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MLT Chemistry BOC Exam Questions and Answers All Correct

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MLT Chemistry BOC Exam Questions and Answers All Correct An emphysema patient suffering from fluid accumulation in the alveolar spaces is likely to be in what metabolic state? - Answer-respiratory acidosis At blood pH 7.40, what is the ratio of bicarbonate to carbonic acid? - Answer-20:1 ...

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  • September 6, 2024
  • 17
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • MLT Chemistry BOC
  • MLT Chemistry BOC
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MLT Chemistry BOC Exam Questions
and Answers All Correct
An emphysema patient suffering from fluid accumulation in the alveolar spaces is likely
to be in what metabolic state? - Answer-respiratory acidosis

At blood pH 7.40, what is the ratio of bicarbonate to carbonic acid? - Answer-20:1

The reference range for the pH of arterial blood measured at 37C is? - Answer-7.35-
7.45

A 68-year-old man arrives in the emergency room with a glucose level of 722mg/dL and
serum acetone of 4+ undiluted. An arterial blood gas from this patient is likely to be? -
Answer-low pH

A patient is admitted to the emergency room in a state of metabolic alkalosis. Which of
the following would be consistent with this diagnosis? - Answer-high TCO3, increase
HCO3

A sweat chloride result of 55mEq/L and a sweat sodium of 52mEq/L were obtained on a
patient who has a history of respiratory problems. The best interpretation of these
results is? - Answer-borderline results, the test should be repeated

The solute that contributes the most to the total serum osmolality is? - Answer-sodium

A potassium level of 6.8mEq/L is obtained. Before reporting the results, the first step the
technologist should take is to? - Answer-check the serum for hemolysis

Which of the following electrolytes is the chief plasma cation whose main function is
maintaining osmotic pressure? - Answer-sodium

In respiratory acidosis, a compensatory mechanism is the increase in? - Answer-plasma
bicarbonate concentration

The buffering capacity of blood is maintained by a reversible exchange process
between bicarbonate and? - Answer-chloride

The anion gap is useful for quality control of laboratory results for? - Answer-sodium,
potassium, chloride, and TCO2

Serum "anion gap" is increased in patients with? - Answer-lactic acidosis

,Most of the carbon dioxide present in blood is in the form of? - Answer-bicarbonate ion

A patient with myeloproliferative disorder has the following values:
Hgb- 13g/dL
Hct- 38%
WBC- 30x10^3/uL
Platelets- 1000x10^3/uL
Serum Na- 140mEq/L
Serum K- 7mEq/L
The serum K should be confirmed by? - Answer-testing heparinized plasma

What battery of tests is most useful in evaluating an anion gap of 22mEq/L? - Answer-
BUN, Creatinine, Salicylate, and Methanol

Quantitation of Na and K by ion-selective electrode is the standard method because? -
Answer-of advances in electrochemistry

The most important buffer pair in plasma is the? - Answer-bicarbonate/carbonic acid
pair

Osmolal gap is the difference between? - Answer-calculated and measured osmolality
values

The degree to which the kidney concentrates the glomerular filtration rate can be
determined by? - Answer-urine to serum osmolality ratio

A patient had the following serum results:
Na- 140mEq/L
K- 4.0mEq/L
Glucose- 95mg/dL
BUN- 10mg/dL
Which osmolality is consistent with these results? - Answer-270

Select the test which evaluates renal tubular function? - Answer-osmolarity

The following laboratory results were obtained:
Serum Electrolytes:
Na- 136mEq/L
K- 4.4mEq/L
Cl- 92mEq/L
HCO3- 40mEq/L
Arterial Blood:
pH- 7.32
PCO2- 79mm/Hg
These results are most compatible with? - Answer-respiratory acidosis

, A blood gas sample was sent to the lab on ice, and a bubble was present in the syringe.
The blood had been exposed to room air for at least 30 minutes. The following change
in blood gases will occur? - Answer-PO2 increased/ HCO3 decreased

Acidosis and alkalosis are best defined as fluctuations in blood pH and CO2 content
due to changes in? - Answer-bicarbonate buffer

A common cause of respiratory alkalosis is? - Answer-hyperventilation

Respiratory acidosis is described as a(n)? - Answer-increase in CO2 content and PCO2
with a decreased pH

Metabolic acidosis can be described as a(n)? - Answer-decrease in CO2 content and
PCO2 with a decreased pH

A person suspected of having metabolic alkalosis would have which of the following
laboratory findings? - Answer-CO2 content and pH elevated
Following overnight fasting, hypoglycemia in adults is defined as a glucose of? -
Answer-less than or equal to 45mg/dL

The following results are from a 21-year-old patient with a back injury who appears
otherwise healthy:
Whole blood glucose - 77mg/dL
Serum glucose - 88mg/dL
CSF glucose - 56mg/dL
The best interpretation of these results is that? - Answer-all values are consistent with a
normal healthy individual

The preparation of a patient for standard glucose tolerance testing should include? -
Answer-a high carbohydrate diet for 3 days

If a fasting glucose was 90mg/dL, which of the following 2-hour postprandial glucose
results would most closely represent normal glucose metabolism? - Answer-100mg/dL

A healthy person with a blood glucose of 80mg/dL would have a simultaneously
determined CSF glucose value of? - Answer-50mg/dL

A 25 year old man became nauseated and vomited 90 minutes after receiving a
standard 75g carbohydrate dose for an oral glucose tolerance test. The best course of
action is to? - Answer-draw blood for glucose and discontinue test

CSF for glucose assay should be? - Answer-analyzed immediately

Which of the following 2 hour postprandial glucose values demonstrates unequivocal
hyperglycemia diagnostic for diabetes mellitus? - Answer-200mg/dL

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