Immediate Management of Septic Shock
The immediate management of septic shock requires rapid administration of IV crystalloids (at least 30 mL/kg within the first 3 hours), broad-spectrum antimicrobials within one hour of recognition, and norepinephrine as the first-line vasopressor to maintain a mean arterial pressure of 65 mmHg. 1, 2, 3
Initial Resuscitation
- Begin immediate resuscitation for patients with sepsis-induced hypoperfusion or septic shock 1
- Administer at least 30 mL/kg of IV crystalloid fluid within the first 3 hours 1, 2
- Use crystalloids (balanced crystalloids or normal saline) as the fluid of choice for initial resuscitation 1, 4
- Avoid hydroxyethyl starches for intravascular volume replacement due to increased risk of acute kidney injury and mortality 1, 3, 5
- Consider albumin in addition to crystalloids when patients require substantial amounts of crystalloids 1, 5
- Continue fluid administration using a fluid challenge technique as long as hemodynamic parameters continue to improve 1, 3
Antimicrobial Therapy
- Obtain appropriate routine microbiologic cultures before starting antimicrobial therapy (if no significant delay >45 minutes) 2
- Administer IV antimicrobials as soon as possible and within one hour of recognition of septic shock 2, 6
- Use empiric broad-spectrum therapy with one or more antimicrobials to cover all likely pathogens based on the clinical syndrome, patient history, and local epidemiology 2, 3
Source Control
- Identify or exclude a specific anatomic diagnosis of infection requiring emergent source control as rapidly as possible 2
- Implement required source control interventions (drainage or debridement) as soon as medically and logistically practical 2
- Remove any foreign body or device that may potentially be the source of infection 2
Hemodynamic Support and Monitoring
- Target a mean arterial pressure of 65 mmHg in patients requiring vasopressors 1, 2, 4
- Use norepinephrine as the first-choice vasopressor for patients with persistent hypotension despite adequate fluid resuscitation 2, 3, 6
- If hypotension persists, consider adding vasopressin (start at 0.01 units/minute, titrate up by 0.005 units/minute at 10-15 minute intervals, up to 0.07 units/minute) 7, 6
- For refractory hypotension, consider epinephrine (0.05 mcg/kg/min to 2 mcg/kg/min, titrated to achieve desired MAP) 8, 6
- Monitor for signs of adequate tissue perfusion, including capillary refill time, skin mottling, temperature of extremities, peripheral pulses, mental status, and urine output 2
Lactate Monitoring
- Measure lactate levels at the time of sepsis diagnosis 1, 2
- Repeat lactate measurement within 6 hours after initial fluid resuscitation if initially elevated 1, 2
- Guide resuscitation to normalize lactate in patients with elevated lactate levels as a marker of tissue hypoperfusion 2, 9
Respiratory Support
- Apply oxygen to achieve an oxygen saturation >90% 2, 3
- Consider non-invasive ventilation in patients with dyspnea and/or persistent hypoxemia despite oxygen therapy 2, 3
- Place patients in a semi-recumbent position (head of the bed raised to 30-45°) 2
Common Pitfalls and Caveats
- Avoid fluid overresuscitation, which can delay organ recovery, prolong ICU stay, and increase mortality 3, 4
- Do not delay antimicrobial administration for cultures if obtaining cultures would delay therapy by >45 minutes 2, 6
- Avoid using hydroxyethyl starches due to increased risk of acute kidney injury and mortality 1, 3, 5
- Do not rely solely on static measures like central venous pressure to guide fluid resuscitation; use dynamic variables when available 1, 10
Ongoing Management
- Reassess the patient frequently to evaluate response to treatment and need for escalation of care 2
- Plan to narrow antimicrobial therapy once pathogen identification and sensitivities are established and/or adequate clinical improvement is noted 2
- After hemodynamic stabilization, wean vasopressors incrementally over time 8