BOC Chemistry All possible Questions comprehensive exam with verified answers

BOC Chemistry All possible Questions

comprehensive exam with verified

answers


1.1. Following overnight fasting, hypoglycemia in non-diabetic
b b b b b b b




adults is de- fined as a glucose of:
b b b b b b b




a <70 mg/dL (<3.9 mmol/L)
b b b b




b <60 mg/dL (<3.3 mmol/L)
b b b b




c <55 mg/dL (<3.0 mmol/L)
b b b b




d <45 mg/dL (<2.5 mmol/L): d <45 mg/dL (<2.5 mmol/L)
b b b b b b b b b




d Diagnosis of hypoglycemia in adults.
b b b b b




2.2. The following results are from a 21-year-old patient with a back
b b b b b b b b b b b b




injury who appears otherwise healthy:
b b b b




whole blood glucose: 77 mg/dL
b b b b b




1b/ b
207

,(4.2 mmol/L) serum glucose: 88
b b b b b




mg/dL (4.8 mmol/L) b b




CSF glucose: 56 mg/dL (3.1 mmol/L)
b b b b b




The best interpretation of these results is that:
b b b b b b b




a the whole blood and serum values are expected but the CSF
b b b b b b b b b b b b




value is elevatedb b




b the whole blood glucose value should be higher than the serum
b b b b b b b b b b b b




value

c all values are consistent with a normal healthy individual
b b b b b b b b b




d the serum and whole blood values should be identical: c all
b b b b b b b b b b b b




values are consistent with a normal healthy individual
b b b b b b b




c Body fluid glucose reference ranges.
b b b b b




3.3. The preparation of a patient for standard glucose tolerance
b b b b b b b b b b




testing should include:
b b




a a high carbohydrate diet for 3 days
b b b b b b b




b a low carbohydrate diet for 3 days
b b b b b b b




c fasting for 48 hours prior to testing
b b b b b b b




2b/ b
207

,d bed rest for 3 days: a a high carbohydrate diet for 3 days
b b b b b b b b b b b b b




a GTT diet preparation.
b b b




4.4. If a fasting glucose was 90 mg/dL, which of the following 2-hr
b b b b b b b b b b b b b




postprandial glucose results would most closely represent normal
b b b b b b b b




glucose metabolism? b




a 55 mg/dL (3.0 mmol/L)
b b b b




b 100 mg/dL (5.5 mmol/L)
b b b b




c 180 mg/dL (9.9 mmol/L)
b b b b




d 260 mg/dL (14.3 mmol/L): b 100
b b b b b b b




mg/dL (5.5 mmol/L) b Normal 2-
b b b b b




hour postprandial value.
b b




5.5. A healthy person with a blood glucose of 80 mg/dL (4.4
b b b b b b b b b b b b




mmol/L) would have a simultaneously determined cerebrospinal
b b b b b b




b fluid glucose value of:
b b b




a 25 mg/dL (1.4 mmol/L)
b b b b




b 50 mg/dL (2.3 mmol/L)
b b b b




3b/ b
207

, c 100 mg/dL (5.5 mmol/L)
b b b b




d 150 mg/dL (8.3 mmol/L): b 50 mg/dL (2.3 mmol/L)
b b b b b b b b b




b Ratio of CSF glucose to blood glucose
b b b b b b b




6.6. A 25-year-old man became nauseated and vomited 90
b b b b b b b b b




minutes after receiving a standard 75 g carbohydrate dose for
b b b b b b b b b b




an oral glucose tolerance test. The best course of action is to.
b b b b b b b b b b b




a give the patient a glass of orange juice and continue the test
b b b b b b b b b b b b




b start the test over immediately with a 50 g carbohydrate dose
b b b b b b b b b b b




c draw blood for glucose and discontinue test
b b b b b b b




d place the patient in a recumbent position, reassure him and
b b b b b b b b b b b




continue the test: c draw blood for glucose and discontinue
b b b b b b b b b b




test


c Use of partial GTT information.
b b b b b




7.7. Cerebrospinal fluid for glucose assay should be:
b b b b b b b




a refrigerated
b




b analyzed immediately
b b




c heated to 56°C
b b b




4b/ b
207