The nurse inserts a gastric feeding tube into the client. Which method does the nurse use to verify placement of the client's feeding tube?
1. Gets a pH of 4 from feeding tube aspirate
2. Obtains a pH of 7.0 from gastric aspirate
3. Locates the tube distal to pyloric sphincter
4. Locates the tube above cardiac sphincter
1
1. The nurse inserts a gastric feeding tube and expects to confirm tube placement in the stomach; the nurse verifies gastric placement by measuring the pH of the aspirate and expects it to be 4 or less because hydrochloric acid from gastric parietal cells acidify gastric contents.
2. Feeding tube aspirate of 7.0 is most likely from the intestines.
3 and 4. A gastric feeding tube is proximal to the pyloric sphincter, the sphincter that controls gastric emptying into the duodenum, and is inferior to the cardiac sphincter, the sphincter between the esophagus and the stomach.
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