What primary concern should be addressed for Ernest Peterson during his visit?

The primary concern for Ernest Peterson during his visit should focus on suspected intestinal obstruction. This condition can lead to serious complications, including perforation of the intestine, sepsis, and significant electrolyte imbalances. The urgency in addressing a suspected intestinal blockage arises from the potential for a rapid deterioration of the patient's health if the obstruction is not resolved, which could result in severe abdominal pain, vomiting, and peritonitis.

In a clinical setting, recognizing the signs of an intestinal obstruction is critical for timely intervention, such as imaging studies to confirm the diagnosis and determine the appropriate treatment, which may include surgery or other methods to relieve the blockage. While hypertension, heart failure, and general body aches are important considerations, they do not pose the immediate, acute threat to life as an intestinal obstruction does, making it the primary focus during this emergency visit.