The nurse reviews the client's arterial blood gases and has the following results: pH 7.30. PaCO2 58, and HCO3 of 26. The nurse interprets these results that the client has which acid-base imbalance?
Respiratory Alkalosis
Metabolic Acidosis
Metabolic alkalosis
Respiratory acidosis
The Correct Answer is D
A. Respiratory Alkalosis: Would have high pH (>7.45) and low PaCO2 (<35 mmHg).
B. Metabolic Acidosis: Would have low pH and low HCO3 (<22 mEq/L).
C. Metabolic Alkalosis: Would have high pH and high HCO3 (>26 mEq/L).
D. Respiratory Acidosis: A low pH (<7.35) and high PaCO2 (>45 mmHg) indicate respiratory acidosis, which occurs due to hypoventilation, COPD, or respiratory failure. The bicarbonate (HCO3) is normal, meaning there is no metabolic compensation yet.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Diphenhydramine: An antihistamine used for motion sickness, but not first-line for severe nausea and dehydration.
B. Famotidine: A histamine-2 blocker used for acid reflux, not nausea control.
C. Omeprazole: A proton pump inhibitor for acid suppression, not for nausea and vomiting.
D. Ondansetron: Ondansetron (Zofran) is a serotonin (5-HT3) receptor antagonist that is highly effective for nausea and vomiting, especially in dehydration and severe vomiting.
Correct Answer is D
Explanation
A. “This is called a thrill and it means that your fistula is not working.” A thrill is a normal finding and means the fistula is functioning properly.
B. "This is not a normal sign; we will call your provider right away.” A lack of thrill is abnormal, not the presence of one.
C. "This is called a bruit and it shows that your fistula is patent." The thrill is felt and the bruit is heard.
D. "This is called a thrill and it means that your fistula is patent." A thrill (vibration) is a normal finding in an AV fistula and indicates adequate blood flow. A bruit (whooshing sound) is heard on auscultation and also confirms patency.
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