A nurse is reviewing the arterial blood gas values for a client. The nurse should recognize that the values indicate which of the following acid-base imbalances?
The values are:
- pH: 7.56
- PaCO2: 55 mmHg
- HCO3: 33 mEq/L
Normal ranges:
- pH: 7.35-7.45
- PaCO2: 35-45 mmHg
- HCO3: 22-28 mEq/L
Metabolic Alkalosis
Metabolic Acidosis
Respiratory Alkalosis
Respiratory Acidosis
The Correct Answer is A
Choice A Reason:
Metabolic Alkalosis is correct. The pH of 7.56 is above the normal range (7.35-7.45), indicating alkalosis. The HCO3 level of 33 mEq/L is also above the normal range (22-28 mEq/L), which suggests a metabolic cause. In metabolic alkalosis, the body has an excess of bicarbonate or a loss of hydrogen ions.
Choice B Reason:
Metabolic Acidosis is incorrect. Metabolic acidosis is characterized by a low pH (below 7.35) and a low HCO3 level (below 22 mEq/L). The given values indicate alkalosis, not acidosis.
Choice C Reason:
Respiratory Alkalosis is incorrect. Respiratory alkalosis is characterized by a high pH (above 7.45) and a low PaCO2 (below 35 mmHg). In this case, the PaCO2 is elevated (55 mmHg), which does not align with respiratory alkalosis.
Choice D Reason:
Respiratory Acidosis is incorrect. Respiratory acidosis is characterized by a low pH (below 7.35) and a high PaCO2 (above 45 mmHg). While the PaCO2 is elevated, the pH indicates alkalosis, not acidosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: Encouraging the patient to drink more fluids is a primary intervention for managing thick respiratory secretions. Adequate hydration helps to thin the mucus, making it easier to expectorate. Fluids such as water, herbal teas, and clear broths are particularly effective. The normal daily fluid intake for an adult is about 2-3 liters, depending on individual needs and health conditions.
Choice B reason: Getting a prescription for an antitussive agent is not the best initial approach for managing thick respiratory secretions. Antitussive agents are used to suppress coughing, which can be counterproductive when trying to clear mucus from the respiratory tract. Instead, expectorants or mucolytics are more appropriate as they help to thin and loosen the mucus.
Choice C reason: Teaching effective deep breathing is beneficial for overall lung health and can help in mobilizing secretions. However, it is not as immediately effective as increasing fluid intake for thinning thick secretions. Deep breathing exercises can be part of a comprehensive respiratory care plan but should be combined with other interventions like hydration.
Choice D reason: Changing the patient’s position every 2 hours is a good practice for preventing complications such as pressure ulcers and promoting lung expansion. However, it is not specifically targeted at thinning thick respiratory secretions. Positional changes can aid in the drainage of secretions but are secondary to ensuring adequate hydration.
Correct Answer is B
Explanation
Choice A reason: Placing a surgical mask on the client during transport is not the primary precaution for C. difficile infections. C. difficile is primarily transmitted through contact with contaminated surfaces and not through respiratory droplets. Therefore, while masks may be used for other infections, they are not the main precaution for C. difficile.
Choice B reason: Using gown and gloves when entering the room is essential for preventing the spread of C. difficile. This infection is highly contagious and can be transmitted through contact with contaminated surfaces or feces. Gown and gloves provide a barrier that helps prevent the transmission of the bacteria to healthcare workers and other patients.
Choice C reason: Using an alcohol-based agent to perform hand hygiene is not effective against C. difficile spores. Hand washing with soap and water is recommended because it is more effective at removing the spores from the hands. Alcohol-based hand sanitizers do not kill C. difficile spores and should not be relied upon for hand hygiene in this context.
Choice D reason: Obtaining a blood specimen to test for C. difficile is not the standard diagnostic method. C. difficile infections are typically diagnosed through stool tests that detect the presence of the bacteria or its toxins. Blood tests are not used for diagnosing C. difficile infections.
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