Immediate Treatment for Septic Shock Due to Cellulitis

Initial Resuscitation

Administer at least 30 mL/kg of IV crystalloid fluid within the first 3 hours of recognition of septic shock, and target a mean arterial pressure of 65 mmHg using vasopressors if fluid resuscitation is insufficient, as recommended by the Society of Critical Care Medicine 3, 4
Frequently reassess hemodynamic status through clinical examination and available physiologic variables (heart rate, blood pressure, arterial oxygen saturation, respiratory rate, temperature, urine output) 3

Initiate IV antimicrobials as soon as possible and within one hour of recognition of septic shock, according to the Infectious Diseases Society of America 1, 2, 4
Obtain appropriate cultures before starting antimicrobial therapy if this does not significantly delay administration (>45 minutes), as suggested by the Infectious Diseases Society of America 4
For cellulitis with septic shock, use empiric combination therapy with Vancomycin or another antimicrobial effective against MRSA, plus a broad-spectrum agent such as piperacillin-tazobactam or a carbapenem (imipenem/meropenem) to cover gram-negative pathogens, as recommended by the Infectious Diseases Society of America 5, 6

Evaluate for and perform source control measures within 12 hours of diagnosis if feasible, according to the Society of Critical Care Medicine 7, 8
For cellulitis with abscess, perform incision and drainage, as recommended by the Infectious Diseases Society of America 5, 6
Use the intervention associated with the least physiologic insult (e.g., percutaneous rather than surgical drainage of an abscess), as suggested by the Society of Critical Care Medicine 7

Reassess antimicrobial therapy daily for potential de-escalation, according to the Society of Critical Care Medicine 1, 2
De-escalate combination therapy within the first few days in response to clinical improvement, as recommended by the Society of Critical Care Medicine 9, 4
Narrow antimicrobial coverage once pathogen identification and sensitivities are established, according to the Infectious Diseases Society of America 2, 7
Continue antimicrobial therapy for 7-10 days for cellulitis with septic shock, as recommended by the Infectious Diseases Society of America 1, 9

Failure to obtain adequate source control can lead to persistent infection despite appropriate antimicrobial therapy, as noted by the Society of Critical Care Medicine 7, 8
Continuing broad-spectrum combination therapy beyond 3-5 days without de-escalation increases risk of antimicrobial resistance and adverse effects, according to the Society of Critical Care Medicine 1, 9