What is the hang time for closed system enteral feeding, and how does it compare to open feeding systems?

What is the hang time for closed system enteral feeding, and how does it compare to open feeding systems?

• A. 8-12 hours; 24-48 hours for open
• B. 72 hours; 24-48 hours for open
• C. 24-48 hours; 8-12 hours for open
• D. 6-12 hours; 8-12 hours for open

Answer: (C)

Hang time indicates how long a prepared enteral feeding can safely remain in the system before it should be discarded. Closed-system feeds are prefilled and sterile, so they involve less handling and less exposure to air, allowing a longer hang time—typically 24 to 48 hours when kept under proper storage and use conditions. Open-system feeds require transferring formula into bags or syringes, increasing the risk of contamination, which necessitates shorter hang times—usually about 8 to 12 hours at room temperature. The pairing in this question matches that distinction: 24–48 hours for closed systems and 8–12 hours for open systems. Other options imply either too long or too short a hang time for one of the system types, which would raise contamination risk or suggest unrealistic safety margins.

Hang time indicates how long a prepared enteral feeding can safely remain in the system before it should be discarded. Closed-system feeds are prefilled and sterile, so they involve less handling and less exposure to air, allowing a longer hang time—typically 24 to 48 hours when kept under proper storage and use conditions. Open-system feeds require transferring formula into bags or syringes, increasing the risk of contamination, which necessitates shorter hang times—usually about 8 to 12 hours at room temperature.

The pairing in this question matches that distinction: 24–48 hours for closed systems and 8–12 hours for open systems. Other options imply either too long or too short a hang time for one of the system types, which would raise contamination risk or suggest unrealistic safety margins.