Which two procedures require a non-sterile aseptic technique?

The insertion of a nasogastric tube is performed using a non-sterile aseptic technique because the procedure involves placing a tube through the nostril and into the stomach, which does not require the strict sterility required for other invasive procedures. Aseptic technique in this context refers to minimizing the risk of introduction of pathogens, but it does not necessitate a sterile environment, as the nasal passages and stomach are not considered sterile sites.

Similarly, the insertion of a barium enema tip also utilizes a non-sterile technique. This procedure involves introducing contrast material into the rectum for imaging purposes and, similar to the nasogastric tube insertion, relies on preventing contamination rather than requiring a completely sterile field.

In contrast, the operation of a surgical scalpel typically involves a sterile technique since surgical procedures require the prevention of infections in open wounds, and intravenous medication administration can also require a sterile technique to avoid introducing pathogens directly into the bloodstream. Thus, understanding the context and procedural requirements for various techniques is crucial in determining the correct application of aseptic protocols.