Scheda di esercizi di Valori di laboratorio ed elettroliti con soluzioni

In iron-deficiency anemia, the total iron-binding capacity (TIBC) is usually:

1. AHigh
2. BNormal
3. CLow
4. DAbsent

Quale test epatico aumenta soprattutto quando le cellule del fegato sono danneggiate?

1. AALT (alanina aminotransferasi)
2. BEmoglobina glicata (HbA1c)
3. CCreatinchinasi (CK)
4. DAzoto ureico ematico (BUN)

Which hormone is measured in blood or urine to test for pregnancy?

1. AAntidiuretic hormone (ADH)
2. BFollicle-stimulating hormone (FSH)
3. CHuman chorionic gonadotropin (hCG)
4. DThyroid-stimulating hormone (TSH)

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. CA common stress response to surgery that is monitored
4. DDefinite wound infection that needs antibiotics now

A week after a splenectomy, a patient's platelet count is 650 × 10³/µL. What is the best interpretation?

1. AA sign of iron overload from the surgery and transfusion
2. BAn expected rise after splenectomy that increases clot risk
3. CA laboratory error, because platelets fall after splenectomy
4. DA sign of new leukemia that needs immediate chemotherapy

A urine culture report states "mixed growth of three organisms, likely contamination." What is the nurse's best response?

1. ARecord the result as a confirmed urinary tract infection
2. BInform the provider and arrange a new, correctly collected sample
3. CDiscard the report, because a mixed growth is always normal
4. DStart treatment for all three organisms with three antibiotics

A patient with a serum albumin of 1,9 g/dL (19 g/L) has signs of phenytoin toxicity, although the total phenytoin level is in the usual range. What is the most likely explanation?

1. ALow albumin raises the free (active) fraction of phenytoin
2. BLow albumin stops phenytoin from crossing into the brain
3. CLow albumin makes the liver clear phenytoin much faster
4. DLow albumin makes the total level falsely high in all cases

A patient receiving parenteral nutrition with lipid emulsion has a triglyceride level of 620 mg/dL (7,0 mmol/L). Why is this result important?

1. AIt means the patient needs more lipid
2. BIt raises the risk of acute pancreatitis
3. CIt shows the nutrition is fully effective
4. DIt is a normal fasting value for adults