Correct Answer: C

Rationale: The correct answer is C: Dobutamine infusion. In this scenario, the patient is experiencing hypovolemic shock due to significant blood loss, resulting in low blood pressure, tachycardia, and low cardiac output. Dobutamine is a positive inotropic agent that increases cardiac contractility and output, helping to improve tissue perfusion. Blood transfusion (A) is a common intervention for hypovolemic shock, but in this case, the patient's hematocrit is low, indicating dilutional anemia rather than acute blood loss, so addressing the cardiac output is more urgent. Furosemide (B) is a diuretic that would exacerbate the hypovolemia and worsen the patient's condition. Dopamine (D) is a vasopressor that primarily increases blood pressure, but in this case, the patient's low cardiac output is the main concern, making dobutamine a more appropriate choice.

Correct Answer: C

Rationale: Rationale for Correct Answer (C): When the low-pressure alarm sounds for a patient with an arterial line, the nurse should assess for cardiac dysrhythmias first. This is because a sudden drop in pressure could indicate a serious issue affecting the heart's ability to pump effectively. Identifying and addressing any cardiac dysrhythmias promptly is crucial for patient safety. Summary of Incorrect Choices: A: Fast flush of the arterial line - This would not address the underlying cause of the low-pressure alarm and may not be necessary. B: Check the left hand for pallor - While assessing perfusion is important, it is not the priority when the alarm indicates a potential cardiac issue. D: Rezero the monitoring equipment - While important for accuracy, it is not the priority when the alarm indicates a potential cardiac concern.

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.

Correct Answer: C

Rationale: The correct answer is C: Measure the patient’s urinary output every hour. This is crucial because monitoring urinary output is essential in assessing the patient’s renal function and the effectiveness of the intra-aortic balloon pump in improving cardiac output. Hourly measurement helps in early detection of any changes that may indicate complications. A: Positioning the patient supine at all times is not necessary and can lead to complications. B: Avoiding the use of anticoagulant medications is not appropriate as they are often necessary to prevent clot formation around the balloon pump. D: Providing a massive range of motion for all extremities is not recommended for a patient with an intra-aortic balloon pump as it can dislodge the device or cause harm.

Correct Answer: B

Rationale: The correct answer is B: Assess neurological status every 30 minutes. This intervention is crucial for patients receiving neuromuscular blocking agents to monitor for any adverse effects such as respiratory depression or paralysis. Regular assessments help ensure early detection of complications and prompt intervention. A: Administering sedatives in conjunction with neuromuscular blocking agents can potentiate respiratory depression and lead to respiratory compromise. C: Avoiding interaction with the patient is not appropriate as communication and patient interaction are important aspects of nursing care. D: Restraint should be avoided as it can increase the risk of complications such as pressure ulcers, anxiety, and decreased respiratory function. Overall, regular neurological assessments are essential for ensuring patient safety and prompt intervention in case of any complications.