magnesium sulphate psyllium radiographic area sand enteropathy colic
Background
Sand enteropathy is a common disease in horses worldwide. The presence of sand does not always cause disease. The amount of sand required to cause clinical disease is not well established.
Objectives
To establish a weight-indexed cut-off for the diagnosis of clinically relevant sand enteropathy based on radiographic area.
Study design
Cross-sectional.
Methods
Abdominal radiographs were acquired from clinically normal horses and compared with horses with clinical sand enteropathy. Sand area and sand area per kilogram of body weight were calculated. A receiver operating characteristic (ROC) curve was used to differentiate groups.
Results
Seventy clinically normal horses and 57 sand enteropathy cases were included. Median sand area in control horses was 1 cm2 per 100 kg (interquartile range 0–6 cm2 per 100 kg), and in sand enteropathy horses was 118 cm2 per 100 kg (interquartile range 83–180 cm2 per 100 kg). Receiver operator characteristic (ROC) analysis revealed that using a cut-off of 21 cm2 per 100 kg had a sensitivity of 98.25% (CI 90.71%–99.1%) and a specificity of 92.54% (CI 83.69%–96.77%) for a diagnosis of clinical sand enteropathy.
Conclusions
A weight-based cut-off of >21 cm2 per 100 kg for the diagnosis of sand enteropathy was determined with excellent sensitivity and good specificity. This may aid in determining if the amount of sand accumulation in a horse is of clinical consequence.
Details
Title
Radiographic area of large intestinal sand accumulation in horses may determine clinical significance
Authors/Creators
I G Entwisle - Murdoch University
D P Byrne - Murdoch University, School of Veterinary Medicine
G D Lester - Murdoch University, School of Veterinary Medicine
E J McConnell - Murdoch University, School of Veterinary Medicine
Publication Details
Australian veterinary journal, Early View
Publisher
John Wiley & Sons Australia, Ltd on behalf of Australian Veterinary Association.