Why should vital signs equipment be cleaned and disinfected between patients?

• A. To prevent cross-contamination and maintain accuracy
• B. To reduce noise
• C. It is optional
• D. It increases device reading speed

Answer: (A)

Cleaning and disinfecting vital signs equipment between patients is essential to prevent cross-contamination and maintain accuracy of measurements. Surfaces like thermometers, blood pressure cuffs, pulse oximeters, and sensors can carry pathogens from one patient to the next; disinfecting between uses reduces infection risk and protects patient safety. Residues, oils, or fluids on sensors or cuffs can also interfere with proper contact and sensor function, leading to unreliable readings. Regular cleaning ensures both safety and reliable vital signs data that clinicians rely on to assess a patient’s condition. The other options don’t fit because reducing noise isn’t the goal of cleaning, making disinfection optional would compromise safety, and cleaning doesn’t speed up readings.