A nurse is caring for a client who is scheduled for a blood sampling for a serum creatinine level. The client asks the nurse, "What is the purpose of this test?" Which of the followingresponses should the nurse give?

Choice A Rationale: The correct method for cleansing the area before collecting a midstream urine specimen is to wipe from front to back, not back-and-forth. This is to avoid contamination of the specimen with bacteria from the anal area. The towelette should be used in a single stroke and then discarded to ensure cleanliness.

Choice B Rationale: Using the nondominant hand to spread the labia is a standard practice that allows the dominant hand to manipulate the collection container. This technique helps to prevent contamination of the specimen by keeping the container away from the body and ensuring a clean catch.

Choice C Rationale: It is important to start the flow of urine before collecting the specimen to ensure that the 'midstream' urine is captured. This helps to flush out any bacteria that may be present at the opening of the urethra, reducing the risk of contaminating the sample.

Choice D Rationale: The specimen container should be removed from the stream before stopping the flow of urine to avoid contamination. The initial and final parts of the urine stream can carry bacteria from the urethra and skin, so only the midstream should be collected in the container.

a. Serum potassium: Furosemide is a loop diuretic that can lead to potassium loss, potentially causing hypokalemia. Monitoring potassium levels is crucial to prevent complications such as cardiac arrhythmias.

b. Serum amylase: This is not directly related to furosemide therapy. Amylase is an enzyme associated with pancreatic and salivary function.

c. Serum triglyceride: Furosemide does not typically have a direct impact on serum triglyceride levels.

d. Serum cholesterol: Furosemide does not typically have a direct impact on serum cholesterol levels.