Gastric Analysis and Gastric Acid Stimulation Test
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To evaluate gastric fluid and the amount of gastric acid secreted toward diagnosing gastrointestinal disorders such as ulcers, cancers, and inflammation.
There are no activity restrictions unless by medical direction. Instruct the patient to fast from food after the evening meal the night before the test and not to drink water for 1 hr before the test. Instruct the patient to refrain from the use of chewing gum or tobacco products for at least 12 hr prior to and for the duration of the test. Drugs and substances that may alter gastric secretions (e.g., alcohol, histamine, nicotine, adrenocorticotropic steroids, insulin, parasympathetic drugs, belladonna alkaloids, anticholinergic drugs, histamine receptor antagonists) should be restricted by medical direction for 72 hr before the test. Protocols may vary among facilities.
Method: Volume measurement and pH by ion-selective electrode.
|Basal acid output (BAO)||Male: 0–10.5 mmol/hr|
|Female: 0–5.6 mmol/hr|
|Peak acid output (PAO)||Male: 12–60 mmol/hr|
|Female: 8–40 mmol/hr|
|Peak response time||Pentagastrin, intramuscular: 15–45 min|
|Pentagastrin, subcutaneous: 10–30 min|
|BAO/PAO ratio||Less than 0.2|
Critical Findings and Potential Interventions
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Bladh, Mickey Lynn., and Anne M. Van Leeuwen. "Gastric Analysis and Gastric Acid Stimulation Test." Davis's Lab & Diagnostic Tests, 7th ed., F.A. Davis Company, 2017. Nursing Central, nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425423/all/Gastric_Analysis_and_Gastric_Acid_Stimulation_Test.
Bladh ML, Van Leeuwen AM. Gastric Analysis and Gastric Acid Stimulation Test. Davis's Lab & Diagnostic Tests. 7th ed. F.A. Davis Company; 2017. https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425423/all/Gastric_Analysis_and_Gastric_Acid_Stimulation_Test. Accessed October 15, 2019.
Bladh, M. L., & Van Leeuwen, A. M. (2017). Gastric Analysis and Gastric Acid Stimulation Test. In Davis's Lab & Diagnostic Tests. Available from https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425423/all/Gastric_Analysis_and_Gastric_Acid_Stimulation_Test
Bladh ML, Van Leeuwen AM. Gastric Analysis and Gastric Acid Stimulation Test [Internet]. In: Davis's Lab & Diagnostic Tests. F.A. Davis Company; 2017. [cited 2019 October 15]. Available from: https://nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425423/all/Gastric_Analysis_and_Gastric_Acid_Stimulation_Test.
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