Lembaran kerja Nilai makmal & elektrolit dengan jawapan

Why is serum creatinine a better marker of kidney function than BUN?

1. AIt is made by the liver, so it rises in every kind of illness
2. BIt is not filtered by the kidneys, so its level stays very stable
3. CIt is less affected by diet, hydration and bleeding in the gut
4. DIt is affected mainly by protein intake, which is easy to control

At what time of day is serum cortisol normally highest?

1. AAround midnight
2. BLate afternoon
3. CAfter the evening meal
4. DEarly morning

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

An older adult with chronic kidney disease takes glyburide (glibenclamide, a sulfonylurea) and has repeated low glucose readings. Why is this a concern?

1. AThe drug stops working entirely when the kidneys fail
2. BThe drug and its metabolites build up and cause long lows
3. CThe drug makes the glucose meter read falsely low
4. DThe drug causes high potassium that lowers the glucose

A breathless patient in the emergency department has a BNP below 100 pg/mL. What does this suggest?

1. ASevere heart failure is certainly the cause of the problem
2. BHeart failure is an unlikely cause of the breathlessness
3. CThe patient has had a myocardial infarction in the past day
4. DThe kidneys are failing and the patient needs dialysis

A patient with central diabetes insipidus starts desmopressin. Which laboratory result is most important to monitor for an adverse effect?

1. ASerum sodium, which may fall too low
2. BSerum calcium, which may rise too high
3. CSerum potassium, which may rise too high
4. DSerum glucose, which may rise very high

A patient receiving chemotherapy has a white cell count of 1.8 × 10³/µL with 20% neutrophils and 5% bands. What is the absolute neutrophil count (ANC)?

1. A4,500/µL
2. B1,800/µL
3. C360/µL
4. D450/µL

A health care worker's hepatitis B tests show: HBsAg negative, anti-HBs positive, anti-HBc positive. What does this mean?

1. APast infection that has resolved, with immunity
2. BImmunity from vaccination only, never infected
3. CCurrent chronic hepatitis B infection
4. DNot immune and never exposed to the virus