Imagery Flashcards
Which of the following findings on sonographic evaluation of horses with colic has both a sensitivity of 87.5% and a specificity of 87.5%?
A) Detection of nephrosplenic ligament entrapment by visualizing gas echoes obscuring the spleen.
B) Identification of right dorsal displacement or large colon volvulus through the visualization of colonic mesenteric vessels.
C) Sonographic detection of small intestinal distention for diagnosing small intestinal strangulation.
D) Detection of sand accumulations in the colon using sonography.
Correct Answer: D
Justification:
Option A is incorrect because nephrosplenic ligament entrapment diagnosis involves gas echoes obscuring the spleen, but the sensitivity and specificity for this finding aren’t specifically mentioned at 87.5%.
Option B is incorrect because the visualization of colonic mesenteric vessels for right dorsal displacement or volvulus has a sensitivity of 67.7% and a specificity of 97.9%.
Option C is incorrect because the sensitivity for detecting small intestinal strangulation using distended small intestine is 73-76%, not 87.5%.
Option D is correct because sonography for detecting sand accumulations in horses has both a sensitivity and specificity of 87.5%.
Abdominal Sonographic Evaluation. Vet clinic 2023
