Correct Answer: C

Rationale: The correct answer is C. In Cushing's syndrome, there is excess cortisol production leading to sodium retention, potassium loss, and increased protein breakdown. Low sodium and potassium levels along with high BUN are commonly seen in patients with Cushing's syndrome. A: Low potassium and high glucose are possible findings, but high white blood cell count is not typically associated with Cushing's syndrome. B: High sodium and polycythemia are not typical findings in Cushing's syndrome, and low BUN is not consistent with the protein breakdown seen in this condition. D: High sodium and high chloride levels can be seen, but high RBCs are not typically associated with Cushing's syndrome.

Correct Answer: C

Rationale: Rationale for Correct Answer (C): 1. The patient's symptoms of decreased capacity for intake and nausea after eating suggest gastroparesis, a common complication post-ulcer surgery. 2. Given the history of complicated peptic ulcer disease and prior surgery, medication may be ineffective, necessitating potential reoperation. 3. The AGACNP advises that another surgery may be needed, indicating that medication alone may not suffice to address the issue. Summary of Incorrect Choices: A: Endoscopy is not necessary at this point as the symptoms are likely indicative of a functional issue rather than a structural problem. B: While gastroparesis can occur post-ulcer surgery, the patient's symptoms are more suggestive of gastroparesis rather than chronic gastroparesis as a known complication. D: The frequency of occurrence of symptoms after ulcer surgery is not relevant to the current management of the patient's symptoms.

Correct Answer: B

Rationale: The correct answer is B: Tachycardia. In the initial stage of shock, the body tries to compensate for decreased perfusion by increasing heart rate to maintain blood flow to vital organs. Cyanosis (A) is a late sign of shock due to inadequate oxygenation. Sweat beads (C) are a non-specific response and not a defining feature of shock. Hypotension (D) typically occurs in the later stages of shock as the body's compensatory mechanisms start to fail. Tachycardia is the earliest and most consistent sign of shock, reflecting the body's attempt to maintain cardiac output.

Correct Answer: C

Rationale: The correct answer is C because living wills are typically not honored for terminally ill patients with impaired cognition. Firstly, living wills require the patient to be of sound mind to make decisions. Secondly, in the case of a cognitively impaired patient, their ability to express their wishes and understand the implications may be compromised. Therefore, healthcare providers may not be able to honor the living will accurately. Choices A, B, and D are incorrect because A) competency can be determined by healthcare professionals, B) impaired cognition can lead to incompetence, and D) informed consent requires the patient to understand the decision-making process.

Correct Answer: C

Rationale: Rationale for Correct Answer (C): A trial of scar is indicated when a woman has had no more than two previous caesarean sections. This is because the risk of uterine rupture increases with each subsequent caesarean section due to scar tissue weakening. Limiting the number of previous scars reduces this risk. Therefore, option C is correct. Summary of Incorrect Choices: A: Estimated fetal weight is not a determining factor for a trial of scar. B: Availability of a level one hospital nearby is important for emergency situations but not a criteria for trial of scar. D: Adequate pelvis with true conjugate 10.5cm is important for vaginal delivery but not a specific requirement for a trial of scar.