Lembar kerja Nilai laboratorium & elektrolit dengan jawaban

What is the usual BUN-to-creatinine ratio in a healthy adult (using mg/dL)?

1. AAbout 10:1 to 20:1
2. BAbout 100:1 to 200:1
3. CAbout 1:1 to 2:1
4. DAbout 50:1 to 60:1

What is a typical reference range for the prothrombin time (PT) in a person not taking anticoagulants?

1. AAbout 2–4 seconds
2. BAbout 11–13,5 seconds
3. CAbout 60–90 seconds
4. DAbout 3–5 minutes

In a standard 2-hour oral glucose tolerance test, what does the patient do?

1. ADrinks a measured glucose solution, and glucose is checked 2 hours later
2. BEats a normal meal, and glucose is checked once later that evening
3. CFasts for 3 days, and glucose is checked every morning before breakfast
4. DReceives an insulin injection, and glucose is checked each hour

Why is a baseline platelet count taken before starting heparin therapy?

1. ABecause heparin increases the platelet count to dangerous levels
2. BSo a later fall from heparin-induced thrombocytopenia is detected
3. CSo that the INR can be calculated from the platelet count later
4. DBecause heparin is given at a dose based on the platelet count

An older adult with chronic kidney disease starts trimethoprim-sulfamethoxazole for a urinary tract infection. Which electrolyte should be monitored closely?

1. AChloride, because the drug causes chloride loss
2. BPotassium, because trimethoprim can raise it
3. CSodium, because the drug causes heavy sodium retention
4. DCalcium, because the drug binds calcium in the gut

A patient has taken hydrochlorothiazide for several years. Which laboratory change is a recognized effect of this drug?

1. AA fall in blood glucose
2. BA fall in serum calcium
3. CA rise in serum potassium
4. DA rise in serum uric acid

A patient with SIADH is on fluid restriction. Which task can the RN delegate to unlicensed assistive personnel (UAP), such as a nursing or healthcare assistant?

1. AAssessing the patient for new confusion
2. BTeaching the reasons for fluid restriction
3. CDeciding when to recheck the sodium level
4. DMeasuring and recording intake and output

The nurse teaches a patient about the HbA1c test. Which statement shows a need for further teaching?

1. A"I must not eat anything for 12 hours before the HbA1c test"
2. B"The test shows my average glucose over the past few months"
3. C"My daily finger-stick readings still matter between the tests"
4. D"A lower result means less risk of damage to my eyes and kidneys"