When planning care for a patient on a mechanical ventilator, the nurse understands that the application of positive end-expiratory pressure (PEEP) to the ventilator settings has which therapeutic effect?

Need for increased FiO2 administration.

Increased inflation of the lungs.

Prevention of alveolar collapse during expiration.

Prevention of barotrauma to the lung tissue.

Answer and Explanation

The Correct Answer is C

Choice A reason:

The application of PEEP does not inherently increase the need for FiO2 (fraction of inspired oxygen) administration. PEEP helps improve oxygenation, potentially reducing the need for higher FiO2 levels.

Choice B reason:

While PEEP can contribute to better lung inflation by keeping the alveoli open, this is a secondary effect. The primary goal of PEEP is to prevent alveolar collapse at the end of expiration.

Choice C reason:

PEEP prevents alveolar collapse during expiration, which is its primary therapeutic effect. By maintaining a certain level of pressure in the lungs at the end of expiration, PEEP ensures that the alveoli remain open, improving gas exchange and oxygenation.

Choice D reason:

Although PEEP can help reduce the risk of atelectasis (collapse of part or all of a lung), it does not directly prevent barotrauma. Barotrauma is related to high airway pressures, and careful monitoring of ventilator settings is necessary to avoid it.

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Correct Answer is D

Explanation

Choice A reason:

Encouraging the patient to deep breathe and use an incentive spirometer is important for lung expansion and preventing atelectasis. However, it is not the most immediate action following extubation.

Choice B reason:

Offering the patient medication for sedation is not appropriate immediately following extubation, as it could depress respiratory function and interfere with the patient's ability to clear secretions and maintain an open airway.

Choice C reason:

Assessing the patient's ability to speak is important to ensure that the vocal cords were not damaged during the intubation process. However, this is secondary to ensuring that the patient is breathing effectively and maintaining adequate oxygenation.

Choice D reason:

Assessing vital signs and effort of breathing is the most immediate and important action following extubation. Monitoring the patient’s respiratory status ensures that they are maintaining a patent airway, breathing effectively, and not experiencing respiratory distress or failure.

A. Serum blood glucose of 128 mg/dL B. Blood pressure of 83/51 mmHg C. Hemoglobin level of 13 g/dL D. Core body temperature of 97.8 degrees F

Correct Answer is B

Explanation

Choice A reason:

A serum blood glucose level of 128 mg/dL is slightly elevated but not immediately concerning in the context of organ donation. Blood glucose levels can be managed with insulin if necessary, and this value does not indicate an acute issue requiring immediate intervention.

Choice B reason:

A blood pressure of 83/51 mmHg is critically low and requires immediate action. Low blood pressure can compromise organ perfusion and oxygen delivery, potentially leading to organ damage. In the context of organ donation, maintaining adequate perfusion pressure is essential to ensure the viability of the organs for transplantation.

Choice C reason:

A hemoglobin level of 13 g/dL is within the normal range and does not require immediate intervention. Hemoglobin levels are important for oxygen-carrying capacity but are not the priority concern six hours before organ harvesting if the value is within normal limits.

Choice D reason:

A core body temperature of 97.8 degrees F is slightly below normal but not immediately alarming. Mild hypothermia can be addressed with warming measures, and this temperature does not indicate a critical issue that requires urgent action.

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When planning care for a patient on a mechanical ventilator, the nurse understands that the application of positive end-expiratory pressure (PEEP) to the ventilator settings has which therapeutic effect?

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Naxlex Comprehensive Predictor Exams

Which would be the most important action immediately following extubation of a patient?

Correct Answer is D

Explanation

The nurse is managing a donor patient six hours prior to the scheduled harvesting of the patient's organs. Which assessment finding requires immediate action by the nurse?

Correct Answer is B

Explanation

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