Correct Answer: D

Rationale: Lactated Ringer's solution is the most suitable IV solution for a patient with hypovolemia. It is a balanced crystalloid solution containing electrolytes such as sodium, chloride, potassium, calcium, and lactate, which closely resemble the body's natural fluids. This solution helps to restore intravascular volume and electrolyte balance in hypovolemic patients. Choice A, 3% sodium chloride, is a hypertonic solution used for specific situations like severe hyponatremia or cerebral edema, not typically for hypovolemia. Choice B, 10% dextrose in water, is a hypertonic solution primarily used for providing calories and free water, not for volume expansion. Choice C, 0.45% sodium chloride, is a hypotonic solution used for conditions like hypernatremia or as maintenance fluid, not for hypovolemia.

Correct Answer: C

Rationale: The progressive stage of shock is accurately described as the stage where histamine is released, leading to fluid and proteins leaking into surrounding tissues and the blood thickening. In this stage, the body's compensatory mechanisms are overwhelmed, resulting in a cascade of events that worsen the shock state. Choice A is incorrect as hyperventilation and a rise in blood pH are more characteristic of the compensatory stage. Choice B is incorrect as hypoxia and a rise in lactic acid are more typical of the progressive stage. Choice D is incorrect as the described electrolyte imbalances and metabolic acidosis are more aligned with the refractory stage of shock.

Correct Answer: B

Rationale: Engaging in conversations about healthcare issues with a wide audience, including legislators, is a powerful way for a nurse to exert leadership and support the nursing profession. This action helps raise awareness, advocate for nursing-related matters, and contribute to positive changes in healthcare policies. Choice A, joining a local professional organization, is beneficial but may not have the same broad impact as engaging in public discourse. Choice C, registering to vote, is important for civic engagement but does not directly relate to exerting leadership in supporting the nursing profession. Choice D, learning about the healthcare system, is valuable for personal development but does not directly address exerting leadership in supporting the nursing profession.

Correct Answer: B

Rationale: The expected date of delivery is calculated by adding 9 months and 7 days to the last menstrual period. For April 20th, the expected date is January 27th. Therefore, the correct answer is B. Choice A, January 20th, is incorrect as it does not account for the additional 7 days. Choice C, January 29th, and Choice D, January 31st, are also incorrect as they do not consider the standard calculation method for estimating the due date.

Correct Answer: C

Rationale: A nurse who floated from a medical-surgical unit would be appropriate to care for a client who is 1 day postoperative following a Cesarean section and has a PCA pump. This client requires monitoring of the postoperative incision site, pain management through the PCA pump, and assessment for any signs of complications related to the surgery. Assigning this client to an RN with experience in postoperative care aligns with providing specialized and appropriate care. Choices A, B, and D involve conditions or procedures specific to obstetrics that would be better managed by a nurse with obstetrical experience, making them incorrect choices for the floated RN.