ATI RN
ATI Pathophysiology Exam 2
1. Which of the following describes the type of incontinence due to an increase in intraabdominal pressure such as coughing, sneezing, and laughing?
- A. Overflow
- B. Stress
- C. Mixed
- D. Functional
Correct answer: B
Rationale: The correct answer is B: Stress. Stress incontinence occurs when there is an increase in intraabdominal pressure, for example, during activities like coughing, sneezing, or laughing, leading to urine leakage. This type of incontinence is specifically triggered by physical movements or activities that put pressure on the bladder. Choices A, C, and D are incorrect because overflow incontinence is characterized by the bladder not emptying properly, mixed incontinence is a combination of stress and urge incontinence, and functional incontinence is typically due to physical or cognitive impairments.
2. A patient has been prescribed mifepristone (RU-486) to terminate a pregnancy. How does this drug achieve its therapeutic effect?
- A. By inhibiting the action of progesterone, which is necessary to maintain pregnancy.
- B. By increasing estrogen levels, which induce uterine contractions.
- C. By altering the uterine lining, preventing implantation.
- D. By stimulating uterine contractions, which expel the embryo.
Correct answer: A
Rationale: Mifepristone (RU-486) functions by inhibiting the action of progesterone, a hormone crucial for maintaining pregnancy. By blocking progesterone, mifepristone disrupts the uterine environment necessary for pregnancy continuation, ultimately leading to termination. Choice B is incorrect because mifepristone does not increase estrogen levels; instead, it acts on progesterone. Choice C is incorrect as mifepristone's mechanism does not involve altering the uterine lining to prevent implantation. Choice D is incorrect because mifepristone does not directly stimulate uterine contractions; its primary action is through progesterone inhibition.
3. When caring for a patient with systemic lupus erythematosus (SLE), the disease the nurse is dealing with is an example of:
- A. Autoimmunity
- B. Alloimmunity
- C. Homoimmunity
- D. Alleimmunity
Correct answer: A
Rationale: When a nurse cares for a patient with systemic lupus erythematosus (SLE), the nurse is dealing with an autoimmune disease. In autoimmune diseases like SLE, the immune system mistakenly attacks the body's own tissues. Choice A, 'Autoimmunity,' is the correct answer because SLE is an example of the immune system attacking self-antigens, leading to tissue damage and inflammation. Choices B, C, and D are incorrect. Alloimmunity refers to the immune response against foreign antigens from members of the same species, homoimmunity is not a recognized term in immunology, and alleimmunity is not a valid term in this context.
4. Peritonitis is a condition that can result in serious complications. Identify one of the complications.
- A. Increased peristalsis
- B. Dizziness and malaise
- C. Sepsis and shock
- D. Nausea and vomiting
Correct answer: C
Rationale: Corrected Rationale: Peritonitis can lead to severe complications such as sepsis and shock due to the infection spreading in the abdominal cavity. Sepsis is a systemic inflammatory response to infection, and shock is a life-threatening condition where the body's organs are not receiving enough blood flow. Choices A, B, and D are incorrect. Increased peristalsis is not a typical complication of peritonitis; dizziness and malaise, as well as nausea and vomiting, are symptoms rather than complications of the condition.
5. A 10-year-old male is stung by a bee while playing in the yard. He experiences a severe allergic reaction and has to go to the ER. The nurse providing care realizes this reaction is the result of:
- A. Toxoids
- B. IgA
- C. IgE
- D. IgM
Correct answer: C
Rationale: The correct answer is C: IgE. A severe allergic reaction, such as the one experienced by the 10-year-old male after being stung by a bee, is mediated by IgE. IgE is involved in common allergic responses, triggering the release of histamine and other chemicals that lead to allergy symptoms. Choice A, Toxoids, are inactivated toxins used in vaccines. Choice B, IgA, is mainly found in mucosal areas and secretions, playing a role in mucosal immunity. Choice D, IgM, is the first antibody produced in response to an infection.
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