A student is caring for a patient with positive end-expiratory pressure (PEEP) at 5 cm H20. The student asks “What is the purpose of PEEP?” which of the following is an appropriate response by the nurse?

PEEP deceases the peak respiratory pressures

“PEEP increases the number of breaths the patient takes on his own.”

“PEEP augments the patient’s overall tidal volumes.”

“PEEP improves oxygenation by keeping alveoli open after exhalation.”

Answer and Explanation

The Correct Answer is D

A. PEEP decreases the peak respiratory pressures:
PEEP may increase peak respiratory pressures, especially during inspiration, but its primary purpose is to prevent alveolar collapse and improve oxygenation.

B. “PEEP increases the number of breaths the patient takes on his own.”:
PEEP does not increase the number of breaths the patient takes. It primarily affects the quality of ventilation by preventing alveolar collapse.

C. “PEEP augments the patient’s overall tidal volumes.”:
PEEP does not necessarily increase overall tidal volumes. It focuses on maintaining positive pressure at the end of expiration to prevent alveolar collapse.

D. “PEEP improves oxygenation by keeping alveoli open after exhalation.”
Positive end-expiratory pressure (PEEP) is used in mechanical ventilation to maintain positive pressure in the airways and alveoli at the end of the respiratory cycle (expiration). This helps prevent alveolar collapse and improves oxygenation by keeping the alveoli open, particularly in patients with conditions like acute respiratory distress syndrome (ARDS). PEEP is commonly used to increase functional residual capacity (FRC) and improve oxygenation.

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Free Nursing Study Resources

Correct Answer is C

Explanation

A. A client who is taking a thiazide diuretic:
Thiazide diuretics can cause loss of potassium and metabolic alkalosis, not metabolic acidosis.

B. A client who is vomiting:
Vomiting can lead to the loss of stomach acid (hydrochloric acid) and may result in metabolic alkalosis, not metabolic acidosis.

C. A client who has diarrhea.
Diarrhea can lead to the loss of bicarbonate, an important buffer in the body that helps maintain acid-base balance. The loss of bicarbonate in diarrhea can result in an excess of acid, contributing to metabolic acidosis.

D. A client who is having an acute anxiety attack:
Acute anxiety is not typically associated with metabolic acidosis. It is not directly related to changes in acid-base balance.

A. Elevate the client’s head of bed B. Assess the client’s away. C. Prepare the client for intubation D. Suction the client’s mouth

Correct Answer is B

Explanation

A. Elevate the client’s head of bed:
Elevating the head of the bed is a good practice for patients on mechanical ventilation as it helps prevent complications such as aspiration. However, in the scenario where the client has pulled out the endotracheal tube, the immediate concern is assessing the airway and ensuring adequate oxygenation and ventilation. Elevating the head of the bed can be done later as needed.

B. Assess the client’s airway:
This is the correct and priority action. The nurse should assess the client's airway first to determine the extent of the situation. This involves checking for signs of airway obstruction, respiratory distress, or inadequate oxygenation. The assessment guides subsequent interventions.

C. Prepare the client for intubation:
While preparing for intubation may be necessary if the endotracheal tube is completely displaced, assessing the airway comes first. The nurse needs to gather information about the client's current condition before deciding on the appropriate course of action.

D. Suction the client’s mouth:
Suctioning may be necessary, especially if there are secretions or other obstructions in the mouth or airway. However, it should come after the initial assessment of the airway. If the client's airway is clear, suctioning may not be the immediate priority.

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A student is caring for a patient with positive end-expiratory pressure (PEEP) at 5 cm H20. The student asks “What is the purpose of PEEP?” which of the following is an appropriate response by the nurse?

Nursing Test Bank

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A nurse is reviewing the medical records of four clients who have an acid-base imbalance. The nurse should recognize that a clients is at risk for metabolic acidosis?

Correct Answer is C

Explanation

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Correct Answer is B

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