A nurse is attending to a client with a peripheral vascular access device who is experiencing pain, redness, and swelling at the site. What action should the nurse take to alleviate the pain after removing the device?

Choice A rationale:
Skin and mucous membranes are the most effective and crucial barriers to infection. They provide a continuous physical barrier that prevents pathogens from entering the body. Here's a detailed explanation of their protective mechanisms:
1. Physical Barrier:
Skin: The outermost layer of skin, the epidermis, is composed of tightly packed cells that are difficult for pathogens to penetrate. It's also covered in a layer of sebum, an oily substance that helps to repel water and microorganisms.
Mucous membranes: These moist linings cover the openings of the body, such as the nose, mouth, eyes, and digestive, respiratory, and urogenital tracts. They produce mucus, a sticky substance that traps pathogens and prevents them from entering the body. Mucus also contains enzymes and antibodies that can kill certain pathogens.
2. Chemical Barrier:
Skin and mucous membranes secrete a variety of substances that have antimicrobial properties. These include: Sebum: Contains fatty acids that can kill bacteria and fungi.
Sweat: Contains salt and lysozyme, an enzyme that can break down bacterial cell walls. Saliva: Contains enzymes that can break down food and kill bacteria.
Gastric acid: The highly acidic environment of the stomach kills most pathogens that are ingested.
3. Immune Barrier:
Skin and mucous membranes are home to a diverse community of microbes, known as the microbiome. These microbes play an important role in protecting against infection by competing with pathogens for resources and space.
Mucous membranes contain specialized immune cells, such as M cells and dendritic cells, that can recognize pathogens and initiate an immune response.
In contrast, the other choices are less effective barriers to infection:
Choice B: Gastrointestinal secretions, such as gastric acid, do play a role in preventing infection, but they are not as effective as skin and mucous membranes. Pathogens can still enter the body through the digestive tract, even in the presence of gastric acid.
Choice C: Colonization by host bacteria can actually help to protect against infection by competing with pathogens. However, it is not a primary barrier to infection.
Choice D: Inflammatory processes are a response to infection, not a barrier to it. They occur after pathogens have already entered the body.

Rationale for Choice A:
Documenting and continuing to monitor is a crucial aspect of nursing care; however, in this scenario, it would not be the first action to take. The significant drop in blood pressure warrants immediate intervention to prevent potential complications.
While monitoring is essential, it does not actively address the underlying cause of the hypotension. Relying solely on monitoring could delay necessary interventions and potentially compromise patient safety.
It's important to balance monitoring with timely interventions to ensure optimal patient outcomes. In this case, calling for assistance takes priority over documentation and continued monitoring.
Rationale for Choice B:
Repeating the blood pressure in 15 minutes could delay critical interventions if the hypotension is severe. Timely action is crucial to maintain adequate tissue perfusion and prevent organ damage.
Waiting to recheck the blood pressure could potentially worsen the patient's condition and lead to adverse outcomes. It's essential to act promptly when a significant change in vital signs occurs.
Rationale for Choice D:
While notifying the primary healthcare provider is an important step, it may not be the most immediate action in this situation. The Rapid Response Team is specifically trained to handle acute patient deterioration and can provide timely interventions.
The Rapid Response Team can initiate life-saving measures, such as administering fluids or medications, while the primary healthcare provider is being notified. This ensures that the patient receives prompt and appropriate care.
Rationale for Choice C:
Calling the Rapid Response Team is the most appropriate first action in this scenario because it ensures a rapid and coordinated response to the patient's hypotension.
The Rapid Response Team can quickly assess the patient, initiate interventions, and potentially prevent further complications. They can also facilitate communication and collaboration among healthcare providers.
Early activation of the Rapid Response Team has been shown to improve patient outcomes in various clinical settings, including postoperative care.