Final answer:
The next step in treating this patient is Laparoscopic surgery.
Step-by-step explanation:
The next step in treating this patient is Laparoscopic surgery. The patient's symptoms, including severe abdominal pain in the right lower quadrant, accompanied by loss of appetite, nausea, vomiting, and a temperature of 101.3°F, are consistent with acute appendicitis. Laparoscopic surgery is the preferred treatment for appendicitis, as it allows for minimally invasive removal of the inflamed appendix.