Scheda di esercizi di Valori di laboratorio ed elettroliti con soluzioni

Quale risultato di laboratorio è più strettamente legato alla pelle e agli occhi gialli (ittero)?

1. ABilirubina sierica elevata
2. BCalcio sierico basso
3. CPotassio sierico elevato
4. DConta piastrinica bassa

Qual è un tipico intervallo di riferimento negli adulti per il calcio sierico totale?

1. ACirca 12–16 mg/dL (3,0–4,0 mmol/L)
2. BCirca 3,5–5,0 mg/dL (0,87–1,25 mmol/L)
3. CCirca 8,5–10,5 mg/dL (2,1–2,6 mmol/L)
4. DCirca 1,3–2,1 mg/dL (0,3–0,5 mmol/L)

A positive hepatitis B surface antigen (HBsAg) test means:

1. AThe person is immune from vaccination only
2. BThe person had hepatitis A in the past
3. CThe person currently has hepatitis B infection
4. DThe person has never met the virus

A blood sample drawn just after a patient ate a fatty meal is reported as "lipemic." What does this mean for the results?

1. AThe sample was contaminated by an IV fluid with dextrose
2. BThe sample shows the patient has diabetic ketoacidosis
3. CHigh fat in the sample may interfere with some test results
4. DThe results are more accurate than in a fasting sample

A patient without symptoms has a fasting plasma glucose of 132 mg/dL (7,3 mmol/L) on Monday and 138 mg/dL (7,7 mmol/L) on Thursday. What does this show?

1. AThe results meet the criteria for diabetes
2. BThe results show prediabetes only
3. CThe results show reactive hypoglycemia
4. DThe results are within the normal fasting range

A pregnant woman's blood type is O Rh-negative, and her antibody screen (indirect Coombs test) is negative. What is usually offered at about 28 weeks?

1. AAn IV dose of vitamin K given for the fetus
2. BDaily oral iron and folic acid supplements only
3. CA transfusion of group O Rh-positive red cells
4. DAnti-D immunoglobulin (Rho(D) immune globulin)

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. APrimary hyperaldosteronism (Conn syndrome)
2. BSyndrome of inappropriate ADH (SIADH)
3. CAcute adrenal insufficiency (adrenal crisis)
4. DCushing syndrome from steroid excess

A patient's results: sodium 140 mEq/L, chloride 100 mEq/L, bicarbonate 12 mEq/L. What is the anion gap, and what does it suggest?

1. A12 mEq/L, a normal anion gap
2. B28 mEq/L, a high anion gap
3. C40 mEq/L, a high anion gap
4. D52 mEq/L, a very high anion gap