A nurse is teaching an in-service about cancer at a staff meeting. Which of the following information should the nurse include about adenocarcinoma?

"Pancreatic cancer doesn't usually present as an adenocarcinoma."

"Colorectal adenocarcinomas tend to have high treatment response rates."

"Many brain tumors are adenocarcinomas."

"Most prostate cancers are slow-growing adenocarcinomas."

Answer and Explanation

The Correct Answer is D

A. "Pancreatic cancer doesn't usually present as an adenocarcinoma.": Pancreatic cancer most commonly arises from the exocrine glands and is typically classified as an adenocarcinoma. It is the most frequent histological type found in pancreatic malignancies.
B. "Colorectal adenocarcinomas tend to have high treatment response rates.": Treatment response in colorectal adenocarcinoma depends heavily on the stage at diagnosis. While early-stage tumors may respond well, advanced stages often have lower responsiveness and poorer outcomes.
C. "Many brain tumors are adenocarcinomas.": Primary brain tumors are typically glial in origin, such as astrocytomas or glioblastomas. Adenocarcinomas rarely originate in the brain and are more often found in epithelial tissues like the lungs, colon, or prostate.
D. "Most prostate cancers are slow-growing adenocarcinomas.": Prostate cancer most often originates from glandular tissue and is classified as an adenocarcinoma. These tumors commonly progress slowly, especially in older adults, and may be monitored for years without requiring aggressive treatment.

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Correct Answer is A

Explanation

A. Lower oxygen saturations of 93% to 94%: Older adults with pneumothorax may present with lower oxygen saturations as the collapsed lung leads to impaired gas exchange. Oxygen saturation levels of 93% to 94% may indicate mild hypoxemia in these clients.
B. Lower energy expenditure: Pneumothorax in older adults is more likely to result in respiratory symptoms like hypoxemia, rather than directly affecting energy expenditure.
C. Higher oxygen saturations of 98% to 99%: This is unlikely in the presence of pneumothorax, which typically causes hypoxemia due to impaired lung function. High oxygen saturation levels would not be expected.
D. Increased lung capacity: Pneumothorax causes lung collapse, which results in decreased lung capacity and is not associated with increased lung function.

A. Decreased cardiac output B. Dilated ventricles C. Respiratory alkalosis D. Increased venous return

Correct Answer is A

Explanation

A. Decreased cardiac output: In tension pneumothorax, intrathoracic pressure builds up and shifts mediastinal structures, including the trachea and heart. This pressure compresses the vena cava and heart, reducing venous return and ultimately decreasing cardiac output, which can lead to shock if untreated.
B. Dilated ventricles: Ventricular dilation is not a typical response to tension pneumothorax. In fact, the compression caused by increased pressure limits ventricular filling rather than causing dilation.
C. Respiratory alkalosis: Although initial hyperventilation may lead to respiratory alkalosis, it is not a direct or consistent result of tracheal deviation. The condition can progress to respiratory acidosis as ventilation is impaired.
D. Increased venous return: Venous return is actually decreased in tension pneumothorax due to compression of the great veins. This contributes to hypotension and impaired cardiac output, not an increase in venous return.

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A nurse is teaching an in-service about cancer at a staff meeting. Which of the following information should the nurse include about adenocarcinoma?

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Naxlex Comprehensive Predictor Exams

Which of the following could the nurse expect to observe in an older adult client who has a pneumothorax?

Correct Answer is A

Explanation

A nurse is assessing a client who has tension pneumothorax. Which of the following findings should the nurse expect following tracheal deviation?

Correct Answer is A

Explanation

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