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Patients undergoing gastroscopy will undergo two pre-procedure ultrasound scans of the stomach, once on arrival in the unit and on an empty stomach and a second time after consumption of a randomized amount of apple juice (0, 50, 100, 200, 300 or 400 mL). Immediately after ingestion and the second ultrasound scan, subjects will have their gastroscopy which will start by suctioning out the apple juice. Measurements of stomach fluid volume conducted by ultrasound will be compared to the actual volume removed during the gastroscopy procedure.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Zero volume | Placebo Comparator | Patients will not ingest any apple juice prior to the second ultrasound. |
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| 50 mL | Experimental | Patients will ingest 50 mL apple juice prior to the second ultrasound. |
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| 100 mL | Experimental | Patients will ingest 100 mL apple juice prior to the second ultrasound. |
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| 200 mL | Experimental | Patients will ingest 100 mL apple juice prior to the second ultrasound. |
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| 300 mL | Experimental | Patients will ingest 300 mL apple juice prior to the second ultrasound. |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Ultrasound examination followed by ingestion of Apple Juice prior to a second ultrasound procedure, followed by gastroscopic suctioning of stomach content. | Other | Ultrasound scan of the stomach followed by ingestion of 0, 50, 100, 200, 300, or 400 mL of apple juice, followed by second ultrasound scan of the stomach, followed by gastroscopic suctioning of stomach content. |
| Measure | Description | Time Frame |
|---|---|---|
| Stomach volume | Fluid volume in the stomach after ingestion of apple juice will be compared between measurements done with ultrasound vs direct suctioning of fluid from the stomach. | 1 hour |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Anahi Perlas, MD | University Health Network, Toronto | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Toronto Western Hospital | Toronto | Ontario | M5T 2S8 | Canada |
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| 400 mL | Experimental | Patients will ingest 400 mL apple juice prior to the second ultrasound. |
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