Sepsis Management in Anesthesia
Initial Recognition and Assessment
- The American College of Critical Care Medicine recommends implementing routine screening of potentially infected seriously ill patients to increase early identification of sepsis, and measuring serum lactate levels as a marker of tissue hypoperfusion 1
- Obtain at least two sets of blood cultures before starting antimicrobial therapy, as long as this doesn't delay treatment >45 minutes, as suggested by the Critical Care Medicine guidelines 2, 3
- Perform imaging studies promptly to confirm potential sources of infection, according to the Critical Care Medicine guidelines 3
Immediate Resuscitation (First 6 Hours)
- Administer intravenous antimicrobials within one hour of recognizing septic shock and severe sepsis, as recommended by the Critical Care Medicine guidelines 3, 4
- Initial fluid resuscitation with 30 mL/kg of crystalloid for hypotension or lactate ≥4 mmol/L, as suggested by the Critical Care Medicine guidelines 3
- Target the following parameters during the first 6 hours: Central venous pressure 8-12 mmHg, Mean arterial pressure (MAP) ≥65 mmHg, Urine output ≥0.5 mL/kg/hr, Central venous oxygen saturation ≥70% or mixed venous oxygen saturation ≥65%, according to the Critical Care Medicine guidelines 4
- In patients with elevated lactate levels, target resuscitation to normalize lactate as rapidly as possible, as recommended by the Critical Care Medicine guidelines 4
Hemodynamic Support
- Use norepinephrine as the first-choice vasopressor to maintain mean arterial pressure ≥65 mmHg, as suggested by the Critical Care Medicine guidelines 2
- Consider epinephrine when an additional agent is needed to maintain adequate blood pressure, according to the Critical Care Medicine guidelines 2
- Vasopressin (0.03 U/min) can be added to norepinephrine to either raise MAP to target or decrease norepinephrine dose, as recommended by the Critical Care Medicine guidelines 2
- Avoid dopamine except in highly selected circumstances, as suggested by the Critical Care Medicine guidelines 2
- Consider dobutamine infusion in the presence of myocardial dysfunction or ongoing signs of hypoperfusion despite adequate volume and MAP, according to the Critical Care Medicine guidelines 2
- Consider intravenous hydrocortisone (up to 300 mg/day) in patients requiring escalating dosages of vasopressors, as recommended by the Intensive Care Medicine guidelines 5, 6
Respiratory Management in Anesthesia
- Apply oxygen to achieve an oxygen saturation >90%, as suggested by the Intensive Care Medicine guidelines 6
- Place patients in a semi-recumbent position (head of bed elevated 30-45°), according to the Intensive Care Medicine guidelines 6, 7
- For patients with sepsis-induced ARDS, use low tidal volume ventilation (6 mL/kg predicted body weight), consider higher PEEP in moderate to severe ARDS, use prone positioning for patients with PaO2/FiO2 ratio <150, and consider neuromuscular blocking agents for ≤48 hours in severe ARDS, as recommended by the Intensive Care Medicine guidelines 7
- Minimize continuous or intermittent sedation in mechanically ventilated patients, targeting specific sedation endpoints, according to the Intensive Care Medicine guidelines 7
Antimicrobial Management
- Administer broad-spectrum antimicrobials with activity against all likely pathogens, as recommended by the Critical Care Medicine guidelines 4
- Reassess antimicrobial regimen daily for potential de-escalation, according to the Critical Care Medicine guidelines 4
- Consider combination empirical therapy for neutropenic patients and for difficult-to-treat, multidrug-resistant pathogens, as suggested by the Critical Care Medicine guidelines 4
- Limit empiric combination therapy to no more than 3-5 days, according to the Critical Care Medicine guidelines 4
- Typical duration of therapy is 7-10 days, with longer courses for slow clinical response, as recommended by the Critical Care Medicine guidelines 4
Source Control
- Implement source control interventions as soon as possible after diagnosis, as suggested by the Praxis Medical Insights guidelines 1
- Drain or debride the source of infection whenever possible, according to the Intensive Care Medicine guidelines 6
- Remove any foreign body or device that may potentially be the source of infection, as recommended by the Intensive Care Medicine guidelines 6
Metabolic Management
- Use a protocolized approach to blood glucose management, targeting an upper blood glucose level ≤180 mg/dL, as suggested by the Intensive Care Medicine guidelines 7
- Monitor blood glucose every 1-2 hours until glucose values and insulin infusion rates are stable, then every 4 hours, according to the Intensive Care Medicine guidelines 7
Common Pitfalls and Caveats
- Delaying antimicrobial therapy beyond one hour significantly increases mortality - each hour of delay in antibiotic administration is associated with an average 7.6% decrease in survival, as reported by the Intensive Care Medicine guidelines 6
- Failure to identify and control the source of infection promptly can lead to persistent sepsis, according to the Intensive Care Medicine guidelines 6
- Overlooking the need for frequent reassessment and de-escalation of antimicrobial therapy can contribute to antimicrobial resistance, as suggested by the Critical Care Medicine guidelines 4