Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
A, A Mapleson D breathing circuit with an in-line suction catheter. B, A Mapleson D breathing circuit with a viral filter at the distal end. Not suitable for infants, neonates, and small children because of the dead space of the filter and potential rebreathing. C, A Mapleson D breathing circuit with a viral filter proximal to the fresh gas flow. Preferred in infants, neonates, and small children.
