You are a doctor of the emergency ward at Children's University Hospital where a 15-year-old boy, Ondra Nový arrives accompanied by his parents. You take history (see help) and perform a physical examination. The patient is conscious and communicating. He complains of having abdominal pain for several days. He localizes the pain mainly to the area of the right hypogastrium. The mother states, that her son suffers from nausea, diarrhea, and has fever above 38°C for about 3 days without response to analgesics. The patient is sweaty, hypotensive, tachypneic. He has tachycardia and mottled skin.

How would you proceed?
22 /min
130 /min
90/70 (77) mmHg
temperature: 38,2°C
capillary return: 5s