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 B

Explanation

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.

A. Provide small doses of opioid analgesia B. Maintain pCO2 of 35-45 C. Administer an anti-anxiety agent D. Monitor blood pressure every four hours

Correct Answer is B

Explanation

Choice A reason:

Providing small doses of opioid analgesia is important for pain management, but it is not the highest priority in a patient with a closed head injury on mechanical ventilation. Pain control should be balanced with the need to monitor neurological status.

Choice B reason:

Maintaining pCO2 of 35-45 is critical for patients with a closed head injury on mechanical ventilation. Proper pCO2 levels help manage intracranial pressure (ICP) and prevent secondary brain injury. Hyperventilation to lower pCO2 can reduce ICP but must be carefully controlled to avoid cerebral ischemia.

Choice C reason:

Administering an anti-anxiety agent can help manage agitation and anxiety, but it is not the highest priority. Sedation must be used cautiously in head injury patients to avoid masking changes in neurological status.

Choice D reason:

Monitoring blood pressure every four hours is necessary for overall patient care, but continuous monitoring and immediate interventions are more critical in managing intracranial pressure and preventing secondary brain injury.

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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

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:

Correct Answer is B

Explanation

A nurse is caring for a patient with a closed head injury on mechanical ventilation. Which of the following actions is highest priority?

Correct Answer is B

Explanation

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

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