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Gastrointestinal Tract Anatomy and Function

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Gastrointestinal Tract Anatomy and Function

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Questions and Answers

What is the primary purpose of administering gastrin in the gastric hyperacidity and anacidity procedure?

To calculate the BAO/PAO ratio

To stimulate maximal acid secretion (correct)

To measure the basal acid output

To determine the pH of the gastric specimen

What is the unit of measurement for free acid output in the gastric hyperacidity and anacidity procedure?

mmol/h (correct)

mol/L

How is the maximal acid output (MAO) defined in the gastric hyperacidity and anacidity procedure?

As the average of the first 4 post-stimulation collected samples

As the sum of the peak acid outputs

As the highest free acid output value of all 6 samples

As the total acid secretion for the period of 60 minutes after administration of a gastric stimulant (correct)

What is the purpose of the Schilling test in the diagnosis of pernicious anemia?

To assess Vitamin B12 absorption Signup and view all the answers

What is the formula to calculate the free HCl (mM) in the gastric hyperacidity and anacidity procedure?

VNaOH (mL) x [NaOH] (mol/L) x 1000 / V Gastric specimen titrated (ml) Signup and view all the answers

What is the primary cause of Vitamin B12 malabsorption in pernicious anemia?

Intrinsic factor (IF) deficiency Signup and view all the answers

What is the duration of the collection period in the gastric hyperacidity and anacidity procedure?

60 minutes Signup and view all the answers

How is the peak acid output (PAO) calculated in the gastric hyperacidity and anacidity procedure?

As the average of the highest TWO free acid output values Signup and view all the answers

What is the purpose of titration with 0.1 N NaOH in the determination of free HCl?

To neutralize the free HCl up to pH 3.5 Signup and view all the answers

What is the formula to calculate the free acid output (mmol/h) in the gastric hyperacidity and anacidity procedure?

mmol free acid/L x sample volume (L) x BAO/PAO ratio Signup and view all the answers