What is an example of a client's primary defense to infection?
Inflammation
Fever
Phagocytosis
Intact skin
The Correct Answer is D
Choice A reason: Inflammation is not an example of a client's primary defense to infection. Inflammation is a secondary defense to infection, which is activated after the primary defense has been breached. Inflammation is a complex process that involves the release of chemical mediators, the dilation of blood vessels, the increase of blood flow, the migration of white blood cells, and the formation of exudate. Inflammation aims to contain, neutralize, and eliminate the infectious agent and to repair the damaged tissue.
Choice B reason: Fever is not an example of a client's primary defense to infection. Fever is a secondary defense to infection, which is activated after the primary defense has been breached. Fever is an elevation of the body temperature above the normal range, which is usually 36.5 to 37.5 degrees Celsius or 97.7 to 99.5 degrees Fahrenheit. Fever is a systemic response to infection that is regulated by the hypothalamus, which is the part of the brain that controls the body's thermostat. Fever enhances the immune system's activity and inhibits the growth of some pathogens.
Choice C reason: Phagocytosis is not an example of a client's primary defense to infection. Phagocytosis is a secondary defense to infection, which is activated after the primary defense has been breached. Phagocytosis is a process that involves the engulfment and destruction of foreign particles, such as bacteria, by specialized cells, such as macrophages and neutrophils. Phagocytosis is a type of cellular immunity that eliminates the infectious agent and prevents its spread.
Choice D reason: Intact skin is an example of a client's primary defense to infection. Intact skin is the first and most important line of defense against infection, as it forms a physical barrier that prevents the entry of pathogens into the body. Intact skin also has chemical and biological properties that resist infection, such as the acidic pH, the secretion of sebum and sweat, and the presence of normal flora. Intact skin protects the underlying tissues and organs from infection and injury.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: Shearing or friction is the force that caused the injury, because it occurs when the skin and underlying tissues move in opposite directions, such as when the client slides down in bed. Shearing or friction can damage the blood vessels and reduce blood flow to the skin, resulting in tissue ischemia, necrosis, and ulceration.
Choice B reason: Pressure or gravity is not the force that caused the injury, because it occurs when the skin and underlying tissues are compressed between a bony prominence and an external surface, such as when the client lies on his back. Pressure or gravity can impair blood flow and oxygen delivery to the skin, resulting in tissue damage and ulceration.
Choice C reason: Chemical or pressure is not the force that caused the injury, because it occurs when the skin is exposed to a substance that causes irritation, inflammation, or corrosion, such as when the client has a wound dressing that contains an antiseptic or a topical agent. Chemical or pressure can damage the skin barrier and increase the risk of infection and delayed wound healing.
Choice D reason: Twisting and bending is not the force that caused the injury, because it occurs when the skin and underlying tissues are stretched or distorted, such as when the client twists his ankle or bends his knee. Twisting and bending can cause sprains, strains, or tears of the ligaments, tendons, or muscles.
Correct Answer is ["B","C","E"]
Explanation
Choice A reason: Obtaining a PAPR mask is not a step in preparing a sterile field. A PAPR mask is a powered airpurifying respirator that protects the wearer from airborne contaminants. It is not required for setting up a sterile field, unless the client has a highly infectious disease.
Choice B reason: Do not turn away from the sterile field is a step in preparing a sterile field. Turning away from the sterile field can contaminate the field or the items on it. The nurse should always face the sterile field and keep it in view.
Choice C reason: Add items to the sterile field by dropping them gently is a step in preparing a sterile field. Dropping items gently onto the sterile field prevents splashing or touching the field or the items. The nurse should open the sterile packages away from the field and drop the items close to the edge of the field.
Choice D reason: Covering the sterile field once it is set up is not a step in preparing a sterile field. Covering the sterile field can compromise its sterility and create moisture that can harbor microorganisms. The nurse should not cover the sterile field unless it is necessary to move it or store it for later use.
Choice E reason: Preparing the client before setting up the sterile field is a step in preparing a sterile field. Preparing the client involves explaining the procedure, obtaining consent, providing privacy, and positioning the client. The nurse should prepare the client before setting up the sterile field to avoid leaving the field unattended or exposing it to the client's body fluids.
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