Correct Answer: C

Rationale: Calf swelling, redness, and tenderness are classic signs of thrombophlebitis. The swelling occurs due to the formation of a blood clot in the deep veins of the calf, leading to inflammation and potential obstruction of blood flow. Bladder distention (Choice A) is more indicative of urinary retention, decreased blood pressure (Choice B) can be seen in conditions like shock, and diminished bowel sounds (Choice D) may suggest gastrointestinal issues, none of which are directly related to thrombophlebitis.

Correct Answer: C

Rationale: The correct answer is C: Friction. The amount of friction is crucial in effective hand hygiene to remove microorganisms. Rubbing hands together with friction helps to dislodge and remove dirt, oils, and microorganisms. While temperature and soap are important factors in hand hygiene, the mechanical action of friction plays a more significant role in physically removing contaminants. Time is also important in hand hygiene practice, but without adequate friction, the effectiveness of the process is compromised.

Correct Answer: B

Rationale: To calculate the flow rate in drops per minute (gtt/min), the formula is Total volume (mL) · Time (min) · Drop factor (gtt/mL). In this case, 1000 mL · 240 min · 20 gtt/mL = 83 gtt/min. Therefore, setting the flow rate to 83 gtt/min ensures the correct administration of the IV fluids and medication. Choices A, C, and D are incorrect as they do not align with the correct calculation based on the provided information.

Correct Answer: A

Rationale: The correct action for the nurse to take in this situation is to complete the intermittent suction of the nasopharynx. Since the oxygen saturation remains stable at 94%, which was the initial reading, it indicates that the procedure is not causing a significant drop in oxygen levels. Stopping the suctioning or applying oxygen may not be necessary as the saturation level is within an acceptable range. Repositioning the pulse oximeter clip is unlikely to change the reading significantly. Therefore, completing the procedure maintains care consistency and effectiveness, ensuring proper airway management without unnecessary interventions. Choices B, C, and D are incorrect because repositioning the pulse oximeter clip, stopping suctioning until a higher reading is achieved, and applying oxygen are not warranted based on the stable oxygen saturation level of 94% throughout the procedure.

Correct Answer: D

Rationale: Discontinuing the infusion is the first step in addressing potential complications such as phlebitis or infection. It is crucial to prevent further infusion-related damage by stopping the source of the issue. Obtaining a specimen for culture (Choice A) can be considered later to identify the specific microorganism causing the infection. Applying a warm compress (Choice B) or administering analgesics (Choice C) may provide comfort but do not address the underlying issue of infection or phlebitis, which requires immediate intervention by discontinuing the infusion.