A nurse is reinforcing teaching with a client who is to start taking montelukast to treat asthma. Which of the following statements by the client indicates an understanding of the teaching?

A. Liver function tests

This is the correct choice. Pyrazinamide, a medication used in the treatment of tuberculosis, is known to potentially cause hepatotoxicity, which refers to liver damage or dysfunction. Therefore, clients prescribed pyrazinamide should undergo regular monitoring of liver function tests to assess for any signs of liver injury or impairment. Liver function tests typically include measurements of various enzymes and proteins produced by the liver, such as alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), and bilirubin levels.

B. Gallbladder studies

Gallbladder studies are not typically indicated for clients taking pyrazinamide. While pyrazinamide can rarely cause hepatotoxicity, which may affect liver function, it is not known to specifically target or affect the gallbladder. Therefore, routine gallbladder studies are not necessary for clients taking pyrazinamide.

C. Thyroid function studies

Pyrazinamide is not known to directly affect thyroid function. Therefore, routine thyroid function studies are not indicated for clients taking pyrazinamide unless there are specific signs or symptoms suggesting thyroid dysfunction.

D. Blood glucose levels

Pyrazinamide is not known to directly affect blood glucose levels. Therefore, routine monitoring of blood glucose levels is not indicated for clients taking pyrazinamide unless there are specific reasons to suspect or monitor for diabetes mellitus or other conditions affecting blood glucose regulation.

A. Inspiratory stridor

Inspiratory stridor is a high-pitched, musical sound heard during inspiration and is typically caused by turbulent airflow due to partial obstruction of the upper airway. It is commonly associated with conditions such as croup, epiglottitis, or anaphylaxis. While respiratory distress may occur in a pneumothorax, inspiratory stridor specifically suggests an upper airway obstruction rather than a pneumothorax.

B. Expiratory wheeze

Expiratory wheeze is a high-pitched, musical sound heard during expiration and is typically associated with conditions such as asthma, chronic obstructive pulmonary disease (COPD), or bronchiolitis. Wheezing occurs due to narrowing of the airways, leading to turbulent airflow during expiration. While a pneumothorax can cause respiratory distress, it is not typically associated with wheezing.

C. Absence of breath sounds

The absence of breath sounds over a particular area of the chest can indicate a pneumothorax. In a pneumothorax, air accumulates in the pleural space, causing partial or complete collapse of the lung and preventing it from making contact with the chest wall. This absence of breath sounds over the affected area is a classic finding in a pneumothorax and is crucial for its detection.

D. Coarse crackles

Coarse crackles are discontinuous, bubbling or popping sounds heard during inspiration and may be indicative of conditions such as pneumonia, pulmonary edema, or bronchiectasis. These crackles are typically heard when there is fluid or mucus in the airways. While a pneumothorax can cause respiratory distress, it does not typically produce crackles on auscultation.