Werkblad Laboratoriumwaarden en elektrolyten met antwoorden

How does dehydration usually affect the hematocrit?

1. AIt lowers it
2. BIt has no effect
3. CIt raises it
4. DIt makes it zero

A raised procalcitonin level most strongly suggests:

1. AAn allergic reaction
2. BA viral common cold
3. CIron-deficiency anemia
4. DA bacterial infection

What does the reticulocyte count measure?

1. AOld red blood cells that are being removed by the spleen
2. BImmature white blood cells released during infection
3. CPlatelets that are larger than normal in size
4. DYoung red blood cells recently released from the bone marrow

A patient has started parenteral nutrition (PN) through a central line. Which test is monitored most frequently in the first days?

1. AThyroid hormones
2. BSerum lipase
3. CHemoglobin A1c
4. DBlood glucose

When should a blood specimen tube be labeled?

1. AAt the nurses' station, after all samples for the shift are drawn
2. BIn the laboratory, by the staff who receive the unlabeled sample
3. CAt the bedside, in the patient's presence, using two identifiers
4. DBefore entering the room, so tubes are ready for the next patients

A patient's potassium is 7,0 mEq/L. Which ECG change would the nurse expect?

1. ADelta waves before the QRS
2. BProminent U waves
3. CFlattened T waves
4. DTall, peaked T waves

A patient stopped long-term prednisone suddenly a week ago. Now: blood pressure 78/46 mm Hg, sodium 128 mEq/L, potassium 4,6 mEq/L, glucose 58 mg/dL (3,2 mmol/L). Which condition is most likely?

1. AAcute adrenal insufficiency (adrenal crisis)
2. BPrimary hyperaldosteronism (Conn syndrome)
3. CSyndrome of inappropriate ADH (SIADH)
4. DCushing syndrome from steroid excess

A patient taking an SGLT2 inhibitor has nausea and fast breathing. Glucose 190 mg/dL (10,5 mmol/L), pH 7,15, bicarbonate 10 mEq/L, blood ketones high. What is the most likely diagnosis?

1. AHyperosmolar hyperglycemic state
2. BEuglycemic diabetic ketoacidosis
3. CSimple fasting ketosis only
4. DRespiratory acidosis from COPD