following cardiothoracic surgery where controlled therapeutic hypothermia was utilized to decrease metabolic demands the nurse responsible for monitor

ATI RN

ATI Pathophysiology Quizlet

1. Following cardiothoracic surgery where controlled therapeutic hypothermia was utilized to decrease metabolic demands, the nurse responsible for monitoring this client postoperatively should be assessing for which potential complication related to cold cardioplegia?

A. Thrombocytopenia
B. Hypokalemia
C. Hyperglycemia
D. Coagulopathy

Correct answer: D

Rationale: Coagulopathy is the correct answer. During therapeutic hypothermia, which lowers the body's temperature to reduce metabolic demands post-surgery, coagulopathy, or impaired blood clotting, is a potential complication due to the effects of cold cardioplegia. Thrombocytopenia (choice A) refers to a low platelet count and is not directly related to cold cardioplegia. Hypokalemia (choice B) is a condition of low potassium levels, and hyperglycemia (choice C) is high blood sugar levels, neither of which are primary complications of cold cardioplegia.

2. A patient is being treated with raloxifene (Evista) for osteoporosis. What should the nurse teach the patient about this medication?

A. It is used as a selective estrogen receptor modulator to prevent bone loss.
B. It works by decreasing bone formation and increasing bone resorption.
C. It should be taken with food to reduce gastrointestinal side effects.
D. It may cause weight gain and fluid retention.

Correct answer: C

Rationale: The correct answer is C. Raloxifene is a selective estrogen receptor modulator (SERM) used to prevent bone loss. It should be taken with food to reduce gastrointestinal side effects, not on an empty stomach. Choices A and B are incorrect because raloxifene is indeed a SERM that prevents bone loss, but it does not directly work by increasing bone formation or decreasing bone resorption. Choice D is incorrect as weight gain and fluid retention are not common side effects of raloxifene.

3. Macular degeneration occurs as a result of:

A. loss of lens accommodation
B. detachment of the retina
C. increased intraocular pressure
D. impaired blood supply leading to cellular waste accumulation and ischemia

Correct answer: D

Rationale: Macular degeneration is a condition that affects the macula, a part of the retina responsible for central vision. It is primarily caused by impaired blood supply to the macula, leading to cellular waste accumulation and ischemia. This results in the death of photoreceptor cells and ultimately vision loss. Choices A, B, and C are incorrect because macular degeneration is not related to the loss of lens accommodation, detachment of the retina, or increased intraocular pressure. The correct answer directly addresses the underlying pathophysiology of macular degeneration.

4. Which of the following characterizes ductal carcinoma in situ?

A. It is less common than lobular carcinoma in situ.
B. Malignant cells have not invaded the stroma.
C. It is considered a cancer precursor.
D. Malignant cells have not invaded the stroma; it is considered a cancer precursor and has a higher risk for invasive cancer compared to lobular carcinoma in situ.

Correct answer: D

Rationale: The correct answer is that ductal carcinoma in situ is characterized by malignant cells that have not invaded the stroma, making it a cancer precursor with a higher risk for invasive cancer compared to lobular carcinoma in situ. Choice A is incorrect because ductal carcinoma in situ is more common than lobular carcinoma in situ. Choice B is incorrect as it only partially describes ductal carcinoma in situ without mentioning its potential for progression to invasive cancer. Choice C is incorrect because it does not capture the complete characteristics of ductal carcinoma in situ, which include the risk for invasive cancer.

5. A 10-year-old male presents to his primary care provider reporting wheezing and difficulty breathing. History reveals that both of the child's parents suffer from allergies. Which of the following terms would be used to classify the child?

A. Desensitized
B. Atopic
C. Hyperactive
D. Autoimmune

Correct answer: B

Rationale: In this case, the correct term to classify the child is 'Atopic.' Atopic individuals have a genetic predisposition to developing allergic conditions, as seen in this patient with a family history of allergies. 'Desensitized' refers to reduced sensitivity to an allergen, which is not the case here. 'Hyperactive' relates to an exaggerated response, and 'Autoimmune' involves the immune system attacking its own cells, neither of which accurately describes the child's classification based on the provided history.