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. Respiratory acidosis: Clients with COPD have chronic difficulty exhaling carbon dioxide due to airflow obstruction, leading to CO₂ retention. This accumulation of carbon dioxide causes a drop in blood pH, resulting in respiratory acidosis, a common acid-base imbalance in COPD patients.
B. Metabolic acidosis: Metabolic acidosis results from increased acid production or loss of bicarbonate through the kidneys or gastrointestinal tract, such as in diabetic ketoacidosis or severe diarrhea. It is not typically associated with impaired ventilation or chronic lung disease like COPD.
C. Respiratory alkalosis: Respiratory alkalosis occurs when there is excessive loss of carbon dioxide due to hyperventilation. Clients with COPD generally hypoventilate rather than hyperventilate, making this acid-base imbalance unlikely in this case.
D. Metabolic alkalosis: Metabolic alkalosis is typically caused by loss of hydrogen ions through vomiting or diuretic use, or excessive bicarbonate intake. It is unrelated to the impaired gas exchange and CO₂ retention seen in clients with COPD.

A. Respiratory alkalosis, fully compensated B. Metabolic acidosis, partially compensated C. Respiratory acidosis, fully compensated D. Metabolic acidosis, fully compensated

Correct Answer is B

Explanation

A. Respiratory alkalosis, fully compensated: pH is low normal (7.35), and the bicarbonate (HCO3-) level is low (21 mEq/L), indicating metabolic acidosis, not respiratory alkalosis. Respiratory alkalosis would present with a high pH and low PaCO2.
B. Metabolic acidosis, partially compensated: The pH is slightly acidic (7.35), and the bicarbonate level is low (21 mEq/L), indicating metabolic acidosis. The PaCO2 level is normal, suggesting partial compensation by the respiratory system, but the body has not fully compensated for the acidosis yet.
C. Respiratory acidosis, fully compensated: Respiratory acidosis would present with an elevated PaCO2 and a low pH, which is not the case here. The PaCO2 is normal at 40 mmHg, so this option is incorrect.
D. Metabolic acidosis, fully compensated: While the client does have metabolic acidosis, the respiratory system has not fully compensated for the acidosis, as evidenced by the normal PaCO2 level. Therefore, the compensation is partial, not full.

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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

A nurse is caring for a client who has chronic obstructive pulmonary disease (COPD) and is short of breath. When reviewing the client's arterial blood gases (ABGS), which of the following conditions should the nurse anticipate the client to be experiencing?

Correct Answer is A

Explanation

A patient's arterial blood gas (ABG) results show a pH of 7.35, PaCO2 of 40 mmHg, and HCO3- of 21 mEq/L. What type of acid-base imbalance is present and how would you classify it?

Correct Answer is B

Explanation

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