A nurse is reviewing a client's arterial blood gas (ABG) results. Which of the following ABG results should the nurse anticipate when caring for a client with acidosis?
pH 7.42, PaCO2 48 mm HG, HCO3 25 mEq/L
pH 7.28, PaCO2 63 mm HG, HCO3 22 mEq/L
pH 7.49, PaCO2 30 mm Hg, HCO3 35 mEq/L
pH 7.36; PaCO2 42 mm Hg, HCO3 26 mEq/L
The Correct Answer is B
A. This result shows a slightly elevated PaCO2, which could suggest respiratory compensation for a metabolic alkalosis, not acidosis, as the pH is within the normal range.
B. This result indicates both a low pH and an elevated PaCO2, which are consistent with respiratory acidosis. The low HCO3 also suggests a metabolic acidosis component, making it the best match for a client with acidosis.
C. The elevated pH indicates alkalosis. The low PaCO2 and high HCO3 further suggest a primary respiratory alkalosis with metabolic compensation.
D. These values are within normal limits, indicating neither acidosis nor alkalosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. People mistakenly think they are experiencing seasonal allergies: While seasonal allergies may share some symptoms with the common cold, such as nasal congestion and sneezing, they are caused by allergens rather than viruses. This factor does not directly contribute to the high communicability of the common cold.
B. The virus is spread by individuals who don't have symptoms: The common cold is highly communicable because individuals infected with the virus can spread it to others even before they develop symptoms or when they have mild symptoms. This makes it challenging to prevent the spread of the virus, as infected individuals may not realize they are contagious.
C. Hand washing is not effective against the cold virus: Hand washing is an effective measure for preventing the spread of the common cold virus. Proper hand hygiene can help reduce the transmission of the virus from contaminated surfaces to the nose and mouth.
D. Use of over-the-counter cold products reduces immune resistance: Over-the-counter cold products may help relieve symptoms of the common cold but do not directly affect immune resistance. However, reliance on symptomatic relief without taking precautions to prevent the spread of the virus can contribute to its communicability.
Correct Answer is A
Explanation
A. Irregular pulsations: Premature ventricular contractions (PVCs) are abnormal heartbeats originating in the ventricles, causing irregularities in the heart rhythm. Auscultating the apical pulse during PVCs may reveal irregular pulsations due to the irregular timing of ventricular contractions.
B. Bounding pulsations: Bounding pulsations are typically associated with conditions such as hypertension or aortic valve regurgitation but are not specifically characteristic of PVCs.
C. Tachycardia: PVCs may occur in the setting of tachycardia, but the presence of PVCs themselves does not necessarily indicate a rapid heart rate. The rhythm may be irregular due to PVCs, but the overall heart rate may not be consistently elevated.
D. Bradycardia: PVCs are not typically associated with bradycardia. Bradycardia refers to a slow heart rate, while PVCs involve premature extra beats originating from the ventricles.
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