What is the primary role of ultrasound in the assessment of equine colic?

• A. It helps identify abdominal effusion, intestinal distension, and peritoneal structure abnormalities, guiding management.
• B. It primarily assesses cardiac function.
• C. It is only useful for diagnosing dental disease.
• D. It has no role in colic assessment.

Answer: (A)

Ultrasound in equine colic is used to visualize the abdominal in real time, helping distinguish likely surgical from non-surgical disease. It looks for free fluid in the peritoneal space, which can indicate leakage from a compromised bowel, peritonitis, or ischemia, and it assesses the intestines for distension, wall thickness, and motility. Distended, thick-walled loops or poor peristalsis raise concern for obstruction or strangulating lesions, while normal or only mildly affected loops may point toward non-surgical causes. You can also evaluate surrounding peritoneal structures for abnormalities that support a surgical plan. These findings together guide management decisions—whether to continue medical treatment with fluids and analgesia or to proceed to exploratory surgery. This role contrasts with cardiac assessment or dental disease, which ultrasound of the abdomen does not primarily address, and it’s not accurate to say it has no role in colic evaluation since abdominal ultrasound provides critical diagnostic information.