A nurse is caring for a client who has tuberculosis and is about to start taking pyrazinamide.
The nurse should identify that the client needs which of the following tests while taking this medication therapy?

Choice A rationale:

The nurse should identify that the client needs liver function tests while taking pyrazinamide. Pyrazinamide is one of the drugs used to treat tuberculosis, and it is known to potentially cause hepatotoxicity (liver damage). Regular monitoring of liver function tests, including liver enzymes like ALT and AST, is essential to detect any liver-related issues early and ensure the client's safety during the medication therapy.

Choice B rationale:

Thyroid function studies are not typically necessary while a client is taking pyrazinamide. Pyrazinamide is not known to have a direct effect on thyroid function.

Choice C rationale:

Blood glucose levels do not need to be monitored specifically due to pyrazinamide therapy. Although some antituberculosis drugs may affect blood sugar levels, pyrazinamide is not a common culprit for such side effects.

Choice D rationale:

Gallbladder studies are not typically indicated while taking pyrazinamide. Pyrazinamide is not known to cause specific issues related to the gallbladder. Monitoring liver function is more critical due to its potential hepatotoxicity.

The correct answer is: C.

Choice A reason: A pH of 7.50 and HCO3 of 31 mm Hg suggest a metabolic alkalosis due to the high bicarbonate level. However, during a panic attack, hyperventilation leads to respiratory alkalosis, not metabolic, due to the excessive exhalation of CO2, which is not consistent with this option.

Choice B reason: A pH of 7.30 and HCO3 of 19 mm Hg indicate a metabolic acidosis due to the low bicarbonate level. This is not typically associated with hyperventilation during a panic attack, which usually causes respiratory alkalosis, characterized by a decrease in CO2 levels and an increase in pH.

Choice C reason: A pH of 7.47 and PaCO2 of 31 mm Hg are indicative of respiratory alkalosis, which is expected during hyperventilation as a result of a panic attack. Hyperventilation causes a decrease in carbon dioxide (PaCO2) levels, leading to an increase in pH. The normal ranges for arterial blood gases are: pH 7.35-7.45, PaCO2 35-45 mm Hg, and HCO3 22-26 mEq/L.

Choice D reason: A pH of 7.32 and PaCO2 of 50 mm Hg suggest respiratory acidosis due to the elevated PaCO2 level. This would be more consistent with hypoventilation, which is not the case during a panic attack where hyperventilation occurs.