Final answer:
Opened single-dose ampules should not be saved for future use to prevent contamination and infection, as they are intended only for a single use and lack antimicrobial preservatives.
Step-by-step explanation:
Opened single-dose ampules shall NOT be saved for future use once they have been opened. These are sterile preparations intended for use in a single patient for a single case, procedure, injection. Use of single-dose or single-use vials is intended to prevent contamination and infection that can occur when multiple doses are drawn from the same vial. For safety reasons, any remaining contents of opened single-dose ampules must be discarded and not reused. Because they lack antimicrobial preservatives, opened ampules can become a source of contamination and potentially lead to serious infections.