The physician has ordered Dopamine for a patient in the ICU who has suffered a spinal cord injury. The nurse determines that the drug is having the desired effect when the assessment findings are:

Temperature of 96.8°F

Blood pressure 110/68

Respiratory rate of 20 breaths/min

Heart rate of 70 beats/min

Answer and Explanation

The Correct Answer is B

Choice A reason:

A temperature of 96.8°F is within the normal range for a human body (97.8°F to 99.1°F). However, it does not necessarily indicate the desired effect of Dopamine. Dopamine is primarily used to improve blood flow and cardiac output, particularly in critically ill patients. Therefore, temperature alone is not a reliable indicator of its effectiveness.

Choice B reason:

Blood pressure of 110/68 mmHg suggests that the Dopamine is effectively maintaining the patient's hemodynamic stability. Dopamine is often used to support blood pressure in patients with hypotension, particularly after spinal cord injuries. Maintaining an adequate blood pressure ensures that vital organs receive sufficient blood flow, which is a key therapeutic goal of Dopamine administration.

Choice C reason:

A respiratory rate of 20 breaths/min is considered normal for an adult (12-20 breaths/min). While normal respiratory rate is a positive sign, it is not a direct measure of Dopamine's effectiveness. Dopamine's primary action is on the cardiovascular system, so a normal respiratory rate alone does not necessarily indicate that the drug is having the desired effect.

Choice D reason:

A heart rate of 70 beats/min is within the normal range for adults (60-100 beats/min). Similar to the respiratory rate, while a normal heart rate is beneficial, it is not a direct indicator of Dopamine's effectiveness. Dopamine's role in improving cardiac output and blood pressure is more critical in assessing its desired effects.

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Correct Answer is C

Explanation

Choice A reason:

Lower levels of arterial carbon dioxide do not directly facilitate brain oxygenation. While maintaining appropriate CO2 levels is important for overall respiratory function, the primary reason for targeting a specific PaCO2 range in traumatic brain injury is related to intracranial pressure control.

Choice B reason:

Although carbon dioxide is indeed a waste product that must be eliminated from the body, this statement does not explain why specific PaCO2 levels are targeted in the context of traumatic brain injury. The primary concern is the impact of CO2 on intracranial pressure.

Choice C reason:

Carbon dioxide is a potent vasodilator, and elevated levels can lead to increased intracranial pressure (ICP). By maintaining PaCO2 within a range of 35-38 mmHg, the healthcare provider aims to prevent hypercapnia and the resulting vasodilation, which can exacerbate intracranial hypertension in patients with traumatic brain injury.

Choice D reason:

Lower levels of arterial carbon dioxide are not specifically essential for gas exchange. The primary concern with PaCO2 management in traumatic brain injury is controlling intracranial pressure, rather than optimizing gas exchange alone.

A. Obtain an order for a chest x-ray. B. Increase the PEEP. C. Perform endotracheal suctioning. D. Reposition the patient.

Correct Answer is C

Explanation

Choice A reason:

While obtaining a chest x-ray can help assess the patient's condition, it is not the immediate action needed in this situation. The patient's drop in SaO2 and agitation indicate an acute issue that needs to be addressed promptly.

Choice B reason:

Increasing the PEEP might help improve oxygenation, but it is not the first action to take. The presence of coarse crackles suggests the need to clear secretions first before adjusting ventilator settings.

Choice C reason:

Performing endotracheal suctioning is the appropriate immediate action. Coarse crackles indicate the presence of secretions in the airway, which can impair ventilation and oxygenation. Suctioning helps clear the airway and improve the patient's SaO2 levels.

Choice D reason:

Repositioning the patient can help with ventilation and comfort but is not the priority action when there are indications of airway obstruction. Clearing the airway through suctioning takes precedence in this scenario.

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The physician has ordered Dopamine for a patient in the ICU who has suffered a spinal cord injury. The nurse determines that the drug is having the desired effect when the assessment findings are:

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Why does the healthcare provider prescribe a ventilator setting to maintain partial pressure of arterial carbon dioxide (PaCO2) between 35 and 38 mmHg for a patient with traumatic brain injury?

Correct Answer is C

Explanation

A patient with Acute Respiratory Distress Syndrome is mechanically ventilated. Coarse crackles are heard over upper airways, the SaO2 has dropped to 85%, and the patient is agitated. Which action should the nurse take?

Correct Answer is C

Explanation

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