Werkblad Laboratoriumwaarden en elektrolyten met antwoorden

Which sample is commonly used to screen a patient for MRSA carriage on admission?

1. AA clean-catch midstream urine sample
2. BA blood culture from one arm
3. CA sample of stool sent for culture
4. DA swab from the front of the nose

Which gland produces thyroid-stimulating hormone (TSH)?

1. AThe anterior pituitary gland
2. BThe parathyroid glands
3. CThe adrenal cortex
4. DThe thyroid gland itself

A patient on warfarin asks what an INR of 2,0 means. Which explanation is best?

1. AYour blood takes about twice as long as normal to clot
2. BYour blood clots about twice as fast as is normal
3. CYou have twice the normal number of platelets
4. DYour warfarin dose is twice what it should be

Why is a blood β-hydroxybutyrate level often preferred to a urine ketone dipstick in DKA?

1. AIt shows the average ketone level over the past three months
2. BThe urine dipstick only detects ketones in people without diabetes
3. CIt measures the main ketone in DKA, and the dipstick may miss it
4. DIt is the only test that can measure glucose and ketones together

Which blood collection practice helps prevent hemolysis of the sample?

1. AForcing blood quickly through a needle into the tube
2. BUsing the smallest needle available for every patient
3. CGently inverting the tubes instead of shaking them
4. DLeaving the tourniquet on for at least 3 minutes

In countries that screen all pregnant women (such as the US), a vaginal-rectal swab is taken at about 36–37 weeks. Which organism is it screening for?

1. AGroup B Streptococcus
2. BStaphylococcus aureus
3. CCandida albicans
4. DHepatitis B virus

The nurse teaches a patient with severe neutropenia after chemotherapy. Which statement shows a need for further teaching?

1. A"I'll wash my hands before eating and after the toilet"
2. B"I'll call the clinic if my temperature rises"
3. C"I'll check my temperature rectally to be accurate"
4. D"I'll avoid people who have a cold or the flu"

A patient's creatinine was 0,9 mg/dL (80 µmol/L) on admission and is 1,3 mg/dL (115 µmol/L) 36 hours later. Using the common KDIGO criteria, what does this show?

1. AChronic kidney disease, because creatinine has risen above baseline
2. BAcute kidney injury, because it rose by at least 0,3 mg/dL within 48 hours
3. CA laboratory error, because creatinine cannot change within 2 days
4. DNo kidney injury, because the creatinine is still within the normal range