Effect of percutaneous endoscopic gastrostomy on gastric emptying in clinically normal cats

Stephanie A. Smith From the Department of Clinical Sciences, College of Veterinary Medicine (Smith, Ludlow, Hoskinson, Goggin) and Department of Statistics (Butine), Kansas State University, Manhattan, KS 66506.

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Chris. L. Ludlow From the Department of Clinical Sciences, College of Veterinary Medicine (Smith, Ludlow, Hoskinson, Goggin) and Department of Statistics (Butine), Kansas State University, Manhattan, KS 66506.

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James J. Hoskinson From the Department of Clinical Sciences, College of Veterinary Medicine (Smith, Ludlow, Hoskinson, Goggin) and Department of Statistics (Butine), Kansas State University, Manhattan, KS 66506.

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Michael D. Butine From the Department of Clinical Sciences, College of Veterinary Medicine (Smith, Ludlow, Hoskinson, Goggin) and Department of Statistics (Butine), Kansas State University, Manhattan, KS 66506.

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Justin M. Goggin From the Department of Clinical Sciences, College of Veterinary Medicine (Smith, Ludlow, Hoskinson, Goggin) and Department of Statistics (Butine), Kansas State University, Manhattan, KS 66506.

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Abstract

Objective

To assess the effect of percutaneous endoscopic gastrostomy (PEG) tube placement on gastric emptying in clinically normal cats.

Animals

8 healthy adult 3- to 5-year-old cats.

Procedure

Cats were accommodated to the diet for 2 weeks prior to scintigraphy. Caloric needs were divided into 3 feedings/d. Food was withheld for 24 hours after tube placement, then was fed as a third of the caloric needs on day 1, two-thirds on day 2, and full caloric requirements thereafter. Gastric emptying was measured via nuclear scintigraphy. Labeled meals contained 111 MBq (3 mCi) of 99mTc-labeled disofenin. Sixty-second ventral scintigraphic images were acquired immediately, every 20 minutes for the first hour, then every 30 minutes for 4 hours after feeding. Each cat was evaluated 3 times prior to PEG tube placement. Cats were anesthetized, and 16-F mushroom-tipped Pezzar gastrostomy tubes were placed, using a video endoscope. Scintigraphy was repeated on days 1, 4, 7, 11, 14, and 21 after PEG tube placement.

Results

Gastric emptying was faster with a PEG tube in place. Percentage of retained gastric activity was significantly lower after PEG for 150, 180, 210, and 240 minutes versus time before PEG tube placement.

Conclusion

Placement of a PEG tube does not delay gastric emptying in clinically normal cats.

Clinical Relevance

Gastric retention of food, vomiting, and aspiration pneumonia after PEG tube placement may not be related to delayed gastric emptying. (Am J Vet Res 1998;59:1414–1416)

Abstract

Objective

To assess the effect of percutaneous endoscopic gastrostomy (PEG) tube placement on gastric emptying in clinically normal cats.

Animals

8 healthy adult 3- to 5-year-old cats.

Procedure

Cats were accommodated to the diet for 2 weeks prior to scintigraphy. Caloric needs were divided into 3 feedings/d. Food was withheld for 24 hours after tube placement, then was fed as a third of the caloric needs on day 1, two-thirds on day 2, and full caloric requirements thereafter. Gastric emptying was measured via nuclear scintigraphy. Labeled meals contained 111 MBq (3 mCi) of 99mTc-labeled disofenin. Sixty-second ventral scintigraphic images were acquired immediately, every 20 minutes for the first hour, then every 30 minutes for 4 hours after feeding. Each cat was evaluated 3 times prior to PEG tube placement. Cats were anesthetized, and 16-F mushroom-tipped Pezzar gastrostomy tubes were placed, using a video endoscope. Scintigraphy was repeated on days 1, 4, 7, 11, 14, and 21 after PEG tube placement.

Results

Gastric emptying was faster with a PEG tube in place. Percentage of retained gastric activity was significantly lower after PEG for 150, 180, 210, and 240 minutes versus time before PEG tube placement.

Conclusion

Placement of a PEG tube does not delay gastric emptying in clinically normal cats.

Clinical Relevance

Gastric retention of food, vomiting, and aspiration pneumonia after PEG tube placement may not be related to delayed gastric emptying. (Am J Vet Res 1998;59:1414–1416)

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