A resident should place a cane about ___________ inches in front of his stronger leg.

Correct Answer: B

Rationale: The correct answer is B (12 inches). Placing the cane 12 inches in front of the stronger leg provides optimal support and stability while walking. This positioning allows the user to shift their weight onto the cane and then step forward with the weaker leg, promoting balance and reducing the risk of falls. Placing the cane too close or too far can compromise its effectiveness. Choice A (8 inches) and Choice D (6 inches) are too close to the stronger leg, which may not provide sufficient support. Choice C (14 inches) is too far in front, potentially causing the user to overreach and lose balance.

Correct Answer: C

Rationale: The correct answer is C because perioperative nursing encompasses activities before, during, and after surgery. Preoperative nursing care involves preadmission testing, assessment, and preparation for surgery. Intraoperative nursing care occurs during the surgical procedure. Postoperative nursing care takes place in the recovery room and continues until the patient is discharged. Choices A, B, and D are incorrect because they do not fully capture the comprehensive scope of perioperative nursing, which involves caring for the patient throughout the entire surgical process, not limited to a specific phase.

Correct Answer: B

Rationale: The correct answer is B: Managing patient care activities in the OR suite. The primary role of the circulating nurse is to coordinate and manage patient care activities during surgery. This includes ensuring patient safety, maintaining aseptic technique, documenting the procedure, and communicating with the surgical team. Suturing the incision (A) is the responsibility of the surgeon, not the circulating nurse. Assisting with applying sterile drapes (C) is part of the scrub nurse's role. Handing sterile instruments to the surgeon (D) is the responsibility of the scrub nurse as well. Therefore, managing patient care activities (B) is the most appropriate role for the circulating nurse in the OR suite.

Correct Answer: A

Rationale: The correct answer is A: Glucagon intramuscularly. Glucagon is the preferred treatment for severe hypoglycemia in patients with altered mental status and no IV access. When administered intramuscularly, it quickly raises blood sugar levels by stimulating glycogen breakdown in the liver. Oral glucose (choice B) is not suitable for patients who cannot follow commands. IV dextrose (choice C) requires IV access, which is not available in this scenario. Glucagon should not be given subcutaneously (choice D) as it may have delayed absorption and be less effective in this critical situation.

Correct Answer: B

Rationale: The correct answer is B: Beta-blockers. Beta-blockers decrease the workload of the heart by blocking the sympathetic stimulation of beta-adrenergic receptors in the heart. This action results in a decrease in heart rate and the force of myocardial contraction. By blocking these receptors, beta-blockers reduce the impact of adrenaline and other stress hormones on the heart, leading to a decrease in the heart's workload. A: Alpha-adrenergic agents primarily work on alpha-adrenergic receptors and do not have the same effect on decreasing the workload of the heart. C: Calcium-channel blockers work by blocking calcium channels in the heart and blood vessels, leading to vasodilation and decreased contractility of the heart. While they can reduce the heart's workload, they do not primarily target sympathetic stimulation of receptors working on the SA node and myocardial cells. D: Sodium-channel blockers primarily affect the conduction of electrical impulses in the heart and are used for different purposes, such as