What factor can significantly shorten the lifespan of sterile items?

Inconsistent temperature is a significant factor that can shorten the lifespan of sterile items. Sterile items are typically stored in controlled environments to maintain their integrity and effectiveness. Temperature fluctuations can lead to condensation, contamination, or degradation of packaging materials, all of which compromise sterility.

Sterile items are ideally kept in stable, recommended temperature ranges to ensure that they remain free from microorganisms. If the temperature varies too much, it can create conditions that allow bacteria or mold to grow, especially if the items were not packaged properly to withstand such changes. Keeping sterile items at continuous, appropriate temperatures is crucial for maintaining their sterility until they are needed for use.

In contrast, appropriate lighting and low humidity generally do not play as critical roles in the deterioration of sterile items, and regular sanitation practices are essential for maintaining sterile environments rather than directly influencing the lifespan of the items themselves.