Werkblad Laboratoriumwaarden en elektrolyten met antwoorden

Which laboratory test is traditionally used to adjust a continuous infusion of unfractionated heparin?

1. AErythrocyte sedimentation rate (ESR)
2. BActivated partial thromboplastin time (aPTT)
3. CPlatelet function assay (PFA-100 test)
4. DInternational normalized ratio (INR)

A raised eosinophil count is most typical of:

1. AAcute blood loss after trauma
2. BAcute bacterial pneumonia and sepsis
3. CViral infections such as glandular fever
4. DAllergic conditions and parasitic infections

Why is prealbumin (transthyretin) sometimes used to follow a patient's nutritional status instead of albumin?

1. AIt has a short half-life, so it changes within days
2. BIt has a long half-life, so it changes over months
3. CIt is measured in urine, so no blood test is needed
4. DIt is not affected by inflammation or liver disease

On the first day after major surgery, a patient's white cell count is 12,5 × 10³/µL, with no fever or wound signs. What is the best interpretation?

1. AA sign of leukemia that needs bone marrow testing
2. BA laboratory error, since surgery lowers white cells
3. CDefinite wound infection that needs antibiotics now
4. DA common stress response to surgery that is monitored

A patient is scheduled for a liver biopsy. Which laboratory results should the nurse check before the procedure?

1. ATSH and free T₄
2. BPlatelet count and PT/INR
3. CHbA1c and lipid panel
4. DSerum sodium and chloride

A patient has taken a proton pump inhibitor (such as omeprazole) for many years and now has muscle cramps and tremor. Which electrolyte is most likely to be low?

1. AMagnesium
2. BSodium
3. CChloride
4. DPhosphate

A woman who is 34 weeks pregnant has high blood pressure, right upper abdominal pain, a platelet count of 70 × 10³/µL, raised ALT and AST, and a raised LDH. Which condition fits best?

1. AAcute cholecystitis
2. BPhysiologic anemia of pregnancy
3. CGestational diabetes
4. DHELLP syndrome

A patient's low calcium does not improve despite several days of calcium replacement. Which other electrolyte should be checked and corrected?

1. AMagnesium
2. BSodium
3. CBicarbonate
4. DChloride