Critical Care Nursing NCLEX Questions

Correct Answer: A

Rationale: The correct answer is A: Bilateral infiltrates on chest x-ray study. ARDS diagnosis requires bilateral infiltrates on chest x-ray, indicative of non-cardiogenic pulmonary edema. Choice B, decreased cardiac output, is not a diagnostic criterion for ARDS. Choice C, PaO2/FiO2 ratio of less than 200, is a key diagnostic criteria for ARDS, indicating severe hypoxemia. Choice D, PAOP of more than 18 mm Hg, is used to differentiate between cardiogenic and non-cardiogenic causes of pulmonary edema, but it is not a direct diagnostic criterion for ARDS.

Correct Answer: D

Rationale: The Venturi mask is the best choice for delivering 65% oxygen because it allows precise oxygen concentration delivery through adjustable venturi valves. This device ensures consistent oxygen levels even during variations in patient breathing patterns. Face mask with non-rebreathing reservoir (A) delivers higher oxygen concentrations, low-flow nasal cannula (B) is not suitable for precise oxygen delivery, and simple face mask (C) may not provide the desired oxygen concentration.

Correct Answer: C

Rationale: Step-by-step rationale for choice C: 1. Advance directives should be made by the patient to reflect their wishes. 2. Developing it before illness ensures clarity and avoids confusion. 3. Patients may not be able to make informed decisions in critical conditions. 4. Family or surrogates may not accurately represent the patient's wishes. Summary: A - Family in critical condition may not know the patient's wishes. B - Hospital admission process may be too late for clear decision-making. D - Healthcare surrogate may not fully understand the patient's preferences.

Correct Answer: A

Rationale: The correct answer is A: Unmarried life partners of same sex. When providing palliative care, it's crucial to recognize and respect diverse family structures. Unmarried life partners of the same sex may form a significant familial bond, requiring support and involvement in care decisions. This choice aligns with the principles of inclusivity and non-discrimination in palliative care. Incorrect choices: B: Unmarried life partners of the opposite sex - This choice is incorrect as it limits the definition of family to only opposite-sex partners, excluding same-sex couples. C: Roommates - While roommates may provide support, they do not necessarily have the same level of emotional and decision-making involvement as family members or life partners. D: Close friends - While close friends can be important sources of support, they do not necessarily have the same legal or emotional ties as a life partner.

Correct Answer: A

Rationale: The correct answer is A: high Fowler's position. This position promotes optimal lung expansion by allowing the chest to expand fully, improving oxygenation. It also helps reduce the work of breathing. Side lying with the head of the bed elevated (B) may not provide the same level of lung expansion. Sitting in a chair (C) may not be suitable for a patient in acute respiratory failure as it may not provide adequate support for breathing. Supine with the bed flat (D) can worsen respiratory distress by limiting lung expansion.