The nurse reviews the arterial blood gas results of an assigned client and notes the laboratory report results
pH of 7.30, [normal pH is 7.35 to 7.45]
Paco2 of 58 mm Hg, [Normal Paco2 is 35 to 45 mm Hg]
Pao2 of 80 mm Hg. [normal is 80-100]
HCO3 of 27 mEq/L (27 mmol/L). [Normal HCO3 is 22-26]
The nurse interprets that the client has which acid-base disturbance?
Respiratory acidosis
Respiratory alkalosis
Metabolic acidosis
Metabolic alkalosis
The Correct Answer is A
A. Respiratory acidosis: The pH is low (indicating acidosis), and the Paco₂ is elevated, which signifies that carbon dioxide retention is causing the acidosis. This pattern indicates respiratory acidosis, as the elevated HCO₃ suggests a compensatory response.
B. Respiratory alkalosis: Respiratory alkalosis would show a high pH with a low Paco₂. This is not consistent with the client’s lab results.
C. Metabolic acidosis: Metabolic acidosis would show a low pH with a low HCO₃. In this case, the HCO₃ is slightly elevated, ruling out metabolic acidosis.
D. Metabolic alkalosis: Metabolic alkalosis would show a high pH with an elevated HCO₃, which does not match the client’s results.
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Correct Answer is ["B","C","E"]
Explanation
A. The diaphragm of the stethoscope is used for high-pitched sounds, such as lung and normal heart sounds, not low-pitched sounds.
B. The binaural (earpieces) should fit snugly in the ears to ensure proper sound transmission and clarity.
C. Short tubing provides more accurate sounds by minimizing sound distortion, making it ideal for clinical use.
D. The bell of the stethoscope is used for low-pitched sounds, such as heart murmurs, not high-pitched sounds.
E. The stethoscope works by blocking out environmental sounds to help the user focus on internal body sounds.
Correct Answer is A
Explanation
A. Asking the client to identify scented aromas assesses cranial nerve I (olfactory nerve), which is responsible for the sense of smell.
B. Reading a Snellen chart assesses cranial nerve II (optic nerve), which is related to vision.
C. Listening to the client's speech evaluates the function of cranial nerves V (trigeminal) and XII (hypoglossal), which are related to mastication and tongue movement, respectively.
D. Asking the client to clench his teeth tests cranial nerve V, which innervates the muscles of mastication.