a patient has acute respiratory failure arf which of the following would the nurse expect to find

ATI RN

ATI Pathophysiology Exam 2

1. A patient has acute respiratory failure (ARF). Which of the following would the nurse expect to find?

A. Alkalosis and hyperventilation
B. Hypoxemia and hypercapnia
C. Alkalosis and high potassium
D. Elevated sodium and acidosis

Correct answer: B

Rationale: In acute respiratory failure, hypoxemia (low blood oxygen) and hypercapnia (high blood carbon dioxide) are commonly observed. Choice A is incorrect because alkalosis (high pH) and hyperventilation are not typically seen in acute respiratory failure. Choice C is incorrect as it mentions alkalosis and high potassium, which are not characteristic of acute respiratory failure. Choice D is also incorrect because elevated sodium and acidosis are not typically associated with acute respiratory failure.

2. Muscular dystrophy is a result of an abnormality of the muscle protein:

A. glycoprotein
B. dystrophin
C. troponin
D. actinomyosin

Correct answer: B

Rationale: Muscular dystrophy is primarily caused by mutations in the gene that provides instructions for making the protein dystrophin. Dystrophin plays a crucial role in maintaining the structure of muscle fibers. Glycoprotein is a general term for proteins with sugar molecules attached, not specifically related to muscular dystrophy. Troponin is a protein involved in muscle contraction regulation, and actinomyosin is not a specific muscle protein but a complex formed during muscle contraction. Therefore, the correct answer is dystrophin.

3. What action is specific to hormonal contraceptives and should be taught to this woman?

A. The cervical mucus is altered to prevent sperm penetration.
B. The release of follicle-stimulating hormone is increased to block fertility.
C. The maturation of the endometrial lining is activated by the contraceptive.
D. The pituitary gland increases the synthesis and release of luteinizing hormone.

Correct answer: A

Rationale: The correct action specific to hormonal contraceptives that should be taught to the woman is that they alter cervical mucus to prevent sperm penetration. This mechanism helps in preventing pregnancy by reducing the chances of sperm reaching the egg. Choices B, C, and D are incorrect. Choice B is inaccurate as hormonal contraceptives work by inhibiting ovulation rather than increasing follicle-stimulating hormone release. Choice C is incorrect as hormonal contraceptives do not activate the maturation of the endometrial lining; instead, they modify it to prevent implantation. Choice D is also incorrect as hormonal contraceptives do not stimulate the pituitary gland to increase luteinizing hormone synthesis and release.

4. What is the purpose of the inflammatory response?

A. Prevents blood from entering the injured tissue
B. Elevates body temperature to prevent spread of infection
C. Prevents formation of abscess
D. Minimizes injury and promotes healing

Correct answer: D

Rationale: The inflammatory response is a protective mechanism triggered by tissue damage or infection. It aims to minimize injury by removing harmful stimuli and initiating the healing process. Choice A is incorrect because blood flow to the injured tissue is actually increased to deliver immune cells and nutrients. Choice B is incorrect because while fever is a response to infection, it is not the primary purpose of the inflammatory response. Choice C is incorrect because abscess formation can occur as part of the inflammatory response in an attempt to contain an infection.

5. A patient underwent an open cholecystectomy 4 days ago, and her incision is now in the proliferative phase of healing. The nurse knows that the next step in the process of wound healing is:

A. Inflammation
B. Maturation
C. Remodeling
D. Coagulation

Correct answer: C

Rationale: In the context of wound healing, after the proliferative phase comes the remodeling phase. During the remodeling phase, the wound gains strength as collagen fibers reorganize, and the scar matures. Inflammation is the initial phase of healing, where the body responds to injury with redness, swelling, and warmth. Maturation is the final stage where the scar tissue continues to undergo changes but is not the immediate next step after the proliferative phase. Coagulation is the process of blood clot formation and is not a phase in wound healing.