Friday, December 21, 2012

Grapes good for people, bad for pets...


Toxicology Grape and Raisin Toxicosis in Dogs

The American Society for the Prevention of Cruelty to Animals’ Animal Poison Control Center (APCC) reports a trend in dogs that have ingested grapes or raisins. Almost all of them develop acute renal failure (ARF). 

The source of the fruits did not seem to matter (whether store-bought or home-grown), and the suspected grapes and raisins tested negative for pesticides, fertilizers or antifungals. Ingested amounts ranged from over 1 pound of grapes to a single human serving size of raisins. 

Clinical signs include vomiting a few hours after ingestion, anorexia, diarrhea, lethargy and abdominal pain that can last from days to weeks. Blood panels frequently show hypercalcemia, elevated blood urea nitrogen, creatinine and phosphorous, which increase from 24 hours to days after ingestion. Oliguria and anuria (leading to death) are possible sequelae.

Treatment protocol: the exact mechanism of renal failure is unknown. Prevention of ARF can be achieved if treated early enough. APCC recommends inducing vomiting and administering activated charcoal in recent ingestions. Give intravenous fluids for 48 hours minimum and monitor blood chemistries daily. If blood work is normal after 72 hours, it is unlikely that renal failure will occur. If renal failure has occurred, fluids must be continued and other medications should be used to stimulate urine production. Some dogs may require peritoneal dialysis.

If you suspect your pet has ingested grapes or raisin, please contact your veterinarian.

Source:  Means, C: The Wrath of Grapes (from VIN) per:  22(2); 2002.


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