Lembar kerja Nilai laboratorium & elektrolit dengan jawaban

A tuberculin skin test (TST) is read as positive. What does this mean?

1. AThe person is fully immune and can never develop TB
2. BThe person has never been exposed to TB bacteria
3. CThe person definitely has active, contagious pulmonary TB
4. DThe person has been infected with TB bacteria at some point

For a fasting plasma glucose test, the patient should have had no caloric intake for at least:

1. A1 hour
2. B8 hours
3. C24 hours
4. D3 hours

Where is urea, measured as blood urea nitrogen (BUN), made?

1. AIn the liver, from the breakdown of protein
2. BIn the muscles, from the breakdown of creatine
3. CIn the kidneys, from the breakdown of glucose
4. DIn the bone marrow, from old red blood cells

A patient with an upper gastrointestinal bleed has a BUN of 48 mg/dL (urea 17 mmol/L) and a normal creatinine. What is the most likely explanation?

1. AThe liver has stopped making urea because of the bleeding
2. BThe kidneys have suddenly lost most of their function
3. CDigested blood adds protein, which the liver turns into urea
4. DSkeletal muscle is breaking down because of the blood loss

Seorang pasien yang dijadwalkan menerima digoksin memiliki kalium 3,1 mEq/L. Mengapa hasil ini penting?

1. AKalium rendah melindungi jantung dari efek samping digoksin
2. BKalium rendah meningkatkan risiko toksisitas digoksin
3. CKalium dan digoksin tidak berinteraksi
4. DKalium rendah membuat digoksin tidak efektif, sehingga dosis harus digandakan

Which change in clotting tests is normal in late pregnancy?

1. AFibrinogen and D-dimer rise
2. BINR rises to about 3,0
3. CPlatelets rise above 600 × 10³/µL
4. DaPTT doubles from baseline

A patient's potassium is 7,2 mEq/L, and the monitor shows wide QRS complexes. Several treatments are prescribed. Which should be given first?

1. AUrgent hemodialysis session
2. BIV furosemide (a loop diuretic)
3. CAn oral potassium binder dose
4. DIV calcium gluconate (or chloride)

A patient with a round face, central weight gain and purple stretch marks has a glucose of 210 mg/dL (11,7 mmol/L) and a potassium of 3,1 mEq/L. Which condition fits best?

1. ADiabetes insipidus
2. BAdrenal insufficiency
3. CHypothyroidism
4. DCushing syndrome