Scheda di esercizi di Valori di laboratorio ed elettroliti con soluzioni

A low mean corpuscular volume (MCV) means that:

1. AThe red cells contain more hemoglobin than normal
2. BThe red cells are larger than normal (macrocytic)
3. CThe red cells are smaller than normal (microcytic)
4. DThe bone marrow is making too many white cells

Quale valore di HbA1c soddisfa la soglia diagnostica usuale per il diabete?

1. A5,0% (31 mmol/mol) o superiore
2. B5,5% (37 mmol/mol) o superiore
3. C4,5% (26 mmol/mol) o superiore
4. D6,5% (48 mmol/mol) o superiore

A tuberculin skin test (TST) is read as positive. What does this mean?

1. AThe person is fully immune and can never develop TB
2. BThe person definitely has active, contagious pulmonary TB
3. CThe person has been infected with TB bacteria at some point
4. DThe person has never been exposed to TB bacteria

A patient on hemodialysis has an arteriovenous (AV) fistula in the left arm. Where should the nurse draw routine blood samples?

1. AFrom the fistula
2. BFrom the left hand
3. CFrom the right arm
4. DFrom the left wrist

A patient with hepatic encephalopathy is receiving lactulose. Which finding best shows that the treatment is effective?

1. ASix to eight watery stools a day with dizziness
2. BTwo to three soft stools a day and clearer thinking
3. CA rising serum ammonia with a slower flapping tremor
4. DNo bowel movement for 2 days and calm sleep

Un paziente che vomita da due giorni ha un BUN di 32 mg/dL (urea 11,4 mmol/L) e una creatinina normale. Qual è la causa più probabile?

1. AInsufficienza epatica
2. BIperidratazione
3. CDisidratazione
4. DDieta povera di proteine

A 68-year-old man has fatigue, a hemoglobin of 9,8 g/dL (98 g/L), an MCV of 72 fL and a low ferritin. He eats a normal diet. What is the most important next step?

1. ARepeat the blood count in one year
2. BStart vitamin B₁₂ injections
3. CGive iron and do no further tests at all
4. DLook for a source of blood loss in the gut

A patient on long-term amiodarone has fatigue and weight gain. TSH is 11 mIU/L and the free T₄ is low. What is the most likely explanation?

1. AA normal response to amiodarone needing no action
2. BAmiodarone-induced hyperthyroidism
3. CAmiodarone-induced hypothyroidism
4. DSecondary hypothyroidism from pituitary failure