CNOR Study Guide 2026

Capnography provides real-time confirmation of endotracheal tube placement and immediately detects ventilator disconnection, esophageal intubation, or airway obstruction.

Explanation: Safety requirements for wrapping materials used during sterilization include resistance to tears, punctures, and abrasions. Other prerequisites are as follows: The ability to maintain the sterility of the contents until opening. Enough porosity to allow for steam or gas penetration and venting. Effective air and microorganism barrier. Secure enclosure of contents for moisture resistance. The absence of toxic ingredients and non-fast dyes is sufficient to maintain seal integrity. Aseptic delivery of contents to the sterile field requires correct labeling. Appropriate size for even content distribution.

The fire triangle consists of an ignition source (ESU), a fuel source (e.g., alcohol-based prep), and an oxidizer (e.g., oxygen). Allowing flammable agents like alcohol-based skin prep to fully dry and for vapors to dissipate is a critical step to eliminate the fuel source and prevent a surgical fire. While other options are components of fire safety, pooled or vaporized alcohol prep is a common and preventable fuel source.

Primary intention (primary closure) involves directly approximating clean wound edges, resulting in minimal scarring and faster healing.

It is important to make sure that the prep solutions have dried before using surgical drapes to guarantee proper draping. Pooled preparation fluids may harm your skin. These substances can catch fire while they're still in liquid form, especially ones that contain alcohol.

According to AORN recommended practices, once a sterile solution container is opened, its edge is considered contaminated. Therefore, the entire contents should be poured at once, and the container should be discarded. Placing the cap on the field is incorrect as its outside is non-sterile. Holding the bottle with the label toward the palm can prevent dripping onto and obscuring the label, but the primary principle is to pour the entire contents. A distance of 12 inches is excessive and increases the risk of splashing.