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. A client has a chest tube in place connected to a closed chest drainage system. Which of the following findings should indicate to the nurse that the client's lung has re-expanded?

• A. Oxygen saturation of 95%
• B. No fluctuations in the water seal chamber
• C. No reports of pleuritic chest pain
• D. Occasional bubbling in the water-seal chamber

Correct answer: B

Rationale: The absence of fluctuations in the water seal chamber indicates that the client's lung has re-expanded. This finding suggests that the negative pressure in the pleural space is restored, preventing air from entering the system. Oxygen saturation, absence of pleuritic chest pain, and occasional bubbling in the water-seal chamber are important assessments but do not specifically indicate lung re-expansion.

3. A client has been diagnosed with hypertension but does not take the antihypertensive medications because of a lack of symptoms. What response by the nurse is best?

• A. Do you have trouble affording your medications?
• B. Most people with hypertension do not have symptoms.
• C. You are lucky; most people get severe morning headaches.
• D. You need to take your medicine or you will get kidney failure.

Correct answer: B

Rationale: Most people with hypertension are asymptomatic, although a small percentage do have symptoms such as headache. The nurse should explain this to the client. Asking about paying for medications is not related because the client has already admitted nonadherence. Threatening the client with possible complications will not increase compliance.

4. A nurse in the PACU is assessing a client who has an endotracheal tube (ET) in place and observes the absence of left-sided chest wall expansion upon respiration. Which of the following complications should the nurse suspect?

• A. Blockage of the ET tube by the client's tongue
• B. Passage of the ET tube into the esophagus
• C. Movement of the ET tube into the right main bronchus
• D. Infection of the vocal cords

Correct answer: C

Rationale: When the nurse observes the absence of left-sided chest wall expansion upon respiration, it indicates that the endotracheal tube (ET) may have migrated into the right main bronchus, leading to uneven chest expansion. This can result in inadequate ventilation to the left lung, causing respiratory compromise. The other options, such as blockage of the ET tube by the client's tongue, passage of the ET tube into the esophagus, and infection of the vocal cords, do not directly explain the observed chest wall asymmetry and respiratory distress.

5. A client with a long history of smoking is being assessed by a nurse. Which finding is a common complication of chronic obstructive pulmonary disease (COPD)?

• A. Decreased anteroposterior chest diameter
• B. Increased breath sounds
• C. Prolonged expiratory phase
• D. Increased chest expansion

Correct answer: C

Rationale: In COPD, a prolonged expiratory phase is a typical finding caused by airway obstruction and air trapping. This results in difficulty expelling air from the lungs, leading to the characteristic prolonged exhalation in individuals with COPD.

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