Which of the following is a postoperative risk factor specifically associated with older adults?

A. Using the same IV catheter for a second insertion attempt is not advisable. Once an IV catheter has been inserted, it should not be reused or reinserted in the same or a different site. If the initial insertion fails or if the catheter needs to be repositioned, a new sterile catheter should be used.
B. If there is any suspicion of contamination during the insertion of an IV catheter, it is important to replace the catheter to prevent infection. This is crucial for maintaining sterility and reducing the risk of introducing pathogens into the patient’s bloodstream.
C. The IV catheter should be removed once the course of IV antibiotics or any other IV therapy is completed, unless there is a specific medical reason to keep it in place. Leaving the catheter in place unnecessarily increases the risk of infection and other complications.
D. Disconnecting the IV infusion for a client to use the restroom is not typically recommended as a standard practice. Disconnecting can introduce risks of infection and requires thorough cleaning and handling. Instead, a safer practice is to secure the IV line and allow the client to use the restroom while keeping the infusion running, or use a specialized catheter with a secure, closed system.

A. 0.9% sodium chloride, also known as Normal Saline, is an isotonic solution. It has the same concentration of solutes as blood plasma, which means it does not change the cell's fluid volume but rather maintains it. It is not considered hypotonic.

B. 0.45% sodium chloride, commonly known as Half Normal Saline, is a hypotonic solution. It has a lower concentration of sodium chloride compared to the normal saline and is used to provide hydration and to help correct electrolyte imbalances by allowing water to move into the cells.
C. Dextrose 5% in Lactated Ringer's is not a hypotonic solution. It is actually a type of hypertonic solution. Initially, dextrose 5% is isotonic, but once the dextrose is metabolized, the solution becomes hypotonic due to the electrolyte content of Lactated Ringer’s. However, the classification is generally based on the solution before metabolism, and it is not commonly used as a hypotonic solution.
D. Lactated Ringer's solution is an isotonic solution. It contains electrolytes in concentrations similar to those found in the body's plasma, and it is used to restore fluids and electrolytes. It does not have a hypotonic effect on cells.