HESI Fundamentals

Correct Answer: B

Rationale: If a sterile field becomes wet or damp during a procedure, it is considered contaminated as moisture can allow organisms to wick from the surface and compromise the sterility of the field. It is essential to maintain the integrity of the sterile field to prevent infections and ensure patient safety.

Correct Answer: C

Rationale: Keeping the drainage system below the level of the chest (C) is crucial to ensure proper drainage and prevent backflow of air or fluid into the chest cavity. This position helps maintain the integrity of the closed drainage system. Ensuring the chest tube remains unclamped at all times (A) allows for continuous drainage. Emptying the chest tube (B) should be done as needed, not routinely every 2 hours. Assessing for subcutaneous emphysema (D) is important but not the most critical action in this scenario.

Correct Answer: C

Rationale: Pinching the skin before inserting the needle is essential in elevating the subcutaneous tissue away from the muscle. This technique ensures that the medication is administered into the correct tissue layer, promoting proper absorption and decreasing the risk of injecting into muscle tissue.

Correct Answer: C

Rationale: An elevated AST level following chest pain and shortness of breath is suggestive of myocardial infarction. AST is released from damaged heart muscle cells during a heart attack, indicating cardiac involvement. This enzyme is not specific to liver disease, gallbladder disease, or skeletal muscle injury in this clinical context.

Correct Answer: B

Rationale: For a client with redness in the sacral area, the most critical instruction is to change positions in the chair at least every hour. This is crucial to prevent pressure ulcers, which can develop due to prolonged pressure on the skin and underlying tissues. Regular position changes help relieve pressure on vulnerable areas, promoting circulation and reducing the risk of skin breakdown and pressure ulcer formation.