Scheda di esercizi di Valori di laboratorio ed elettroliti con soluzioni

What does a "culture and sensitivity" test of a sample show?

1. AWhether the patient is allergic to an antibiotic
2. BWhich organism grows and which antibiotics work on it
3. CThe amount of antibiotic in the patient's blood
4. DHow many white cells are present in the sample

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

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

What does the reticulocyte count measure?

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

A patient with sepsis has a lactate of 2,1 mmol/L on admission and 4,3 mmol/L two hours later, despite IV fluids. What does this suggest?

1. AA normal response to IV fluids in the first hours
2. BExpected muscle activity from shivering in fever
3. CImproving circulation as the fluids start to work
4. DWorsening tissue perfusion that needs urgent reporting

Un paziente con aritmia ventricolare mostra sul monitor un tracciato a torsione (torsione di punta, torsades de pointes). Quale elettrolita si somministra comunemente per via endovenosa come trattamento?

1. ASolfato di magnesio
2. BFosfato di potassio
3. CBicarbonato di sodio
4. DCarbonato di calcio

A stool test for Clostridioides difficile is ordered. Which sample is appropriate?

1. AAn unformed (liquid or soft) stool
2. BA rectal swab from a patient with constipation
3. CAny stool after a laxative dose
4. DA formed, hard stool sample

A patient with heavy alcohol use and a poor diet has a hemoglobin of 10,1 g/dL (101 g/L), an MCV of 110 fL and a low red cell folate. Which explanation fits best?

1. AThalassemia trait inherited from one of the parents
2. BIron deficiency from slow, chronic bleeding in the gut
3. CFolate deficiency, made worse by a direct alcohol effect
4. DAnemia caused by long-standing chronic kidney disease

Un paziente arriva 30 minuti dopo aver vomitato una grande quantità di sangue. La frequenza cardiaca è 125/min, ma la prima emoglobina è 13,0 g/dL (130 g/L). Perché l'emoglobina è fuorviante?

1. AL'esame non è mai accurato nelle situazioni di emergenza
2. BIl valore dimostra che non c'è un sanguinamento significativo
3. CSi perde sangue intero, perciò il livello cala solo dopo ore
4. DL'emoglobina aumenta durante il sanguinamento, nascondendo la perdita