A nurse is caring for a client whose arterial blood gas results show the following results:. pH: 7.2. PaCO2: 50 mm Hg. HCO3: 24 mEq/L. The nurse should identify the client is experiencing which of the following acid-base conditions?
Respiratory acidosis.
Metabolic alkalosis.
Metabolic acidosis.
Respiratory alkalosis.
The Correct Answer is A
Choice A rationale:
The client's arterial blood gas (ABG) results indicate a low pH (acidemia) and high PaCO2, which is characteristic of respiratory acidosis. Respiratory acidosis occurs when there is inadequate removal of carbon dioxide (CO2) from the body, leading to an accumulation of CO2 and a decrease in pH. In this case, the high PaCO2 (50 mm Hg) indicates that the client is retaining carbon dioxide, likely due to impaired ventilation. The normal pH range is 7.35 to 7.45, and the normal PaCO2 range is 35 to 45 mm Hg. These ABG values reflect an acid-base imbalance in the respiratory system, specifically, respiratory acidosis.
Choice B rationale:
Metabolic alkalosis is characterized by an elevated pH and an increase in bicarbonate (HCO3) levels. This is not the condition described in the client's ABG results, as the pH is low (acidemic) and HCO3 levels are within the normal range (24 mEq/L).
Choice C rationale:
Metabolic acidosis is characterized by a low pH and a decreased HCO3 level. The client's ABG results do not align with metabolic acidosis since the pH is low (acidemic) and the HCO3 level is within the normal range (24 mEq/L).
Choice D rationale:
Respiratory alkalosis is characterized by a high pH and low PaCO2. The client's ABG results do not match this condition as the pH is low (acidemic) and the PaCO2 is high (50 mm Hg), indicating respiratory acidosis. Therefore, choice A, respiratory acidosis, is the correct interpretation of the ABG results.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
Restricting visitation is an essential intervention during an influenza outbreak in a long-term care facility. Influenza is highly contagious and can spread rapidly among residents and staff in a close environment like a long-term care facility. By limiting visitation, the facility can reduce the risk of introducing the virus from the outside and help contain the outbreak. This is a preventive measure to protect vulnerable residents from exposure to the virus.
Choice B rationale:
Providing prophylactic antibiotics for clients who have been exposed to influenza is not a recommended intervention. Influenza is caused by a virus, not bacteria, so antibiotics are ineffective in preventing or treating the infection. Antibiotics should only be used to treat bacterial infections, not viral ones. Inappropriate use of antibiotics can lead to antibiotic resistance and other adverse effects.
Choice C rationale:
Implementing airborne precautions for clients who have influenza is not typically necessary. Influenza primarily spreads through respiratory droplets when an infected person coughs or sneezes. Standard precautions, such as proper hand hygiene and wearing masks when in close contact with infected individuals, are usually sufficient to prevent the spread of the virus. Airborne precautions are typically reserved for diseases that are transmitted through the airborne route, like tuberculosis.
Choice D rationale:
Assigning healthcare personnel to nondirect care activities for 24 hours after developing influenza symptoms is not a recommended intervention. While it's important for healthcare personnel to stay home when they are sick to prevent the spread of the virus, 24 hours may not be a necessary duration. The standard guideline for healthcare workers with influenza is to stay home until they are fever-free for at least 24 hours without the use of fever-reducing medications.
Correct Answer is B
Explanation
Choice A rationale:
Extreme thirst is not a typical finding in a client with hypokalemia. Hypokalemia is an electrolyte imbalance that can lead to symptoms like weakness and irregular heartbeats, but extreme thirst is not a direct result of low potassium levels.
Choice B rationale:
"Weak, irregular pulse" is the correct response. Hypokalemia can lead to cardiac arrhythmias, which may manifest as a weak, irregular pulse. Potassium plays a crucial role in maintaining the electrical activity of the heart, and low levels can disrupt normal heart rhythms.
Choice C rationale:
Hyperactive bowel sounds are not typically associated with hypokalemia. Instead, you might expect diminished or absent bowel sounds in severe cases due to muscle weakness.
Choice D rationale:
Hyperactive reflexes are not typically associated with hypokalemia. Instead, hypokalemia can lead to muscle weakness and potentially even paralysis in severe cases.
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