Question

Paramedics transport an elderly female resident of an assisted living facility to the acute care unit. Staff at the facility reported she had been complaining of unremitting abdominal discomfort and had vomited several times over the prior half-day. She is $72$ years old. Her documented medical history is significant for chronic hypertension, paroxysmal atrial fibrillation, and a history of an open cholecystectomy a decade ago. Vital signs upon triage show a temperature of $38.6^\circ\text{C}$ ($101.5^\circ\text{F}$), a blood pressure of $85/50\text{ mm Hg}$, a heart rate of $128/\text{min}$, and a respiratory rate of $24/\text{min}$. Her abdomen is markedly distended. Palpation elicits diffuse guarding and rebound tenderness across all quadrants. Auscultation reveals a silent abdomen. Close inspection of the right lower quadrant demonstrates a prominent, non-reducible mass adjacent to her prior surgical scar. The skin overlying the mass is notably erythematous, warm to the touch, and exquisitely painful upon minimal contact. Which of the following interventions are indicated for this patient? (Select all that apply)