Peer-reviewed veterinary case report
Doppler ultrasound shows gut blood flow changes in dogs with food
By Kircher, Patrick R et al.·Published in Journal of veterinary internal medicine·2004·Department of Clinical Veterinary Medicine·View original on PubMed →
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Original publication title: Doppler ultrasonographic evaluation of gastrointestinal hemodynamics in food hypersensitivities: a canine model.
- Species:
- dog
Plain-English summary
A group of dogs with food allergies underwent tests to see how their blood flow in the stomach changed after eating. The researchers used a special ultrasound to measure blood flow in the arteries before and after the dogs ate their regular food and then again after being fed different allergens. They found that the blood flow changed significantly after eating allergen-containing meals, even though the dogs didn't show any obvious signs of stomach problems. This study suggests that noninvasive ultrasound can help understand how food allergies affect dogs' digestive systems.
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Abstract
Chronic enteropathy due to food hypersensitivity is a common complaint in dogs and humans, and definitive diagnosis and identification of offending allergens remains challenging. Doppler waveform analysis of the celiac artery (CA) and the cranial mesenteric artery (CMA) of 8 dogs with proven food hypersensitivity was performed in the fasting state and at 20, 40, 60, and 90 minutes after feeding their regular daily diet, and at 2 and 4 days after feeding 4 different allergens. Resistive index (RI), pulsatility index (PI), and the percentage differences between these measurements were calculated and compared statistically. The maximal decrease in RI and PI after feeding the regular diet was reached at 40 minutes after ingestion in both vessels (CA: RI = -6%, PI = -23%; CMA: RI = -9%, PI = -30%). After this trough, the resistance in both vessels rose nearly to baseline after 90 minutes (CA: RI = -1%, PI = -13%; CMA: RI = -3%, PI = -14%). When fed an allergen-containing meal the percentage changes at the trough were significantly greater (CA: RI = -10%, PI = -32%; CMA: RI = - 14%, PI = -40 %; p < 0.05) compared to those seen after feeding the maintenance diet. Also, RI and PI values were significantly (P < .05) lower at 90 minutes on days 2 and 4 of the challenge period. During the challenge period, dogs did not show overt signs of gastrointestinal disease. Significant postprandial hemodynamic alterations in response to food allergens in dogs with food hypersensitivities can be shown noninvasively with Doppler ultrasound.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/15515573/