Which symptom is NOT typically associated with gastrointestinal blast injuries?

The correct answer is C, fever, as it is not typically one of the primary symptoms associated with gastrointestinal blast injuries. In the context of blast injuries, the most common manifestations are directly related to damage caused to the gastrointestinal tract.

Intense abdominal pain and nausea and vomiting are expected symptoms due to the trauma inflicted on the organs involved; they are indicative of the extensive damage and irritation occurring within the digestive system. Perforation of the colon, a severe outcome of blast injuries, would lead to further complications such as peritonitis and sepsis, which align closely with the expected clinical picture of such trauma.

Fever may occur later in the course of treatment, often as a result of secondary infections or inflammatory responses, but it is not an immediate symptom that directly indicates a gastrointestinal blast injury. Thus, recognizing the direct symptoms of such traumatic events is crucial for timely diagnosis and intervention.