Nursing Elites

1. A client's arterial blood gas results show a pH of 7.3 and a PaCO2 of 50 mm Hg. The client is experiencing which of the following acid-base imbalances?

• A. Metabolic acidosis
• B. Metabolic alkalosis
• C. Respiratory acidosis
• D. Respiratory alkalosis

Correct answer: C

Rationale: In respiratory acidosis, there is an excess of carbon dioxide (PaCO2 > 45 mm Hg) leading to a decrease in pH (<7.35). The given values of a pH of 7.3 and PaCO2 of 50 mm Hg indicate respiratory acidosis. Metabolic acidosis involves a primary decrease in bicarbonate levels with a compensatory decrease in PaCO2 to maintain balance. Metabolic alkalosis is characterized by elevated pH and bicarbonate levels. Respiratory alkalosis is marked by low PaCO2 and increased pH levels.

2. Which action should the nurse take to reduce the risk of ventilator-associated pneumonia in a client with an endotracheal tube receiving mechanical ventilation?

• A. Position the head of the client's bed flat
• B. Turn the client every 4 hours
• C. Brush the client's teeth with a suction toothbrush every 12 hours
• D. Provide humidity by maintaining moisture within the ventilator tubing

Correct answer: C

Rationale: Ventilator-associated pneumonia (VAP) is a common complication in clients receiving mechanical ventilation. Oral hygiene is crucial in reducing the risk of VAP. Brushing the client's teeth with a suction toothbrush every 12 hours helps prevent bacterial colonization in the oral cavity, which can be aspirated into the lungs. Positioning the head of the bed flat can increase the risk of aspiration. Turning the client every 4 hours is important for preventing pressure ulcers but not directly related to reducing VAP. Providing humidity in the ventilator tubing helps maintain airway moisture but does not directly address the risk of VAP.

3. A client who will undergo a bronchoscopy procedure with a rigid scope and general anesthesia will have their neck in which of the following positions?

• A. A flexed position
• B. An extended position
• C. A neutral position
• D. A hyperextended position

Correct answer: D

Rationale: During a bronchoscopy with a rigid scope and general anesthesia, the provider will typically place the client's neck in a hyperextended position to allow better visualization and access to the airways. This position helps to align the trachea for easier insertion of the scope.

4. A client has a mediastinal chest tube. Which symptom requires the nurse's immediate intervention?

• A. Production of pink sputum
• B. Tracheal deviation
• C. Drainage greater than 70 mL/hr
• D. Sudden onset of shortness of breath

Correct answer: B

Rationale: Immediate intervention is required if the client exhibits tracheal deviation as it could indicate a tension pneumothorax, a life-threatening condition that requires prompt attention to prevent respiratory compromise. Production of pink sputum may indicate bleeding but would not be as immediately life-threatening as tracheal deviation. Drainage greater than 70 mL/hr could indicate hemorrhage, which also requires attention but is not as urgent as tracheal deviation. Sudden onset of shortness of breath could indicate various issues, including dislodgment of the tube or pneumothorax, which require intervention but are not as critical as tracheal deviation in this context.

5. A client is hospitalized with a second episode of pulmonary embolism (PE). Recent genetic testing reveals the client has an alteration in the gene CYP2C19. What action by the nurse is best?

• A. Instruct the client to eliminate all vitamin K from the diet.
• B. Prepare preoperative teaching for an inferior vena cava (IVC) filter.
• C. Refer the client to a chronic illness support group.
• D. Teach the client to use a soft-bristled toothbrush.

Correct answer: B

Rationale: Clients with an alteration in the CYP2C19 gene do not metabolize warfarin (Coumadin) well, leading to higher blood levels and more side effects. As this client is a poor candidate for warfarin therapy, the prescriber will most likely recommend the implantation of an inferior vena cava (IVC) filter. This device helps prevent blood clots from reaching the lungs, reducing the risk of pulmonary embolism.

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