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Renin plays a role in blood pressure regulation by
- A. activating the renin-angiotensin-aldosterone cascade.
- B. suppressing angiotensin production.
- C. decreasing sodium reabsorption.
- D. inhibiting aldosterone release.
Correct Answer: A
Rationale: The correct answer is A because renin activates the renin-angiotensin-aldosterone cascade, which ultimately leads to vasoconstriction, increased blood pressure, and aldosterone release to increase sodium and water reabsorption. Renin does not suppress angiotensin production (B), decrease sodium reabsorption (C), or inhibit aldosterone release (D), as these actions would counteract its role in blood pressure regulation.
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The nurse is caring for a patient in the critical care unit whaobi,r ba.cfotemr/ tebset ing declared brain dead, is being managed by the OPO transplant coordinator. Thir ty minutes into the shift, assessment by the nurse includes a blood pressure 75/50 mm Hg, hear t rate 85 beats/min, and respiratory rate 12 breaths/min via assist/control ventilation. The oxygen saturation (SpO ) is 99% and 2 core temperature 93.8° F. Which primary care provider ord er should the nurse implement first?
- A. Apply forced air warming device to keep temperature > 96.8° F
- B. Obtain basic metabolic panel every 4 hours until surgery
- C. Begin phenylephrine (Neo-Synephrine) for systolic BP < 90 mm Hg
- D. Draw arterial blood gas every 4 hours until surgery
Correct Answer: C
Rationale: The correct answer is C: Begin phenylephrine (Neo-Synephrine) for systolic BP < 90 mm Hg. The nurse should implement this order first because the patient's low blood pressure (75/50 mm Hg) indicates hypotension, which can lead to inadequate perfusion to vital organs. Phenylephrine is a vasoconstrictor that can help increase the patient's blood pressure and improve perfusion. It is crucial to address hypotension promptly to prevent further complications.
Choice A is incorrect because maintaining the patient's temperature above 96.8°F is not the most urgent concern in this scenario. Choice B is incorrect as obtaining a basic metabolic panel every 4 hours is not the immediate priority when the patient is experiencing hypotension. Choice D is incorrect as drawing arterial blood gas every 4 hours is not the most urgent intervention needed to address the patient's low blood pressure.
A 20-year-old patient arrives in the emergency department (ED) several hours after taking 25 to 30 acetaminophen (Tylenol) tablets. Which action will the nurse plan to take?
- A. Give N-acetylcysteine (Mucomyst).
- B. Discuss the use of chelation therapy.
- C. Start oxygen using a non-rebreather mask.
- D. Have the patient drink large amounts of water.
Correct Answer: A
Rationale: The correct answer is A: Give N-acetylcysteine (Mucomyst). N-acetylcysteine is the antidote for acetaminophen overdose. It helps replenish glutathione, which is depleted by acetaminophen metabolism. This prevents liver damage. Choice B, chelation therapy, is not indicated for acetaminophen overdose. Choice C, oxygen therapy, is not directly related to acetaminophen overdose treatment. Choice D, drinking water, will not address the overdose and may not be safe in high doses. Therefore, the best course of action is to administer N-acetylcysteine to prevent liver damage in acetaminophen overdose.
A male client is angry and is leaving the hospital against medical advice (AMA). The client demands to take his chart with him and states the chart is 'his' and he doesn’t want any more contact with the hospital. How should the nurse respond?
- A. This hospital does not need to keep it if you are leaving and not returning here.
- B. Because you are leaving against medical advice, you may not have your chart.
- C. The information in your chart is confidential and cannot leave this facility legally.
- D. The chart is the property of the hospital but I will see that a copy is made for you.
Correct Answer: D
Rationale: The correct answer is D because the client's medical chart is the property of the hospital, but the client has the right to a copy of the information. By offering to make a copy of the chart for the client, the nurse respects the client's autonomy while also ensuring that the hospital maintains the original medical record. This response balances the client's rights with legal and ethical considerations.
Choice A is incorrect because the hospital is legally obligated to maintain the client's medical record even if the client leaves against medical advice. Choice B is incorrect as it denies the client access to their medical information, which goes against the principle of patient autonomy. Choice C is also incorrect as it does not address the client's request for a copy of their chart.
A 28-year-old patient who has deep human bite wounds on the left hand is being treated in the urgent care center. Which action will the nurse plan to take?
- A. Prepare to administer rabies immune globulin (BayRab).
- B. Assist the health care provider with suturing the bite wounds.
- C. Teach the patient the reason for the use of prophylactic antibiotics.
- D. Keep the wounds dry until the health care provider can assess them.
Correct Answer: C
Rationale: The correct answer is C: Teach the patient the reason for the use of prophylactic antibiotics. This is the most important action because human bites can introduce harmful bacteria into the wound, leading to infection. Prophylactic antibiotics help prevent infection in deep human bite wounds.
Choice A is incorrect because rabies immune globulin is not indicated for human bite wounds. Choice B is incorrect because suturing human bite wounds can trap bacteria and increase the risk of infection. Choice D is incorrect because keeping the wounds dry is not sufficient; proper wound cleaning and antibiotic treatment are essential in this case.
The nurse is managing a donor patient six hours prior to th e scheduled harvesting of the patient’s organs. Which assessment finding requires imme diate action by the nurse?
- A. Morning serum blood glucose of 128 mg/dL
- B. pH 7.30; PaCO 38 mm Hg; HCO 16 mEq/L 2 3
- C. Pulmonary artery temperature of 97.8° F
- D. Central venous pressure of 8 mm Hg
Correct Answer: B
Rationale: The correct answer is B. The patient's pH of 7.30 indicates acidosis, PaCO2 of 38 mm Hg is low, and HCO3 of 16 mEq/L is also low, suggesting metabolic acidosis. This finding requires immediate action as untreated acidosis can lead to serious complications.
Choice A (morning serum blood glucose of 128 mg/dL) is within normal range and does not require immediate action.
Choice C (pulmonary artery temperature of 97.8°F) is a normal temperature and does not require immediate action.
Choice D (central venous pressure of 8 mm Hg) is within normal range and does not require immediate action.