake and hand-off, and each one is designed to catch a different kind of mistake. Technicians perform the mechanical checks while the pharmacist performs the clinical and final product check. Knowing which check belongs where prevents gaps.

The rights of medication use
Confirm the right patient, right drug, right dose and strength, right route, right time or frequency, and right documentation at every checkpoint.
Two patient identifiers
Verify identity using at least two identifiers such as full name and date of birth, since name alone frequently matches more than one patient in the system.
NDC number structure
The National Drug Code has three segments identifying the labeler, the product (drug, strength, and dosage form), and the package size, so all three must match the order.
FDA National Drug Code Directory
Lot number and expiration check
Confirm that the stock is not expired and record lot and expiration where required, especially for vaccines, compounded preparations, and repackaged products.
Pharmacist final verification
The pharmacist must complete the final check of the finished product against the original order before it is released to the patient or the nursing unit.
Point of sale and hand-off
At pickup, verify name and address on the bag, confirm the patient is receiving the correct prescriptions, and route any counseling request to the pharmacist.

Hygiene, PPE, and Aseptic Practice

Sterile compounding depends on removing contamination from the person, the surfaces, and the air. Garbing and hand hygiene follow a fixed sequence because each step protects the one after it. Cleaning and disinfection are scheduled tasks, not occasional ones.

Remove personal items first
Before entering the compounding area, remove outer garments, jewelry from hands and wrists, cosmetics, and artificial nails, and cover exposed hair.
USP <797>
Garbing sequence
Don shoe covers, head and facial hair covers, and a face mask first, then perform hand hygiene, then don the nonshedding gown, and put on sterile gloves last inside the buffer area.
USP <797>
Hand hygiene technique
Wash hands and forearms to the elbow with soap and water for the required duration, dry with a lint-free towel, and follow with a persistently active alcohol-based hand rub before gloving.
USP <797>
Sterile 70 percent alcohol
Disinfect gloves, vial stoppers, ampule necks, and the interior surfaces of the primary engineering control with sterile 70 percent isopropyl alcohol and allow it to dry.
USP <797>
Air quality classification
Sterile preparation occurs in ISO Class 5 air inside the primary engineering control, which sits in a cleaner-air buffer room supported by an ante-room.
USP <797>
Work inside the hood correctly
Keep materials at least six inches inside a laminar airflow workbench, avoid blocking first air between the filter and the critical site, and never bring in unnecessary items.

Hazardous Drug Handling

Hazardous drugs, including many chemotherapy agents, can harm the worker who prepares them as well as the patient who receives them. Federal standards require containment at every stage from receiving to disposal. Personal protective equipment for these drugs exceeds ordinary sterile garb.

Identify hazardous drugs
The pharmacy must maintain a list of the hazardous drugs it handles, based on the national hazardous drug list, and assess the risk of each dosage form.
NIOSH List of Hazardous Drugs in Healthcare Settings
Containment and negative pressure
Hazardous drugs are compounded in a containment primary engineering control located in a negative-pressure room that is externally vented and physically separated from nonhazardous compounding.
USP <800>
Chemotherapy PPE
Wear two pairs of chemotherapy-rated gloves tested against permeation, a disposable back-closing gown made of a coated material, eye and face protection when splashing is possible, and a respirator when required.
USP <800>
Segregated receiving and storage
Hazardous drugs are unpacked in a neutral or negative-pressure area, never in a sterile compounding area, and are stored separately from other stock to limit contamination.
USP <800>
Spill response
A hazardous drug spill kit must be available wherever these drugs are handled, and trained personnel contain, clean, and document any spill following the pharmacy's written procedure.
USP <800>
Labeling and waste disposal
Finished hazardous preparations carry a warning label and are transported in sealed containers, while contaminated materials go into designated hazardous waste streams rather than regular trash.
USP <800>

Event Reporting and Pharmacist-Only Tasks

Reporting turns a single mistake into system-wide learning, and several national programs collect that information. Reporting is expected for near misses as well as errors that reached the patient. Certain judgment-based duties may never be delegated to a technician.

Internal event reporting
Document errors and near misses in the pharmacy's incident system promptly and factually, describing what happened rather than assigning blame.
MedWatch
Serious adverse events, product quality problems, and suspected product defects are reported to the FDA voluntary reporting program.
FDA MedWatch
National medication error reporting
Errors and hazardous conditions can be submitted to the national medication error reporting program so that alerts and prevention guidance reach other pharmacies.
ISMP National Medication Errors Reporting Program (MERP)
Vaccine adverse events
Adverse events following immunization are reported to the federal vaccine adverse event system.
Vaccine Adverse Event Reporting System (VAERS)
Pharmacist-only clinical duties
Only the pharmacist may perform the drug utilization review, resolve clinical alerts, counsel the patient, accept a new oral prescription from a prescriber, and give the final verification.
Omnibus Budget Reconciliation Act of 1990 (OBRA 90)
Technician scope limits
Technicians may not make clinical judgments or transfer controlled substance prescriptions, and any expanded duty such as tech-check-tech applies only where state law and pharmacy policy specifically authorize it.
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Practice questions on Patient Safety and Quality Assurance
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Last updated: July 2026

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