Evidence‑Based Management of Septic Shock
Immediate Antimicrobial Therapy
- Administer intravenous broad‑spectrum antimicrobials within the first hour of recognizing septic shock to cover likely bacterial pathogens and possible fungal or viral organisms. 1, 2, 3, 4
- Obtain at least two sets of aerobic and anaerobic blood cultures before starting antibiotics, but do not delay antimicrobial delivery if culture collection takes more than a few minutes. 1, 2, 5
- For suspected Pseudomonas or multidrug‑resistant organisms, initiate empiric combination therapy using two agents from different antibiotic classes. 2, 3, 4
Fluid Resuscitation
- Deliver a minimum of 30 mL/kg of intravenous crystalloid fluid within the first 3 hours for patients with sepsis‑induced hypoperfusion. 1, 2
- Choose either normal saline or balanced crystalloids as the initial fluid of choice. 6, 7
- Continue fluid administration while hemodynamic parameters (blood pressure, heart rate, mental status, capillary refill) are improving. 2, 6, 7
- Add albumin when large volumes of crystalloids are required to maintain intravascular volume. 6, 7
- Never use hydroxyethyl starches for resuscitation. 6, 7
Vasopressor Management
- Initiate norepinephrine as the first‑line vasopressor, targeting a mean arterial pressure (MAP) of 65 mm Hg. 2, 6, 8
- If the MAP target is not achieved with norepinephrine alone, add vasopressin at 0.03 units/min as the second agent. 6, 8
- If hypotension persists despite norepinephrine and vasopressin, add epinephrine. 6, 8
- Dopamine should not be used as a first‑line vasopressor; norepinephrine provides superior outcomes. 8
Hemodynamic Monitoring & Reassessment
- Prefer dynamic variables (e.g., pulse‑pressure variation, stroke‑volume variation) over static measures to predict fluid responsiveness when available. 1, 2
- Aim for lactate normalization as an indicator of adequate tissue perfusion. 1, 2
- Perform frequent hemodynamic reassessments to guide further fluid administration and vasopressor titration. 1, 2
Source Control
- Rapidly identify or exclude anatomic infection sources that require emergent intervention. 6, 7, 8
- Implement source‑control procedures (e.g., drainage, debridement) as soon as medically and logistically feasible after diagnosis. 6, 7, 8
- Promptly remove intravascular access devices that may be the infection source, after establishing alternative vascular access. 6, 7, 8
- Favor the least physiologically invasive intervention for source control (e.g., percutaneous over surgical drainage). 6, 7, 8
Antimicrobial Optimization (Days 1‑3)
De‑escalation Strategy
- Reassess the antimicrobial regimen daily to identify opportunities for de‑escalation. 3, 4, 9
- Narrow therapy once the causative pathogen and its susceptibilities are known or when clear clinical improvement is evident. 1, 3, 4
- Discontinue empiric combination therapy within the first few days if the patient shows clinical improvement. 2, 3, 4
- Use procalcitonin levels to support discontinuation of empiric antibiotics in patients with limited clinical evidence of infection. 7, 9