Mã vạch trên vòng tay bệnh nhân: Thiết kế và tiêu chuẩn an toàn

Patient Wristband Barcodes: Design & Safety Standards

Patient identification wristbands with barcodes are a cornerstone of hospital safety. The barcode links the physical patient to their electronic health record, enabling verification at every clinical touchpoint from medication administration to blood transfusion.

Wristband Barcode Requirements

A patient wristband barcode must:

• Be scannable from a wrist-worn position (curved surface)
• Survive hand washing, cleaning agents, and body fluids
• Remain readable for the duration of the hospital stay
• Encode a unique patient identifier
• Be readable by all clinical scanning devices

Symbology Selection

Code 128 is the most common choice for patient wristbands, offering a good balance of density and compatibility.

Data Encoded

The barcode typically encodes a patient encounter number or medical record number (MRN), not personally identifiable information:

• Encounter number: Unique per hospital visit
• Medical record number: Unique per patient across visits
• Composite: Some systems encode both

Sensitive data (name, DOB, diagnosis) is never encoded in the barcode; it is retrieved from the EHR using the scanned identifier.

Wristband Materials

For standard hospital stays (1-7 days), Tyvek wristbands with thermal transfer printing are the most cost-effective. For extended stays or special environments (neonatal, psychiatric), more durable materials are required.

Joint Commission Standards

The Joint Commission requires:

• Two patient identifiers for every clinical interaction
• At least one identifier on the wristband (typically barcode-enabled)
• Wristband applied at admission and verified at every care event
• Procedure for patients who cannot wear wristbands (burns, newborns)

Color Coding

Standardized wristband colors convey clinical alerts:

The barcode is on the white identification band; colored alert bands are separate and do not carry barcodes.

Printing and Application

1. Admissions staff enters patient data in the HIS/EHR
2. Wristband printer generates a band with barcode and human-readable text
3. Staff verifies the band matches the patient
4. Band is applied and the patient verbally confirms their identity
5. Band is checked at every clinical scanning point

Troubleshooting Scan Issues

Common wristband scanning problems:

• Smeared print: Use thermal transfer (not direct thermal) for moisture resistance
• Creased barcode: Ensure barcode is positioned on the flat side of the wrist
• Faded barcode: Replace wristband if print quality degrades
• Scanner angle: Curved surface requires the scanner to be aligned properly