Correct Answer: A

Rationale: The correct choice is A: 18 gauge IV cannula for blood transfusion. Larger gauge allows for faster flow rate, crucial for transfusions to prevent clotting. 24, 22, and 28 gauge cannulas are too small for adequate blood flow, leading to potential complications like hemolysis or slowed infusion.

Correct Answer: A

Rationale: The correct answer is A: Inform the physician. This is essential because a sudden change in vital signs may indicate a critical condition that requires immediate medical attention. The physician needs to be informed promptly to assess the situation and provide appropriate interventions. Summary: - B: Changing environmental settings is not a priority when dealing with sudden changes in vital signs. - C: Altering diet intake is not an immediate response to sudden changes in vital signs. - D: Decreasing physical activity may not address the underlying cause of the sudden change in vital signs.

Correct Answer: A

Rationale: The correct answer is A: Glucocorticoids and androgens. The adrenal cortex is divided into three layers, with the outer layer responsible for producing mineralocorticoids like aldosterone, the middle layer producing glucocorticoids like cortisol, and the inner layer producing androgens. Glucocorticoids are essential for regulating metabolism and immune response, while androgens are male sex hormones. Choices B, C, and D are incorrect because mineralocorticoids, catecholamines, norepinephrine, and epinephrine are produced by different parts of the adrenal gland, not specifically by the adrenal cortex.

Correct Answer: B

Rationale: The correct answer is B: Fluid retention and weight gain. Prednisone is a corticosteroid that can cause fluid retention and weight gain as common adverse reactions. Here's the rationale: Prednisone is known to increase sodium and water retention in the body, leading to fluid retention and subsequent weight gain. This occurs due to the drug's impact on the body's electrolyte balance. Tetany and tremors (Choice A) are not common adverse reactions associated with prednisone use. Anorexia and weight loss (Choice C) are also not typical reactions, as prednisone is more likely to cause weight gain. Choice D, "None of the above," is incorrect as prednisone commonly causes fluid retention and weight gain as adverse reactions.

Correct Answer: B

Rationale: The correct answer is B because the patient's Body Mass Index (BMI) indicates obesity, putting them at higher risk for surgical complications. Obesity is associated with increased risks of infections, delayed wound healing, respiratory issues, and cardiovascular problems post-surgery. Monitoring this patient closely is crucial. Choice A is less likely to have increased surgical complications due to age and condition. Choice C, a 12-year-old, is less likely to have significant surgical complications compared to adults. Choice D, a 17-year-old with gallstones, may have risks but the BMI of the patient in choice B indicates a higher risk.