Werkblad Laboratoriumwaarden en elektrolyten met antwoorden

In a person with HIV infection, a CD4 count below which level defines AIDS?

1. A50 cells/µL
2. B1,000 cells/µL
3. C200 cells/µL
4. D500 cells/µL

Which hemoglobin value in an adult man is within the typical reference range?

1. A5,5 g/dL (55 g/L)
2. B15,0 g/dL (150 g/L)
3. C9,0 g/dL (90 g/L)
4. D20,5 g/dL (205 g/L)

Welke laboratoriumuitslag hangt het nauwst samen met gele huid en ogen (icterus)?

1. AVerhoogd serumbilirubine
2. BLaag serumcalcium
3. CVerhoogd serumkalium
4. DLaag aantal bloedplaatjes

Why must vitamin B₁₂ deficiency be ruled out before treating macrocytic anemia with folic acid alone?

1. AFolic acid blocks the absorption of all B₁₂ from the diet
2. BFolic acid causes iron overload when B₁₂ levels are low
3. CFolic acid makes B₁₂ deficiency anemia much worse within a few days
4. DFolic acid can fix the anemia while B₁₂-related nerve damage continues

A patient taking spironolactone asks about using a salt substitute. What should the nurse explain?

1. ASalt substitutes are fine as long as the patient drinks more water
2. BSalt substitutes protect against the potassium loss caused by this drug
3. CMost salt substitutes contain potassium and can raise the level too high
4. DSalt substitutes are safe because they contain only sodium chloride

A breathless patient in the emergency department has a BNP below 100 pg/mL. What does this suggest?

1. AThe patient has had a myocardial infarction in the past day
2. BSevere heart failure is certainly the cause of the problem
3. CHeart failure is an unlikely cause of the breathlessness
4. DThe kidneys are failing and the patient needs dialysis

The nurse teaches a patient starting lithium. Which statement shows a need for further teaching?

1. A"I will cut out salt from my diet completely to stay healthy"
2. B"I will drink plenty of fluids, especially in hot weather"
3. C"I will check with the pharmacist before taking ibuprofen"
4. D"I will tell my doctor if I have vomiting or diarrhea"

A health care worker's hepatitis B tests show: HBsAg negative, anti-HBs positive, anti-HBc positive. What does this mean?

1. APast infection that has resolved, with immunity
2. BNot immune and never exposed to the virus
3. CCurrent chronic hepatitis B infection
4. DImmunity from vaccination only, never infected