Lab values & electrolytes worksheet with answers

In a person with HIV infection, a CD4 count below which level defines AIDS?

1. A50 cells/µL
2. B200 cells/µL
3. C1,000 cells/µL
4. D500 cells/µL

Which is the main cation in the fluid inside the cells?

1. AChloride
2. BPotassium
3. CCalcium
4. DSodium

The sweat chloride test is used to diagnose which condition?

1. ASickle cell disease
2. BHypothyroidism
3. CDiabetes mellitus
4. DCystic fibrosis

A patient on peritoneal dialysis notices that the drained fluid is cloudy and has abdominal pain. What should the nurse do?

1. AAdd more glucose to the next bag to clear the fluid
2. BRecord it as normal and continue the usual exchanges
3. CStop dialysis for a week and recheck the fluid later
4. DSend the fluid for cell count and culture and report it

A patient with sickle cell disease takes hydroxyurea. Which laboratory test is monitored regularly for an adverse effect?

1. ASerum amylase level
2. BUrine ketone level
3. CSerum lithium level
4. DComplete blood count

A woman who is 30 weeks pregnant has a new blood pressure of 152/98 mm Hg. Which urine finding would most support preeclampsia?

1. AKetones in the urine
2. BProtein in the urine
3. CNitrites in the urine
4. DGlucose in the urine

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

A patient in diabetic ketoacidosis has a potassium of 3.0 mEq/L before the insulin infusion is started. What should the nurse expect?

1. APotassium is replaced first, and insulin waits until the level is safe per protocol
2. BFluids are stopped until the potassium is normal
3. CInsulin is started at once at a higher rate
4. DPotassium is not replaced, because insulin will raise it