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:

Palpating the bladder for distention is the first action the nurse should take. The patient's symptoms suggest autonomic dysreflexia, a condition that can be triggered by bladder distention. Relieving the distention can help resolve the hypertensive crisis.

Choice B reason:

Initiating oxygen via a nasal cannula may be necessary if the patient is experiencing respiratory distress, but it is not the primary intervention for autonomic dysreflexia. The focus should be on identifying and resolving the triggering cause.

Choice C reason:

Placing the patient in a supine position is contraindicated in autonomic dysreflexia as it can worsen the condition by further increasing blood pressure. The patient should be positioned upright if tolerated.

Choice D reason:

Administering a prescribed beta-blocker may help lower blood pressure, but it is not the first action. The underlying cause of autonomic dysreflexia must be addressed to prevent recurrence.

A. A 72-year-old client with a brain tumor, GCS of 5 and decerebrate posturing. B. A 24-year-old client after a motor vehicle accident with a Glasgow Coma Scale (GCS) of 3 and no activity on electroencephalogram. C. A 68-year-old male admitted with a massive stroke and GCS of 6. D. A 50-year-old female client after a motor vehicle accident and surgical evacuation of an epidural hematoma, Glasgow Coma Scale 12.

Correct Answer is B

Explanation

Choice A reason:

A 72-year-old client with a brain tumor, GCS of 5, and decerebrate posturing may not be an ideal candidate for organ donation due to age and underlying cancer, which can affect organ viability.

Choice B reason:

A 24-year-old client after a motor vehicle accident with a GCS of 3 and no activity on electroencephalogram is a prime candidate for organ donation. The lack of brain activity indicates brain death, and the patient's young age and otherwise healthy organs make them suitable for transplantation.

Choice C reason:

A 68-year-old male with a massive stroke and GCS of 6 has significant neurological impairment but is not necessarily brain dead. Further evaluation would be required, but this patient may not meet the criteria for brain death necessary for organ donation.

Choice D reason:

A 50-year-old female with a GCS of 12 after surgical evacuation of an epidural hematoma is not an ideal candidate for organ donation at this time as they have a higher level of consciousness and potential for recovery.

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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?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Explanation

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Correct Answer is B

Explanation

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