A nurse is reviewing the laboratory results of a client who is postoperative and has a respiratory rate of 7/min. The arterial blood gas (ABG) values include: pH 7.22 PaCO2 68 mm Hg Base excess -2 PaO2 78 mm Hg Oxygen saturation 80% Bicarbonate 28 mEq/L. Which of the following interpretations of the ABG values should the nurse make?
Metabolic acidosis
Respiratory acidosis
Metabolic alkalosis
Respiratory alkalosis
The Correct Answer is B
A. Metabolic acidosis
Metabolic acidosis is characterized by a low pH (< 7.35) and a decreased bicarbonate level (< 22 mEq/L). In this scenario, the pH is low (7.22), but the bicarbonate level is elevated (28 mEq/L), which does not support a diagnosis of metabolic acidosis.
B. Respiratory acidosis
Respiratory acidosis occurs when there is an accumulation of carbon dioxide (PaCO2 > 45 mm Hg), leading to a decrease in pH (< 7.35). In this case, the pH is low (7.22), and the PaCO2 is elevated (68 mm Hg), consistent with respiratory acidosis.
C. Metabolic alkalosis
Metabolic alkalosis is characterized by a high pH (> 7.45) and an elevated bicarbonate level (> 26 mEq/L). In this scenario, the pH is low (7.22), and the bicarbonate level is also elevated (28 mEq/L), which does not support a diagnosis of metabolic alkalosis.
D. Respiratory alkalosis
Respiratory alkalosis occurs when there is a decrease in carbon dioxide (PaCO2 < 35 mm Hg), leading to an increase in pH (> 7.45). In this case, the pH is low (7.22), and the PaCO2 is elevated (68 mm Hg), which is not consistent with respiratory alkalosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Encourage fluid intake of 2.5 L per day.
This is an appropriate intervention for a client with pneumonia. Increasing fluid intake helps to thin respiratory secretions, making them easier to cough up and clear from the airways. Adequate hydration also supports overall health and immune function. However, the nurse should consider the client's individual fluid tolerance and any comorbid conditions such as heart failure that may necessitate fluid restriction.
B. Assist the client to cough and deep breathe every 4 hr.
This intervention is also appropriate for a client with pneumonia. Coughing and deep breathing exercises help to mobilize and clear respiratory secretions, preventing complications such as atelectasis and pneumonia. However, the frequency of coughing and deep breathing may need to be tailored to the client's tolerance and respiratory status.
C. Encourage independence in completing ADLs.
While promoting independence in activities of daily living (ADLs) is generally beneficial for older adult clients, in the context of pneumonia, the priority is to ensure adequate rest and conserve energy for recovery. Depending on the severity of the illness, the client may experience fatigue and dyspnea, making it challenging to perform ADLs independently. The nurse should assess the client's functional status and provide assistance as needed while promoting independence to the extent possible.
D. Use an N-95 respirator when providing client care.
This intervention is not directly relevant to the care plan for a client with pneumonia. N-95 respirators are primarily used for respiratory protection against airborne infectious agents such as tuberculosis or certain viral infections like COVID-19. While standard precautions should be followed when caring for a client with pneumonia to prevent the spread of infection, including hand hygiene and appropriate use of personal protective equipment (PPE), an N-95 respirator is not typically indicated unless the client has a specific respiratory pathogen requiring airborne precautions.
Correct Answer is B
Explanation
A. Notify the provider.
This choice suggests involving the healthcare provider immediately. While notifying the provider might eventually be necessary if the issue persists, it's not the initial action in this scenario. The nurse should first assess and troubleshoot the situation before escalating it to the provider.
B. Verify that the suction regulator is on.
This is the correct choice. When there is no bubbling in the suction control chamber of a chest tube, it may indicate that suction is not being applied properly. Verifying that the suction regulator is turned on and set to the correct level ensures that suction is being delivered to the chest tube.
C. Continue to monitor the client because this is an expected finding.
This choice is incorrect. The absence of bubbling in the suction control chamber is not an expected finding and suggests a potential problem with the suction system. Ignoring this finding without taking any action could lead to complications for the client.
D. Milk the chest tube to dislodge any clots in the tubing that may be occluding it.
Milking the chest tube is a technique used to maintain patency and promote drainage in chest tubes, but it should not be the first action when there is no bubbling in the suction control chamber. This action does not address the underlying issue of inadequate suction and may not be appropriate without first ensuring that suction is functioning correctly.
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