Werkblad Laboratoriumwaarden en elektrolyten met antwoorden

Which substance contributes most to normal serum osmolality?

1. ASodium and its anions
2. BPlasma albumin
3. CGlucose in plasma
4. DUrea (from BUN)

Using American Diabetes Association (ADA) criteria, which HbA1c range is classed as prediabetes?

1. A6,5–7,5% (48–58 mmol/mol)
2. B8,0–9,0% (64–75 mmol/mol)
3. C4,0–5,6% (20–38 mmol/mol)
4. D5,7–6,4% (39–47 mmol/mol)

Which blood group is the universal donor for red blood cells in an emergency?

1. AGroup O, Rh negative
2. BGroup A, Rh negative
3. CGroup AB, Rh positive
4. DGroup B, Rh positive

A patient taking phenazopyridine for bladder pain has bright orange urine. What should the nurse know about urine tests?

1. AThe color shows severe liver failure is present
2. BThe color proves blood is present in the urine
3. CThe dye can interfere with dipstick color readings
4. DThe drug improves the accuracy of all dipsticks

A stool test for Clostridioides difficile is ordered. Which sample is appropriate?

1. AA rectal swab from a patient with constipation
2. BAny stool after a laxative dose
3. CAn unformed (liquid or soft) stool
4. DA formed, hard stool sample

A patient with chronic kidney disease receives an erythropoiesis-stimulating agent such as epoetin alfa. Which assessments are most important?

1. AHemoglobin and blood pressure
2. BLiver enzymes and bilirubin
3. CSerum glucose and ketones
4. DSerum amylase and lipase

Four patients had a thyroidectomy earlier today. Which result should the nurse act on first?

1. AGlucose 145 mg/dL (8,0 mmol/L) after surgery
2. BSodium 136 mEq/L on IV fluids after surgery
3. CCalcium 7,2 mg/dL (1,8 mmol/L) with tingling lips
4. DHemoglobin 12,1 g/dL (121 g/L) after surgery

A patient has sudden episodes of severe headache, sweating, palpitations and very high blood pressure. Which test is most useful to look for the cause?

1. AFasting lipid profile
2. BPlasma free metanephrines
3. CSerum calcium only
4. DSerum TSH and free T₄