ATI LPN
ATI Targeted Medical Surgical Endocrine Questions
Question 1 of 5
A 43-year-old woman has had absent menstrual cycles along with increasing weakness and weight gain over the past 5 months. She notes low back pain for the past week. On physical examination, vital signs include blood pressure of 155/95 mm Hg. She has a prominent fat pad in the posterior neck and back. Facial plethora, hirsutism, and abdominal cutaneous striae are present. Laboratory findings include Na+, 139 mmol/L; K+, 4.1 mmol/L; Cl-, 96 mmol/L; CO2, 23 mmol/L; glucose, 163 mg/dL; creatinine, 1.3 mg/dL; calcium, 8.9 mg/dL; and phosphorus, 4.1 mg/dL. Her serum ACTH level is low. A radiograph of the spine shows decreased bone density with a compression fracture at T9. Which of the following radiographic findings is most likely to be present in this patient?
Correct Answer: A
Rationale: The clinical findings of Cushing syndrome with masculinization suggest an adrenal cortical carcinoma, which is more likely to have endocrine function in women. A low ACTH level helps to rule out the possibility of an ACTH-secreting pituitary adenoma in the sella turcica, or ectopic ACTH from a neoplasm such as lung carcinoma.
Question 2 of 5
Since Adonis was unable lift the dumbbell, he decided to use the exercise bike for a cardiovascular workout. During maximum exertion on the exercise bike, Adonis began to breathe heavily and felt 'the burn' in his legs. The skeletal muscles of his legs were using primarily which form of respiration at maximum exertion?
Correct Answer: D
Rationale: At max exertion, glycolysis produces lactate (burn) due to limited O2, shifting from aerobic respiration.
Question 3 of 5
Which of the above will increase cardiac output?
Correct Answer: A
Rationale: Increased venous return boosts preload, raising CO; others decrease it (vagus, beta blocker) or resist flow.
Question 4 of 5
Blood flow to a tissue will decrease if:
Correct Answer: B
Rationale: High O2 reduces vasodilation need; acidity, EDV, venous return, histamine increase flow.
Question 5 of 5
Which form of epithelial tissue may be found in the upper respiratory system (URS)?
Correct Answer: A
Rationale: Pseudostratified ciliated columnar epithelium lines the URS for mucus movement.