A nurse on a medical-surgical unit is planning to delegate tasks to an adult volunteer. Which of the following tasks should the charge nurse avoid assigning to the volunteer?

Choice A rationale:
Urine collection from an indwelling catheter is a sterile procedure that requires aseptic technique to prevent contamination of the specimen and potential urinary tract infection. Assistive personnel (AP) may not have the necessary training in sterile technique and therefore should not be delegated this task. Additionally, the nurse needs to assess the patient for any signs of urinary tract infection or other complications before collecting the urine specimen, which is within the scope of nursing practice.

Choice B rationale:
Blood collection for PaCO2 (partial pressure of carbon dioxide) is an invasive procedure that requires assessment of the patient's condition, appropriate site selection, and proper technique to ensure accurate results. This task is within the scope of nursing practice and should not be delegated to AP.

Choice C rationale:
Wound drainage collection for culture also requires aseptic technique to prevent contamination of the specimen and ensure accurate results. The nurse needs to assess the wound for signs of infection, choose the appropriate collection method, and ensure proper labeling and transport of the specimen. This task is within the scope of nursing practice and should not be delegated to AP.

Choice D rationale:
Random stool specimen collection is a non-invasive procedure that does not require sterile technique. AP can be trained to collect random stool specimens safely and effectively, following standard precautions for handling body fluids.

Choice A rationale:
Coughing and deep breathing: These techniques directly promote airway clearance by mobilizing and expelling secretions from the lungs. They are essential for clients with pneumonia, as the buildup of secretions can obstruct the airways and impair gas exchange.
Hydration maintenance: Adequate hydration helps to thin secretions, making them easier to cough up and clear from the lungs. It also helps to prevent dehydration, which can worsen respiratory symptoms.

Choice B rationale:
Keeping the head of the bed elevated: This can help to improve breathing by decreasing the work of breathing and promoting lung expansion. However, it is not the most effective intervention for directly clearing secretions from the lungs.

Choice C rationale:
Preparation for insertion of a tracheostomy tube: This is a more invasive intervention that may be necessary in severe cases of airway obstruction. However, it is not the priority intervention for a client with ineffective airway clearance related to pneumonia.

Choice D rationale:
Providing supplemental oxygen: This can help to improve oxygenation in clients with pneumonia. However, it does not directly address the problem of ineffective airway clearance.