Soru

An obese male patient, aged $58$, with a $15$-year history of poorly controlled type $2$ diabetes mellitus, is evaluated in the emergency department for severe genital pain and progressive swelling that began $24$ hours ago. His temperature is $39.2^\circ\text{C}$ ($102.6^\circ\text{F}$), blood pressure is $90/60 \text{ mmHg}$, pulse is $118 \text{ /min}$, and respirations are $22 \text{ /min}$. Physical examination reveals marked erythema, edema, and induration of the perineum extending anteriorly to the scrotum. Palpation of the affected area elicits exquisite tenderness and a distinct crackling sensation beneath the skin. A small area of dark, necrotic-appearing tissue is visible on the right hemiscrotum, exuding a malodorous discharge. Aggressive intravenous fluid resuscitation is immediately initiated. Which of the following is the most appropriate next step in the management of this patient?