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 A

Explanation

Choice A reason:

A heart rate of 45 beats/min (bradycardia) is concerning because it indicates a significant impact on the autonomic nervous system, which can occur with high thoracic spinal cord injuries. Bradycardia can lead to inadequate cardiac output and may require immediate intervention to prevent further cardiovascular compromise.

Choice B reason:

An SpO2 of 91% is slightly below normal but not immediately life-threatening. While monitoring and addressing oxygen saturation is important, it is not as critical as the hemodynamic instability indicated by bradycardia in this context.

Choice C reason:

A blood pressure of 98/62 mmHg is on the lower end of the normal range but not immediately alarming. While hypotension is a concern in spinal cord injury patients, the more pressing issue in this scenario is the bradycardia, which can have more immediate and severe consequences.

Choice D reason:

Loss of motor and sensory function in the extremities is a significant finding in spinal cord injuries and indicates the level and severity of the injury. However, it is not immediately life-threatening and does not require as urgent intervention as bradycardia in this acute setting.

A. Suctioning the patient on a regular schedule. B. Adherence to proper hand hygiene. C. Administering antiulcer medication. D. Providing oral care per protocol. E. Elevating the head of the bed.

Correct Answer is ["B","D","E"]

Explanation

Choice A reason:

Suctioning the patient on a regular schedule is not recommended as it can increase the risk of infection and trauma to the airway. Suctioning should be done as needed based on clinical assessment.

Choice B reason:

Adherence to proper hand hygiene is a fundamental practice in preventing infections, including ventilator-associated pneumonia. Hand hygiene helps prevent the transmission of pathogens.

Choice C reason:

Administering antiulcer medication is important for preventing stress ulcers but is not directly related to preventing ventilator-associated pneumonia.

Choice D reason:

Providing oral care per protocol is essential in reducing the risk of ventilator-associated pneumonia. Oral care helps decrease the bacterial load in the oropharynx and prevent aspiration of contaminated secretions.

Choice E reason:

Elevating the head of the bed to 30-45 degrees helps prevent aspiration of gastric contents and is a key practice in preventing ventilator-associated pneumonia.

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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

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Correct Answer is A

Explanation

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Correct Answer is ["B","D","E"]

Explanation

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