Management

• Initiate promptly upon recognition of sepsis/septic shock.
• Prioritize resuscitation, diagnosis, and treatment by instituting the following interventions:
  • Measure lactate level (repeat lactate if initial lactate elevated [greater than 2 mmol/L]).
  • Obtain blood cultures before administering antibiotics.
  • Administer broad-spectrum antibiotics within 1 hour of recognition of sepsis.
  • Begin rapid administration of 30 mL/kg crystalloid for hypotension or lactate greater than or equal to 4 mmol/L within the first 3 hours.
  • Give vasopressors if hypotensive during or after fluid resuscitation, to maintain mean arterial pressure greater than or equal to 65mm Hg.
  • Follow the trend in lactate level and assessment of capillary refill time to guide additional fluid resuscitation.

Nursing Considerations

• Lactate (lactic acid)
  • A byproduct of glycolysis in anaerobic metabolism
  • Considered a surrogate marker of tissue hypoperfusion in sepsis
• Microbiologic cultures
  • Directed at suspected source of infection
  • Should include at least 2 sets of blood cultures (aerobic and anaerobic)  
  • Obtain prior to initiation of antibiotics; sterilization of blood occurs within minutes to hours after first does of antibiotics; early cultures increase chance of pathogen identification.
  • Inability to obtain cultures should not delay antibiotic treatment.
• Broad spectrum antibiotics
  • Early initiation is associated with decreased mortality.
  • Controlling the source of infection with antibiotics and with intervention for those infections amenable (wound drainage, debridement, removal of potentially infected device, cholecystitis) is the foundation of treating patients with sepsis or septic shock.
  • Failure to control the source of infection could lead to persisting or worsening sepsis or septic shock.
  • If a patient is not getting better, think “Do we have adequate source control?”
• Fluid resuscitation
  • Supports tissue perfusion
  • Balanced crystalloids, which are intravenous fluids such as lactated ringers solution or Plasma-Lyte, are recommended over normal saline and colloids, such as albumin or hetastarch.
  • Rapidly administer a fluid bolus of 30mL/kg crystalloid.
  • In those patients diagnosed with sepsis, the nurse plays a critical role in accurate administration of fluids as patient transitions between levels of care (i.e., ED to floor, floor to ICU).
• Vasoactive medications
  • Norepinephrine is the recommended first line agent. This is typically started at 2-5 mcg/min and titrated to a MAP greater than 65 mm Hg.
  • If MAP is inadequate despite moderate dose norepinephrine, initiate vasopressin at 0.03 U/min. This medication does NOT get titrated. Epinephrine is the suggested third line agent for refractory shock.
  • If there is cardiac dysfunction and persistent hypoperfusion, consider adding dobutamine.
  • Central venous access is the preferred route for vasoactive infusions, but if central access is unavailable, vasopressors can be infused peripherally (Evans et al., 2021).
  • An arterial line should be placed for continuous blood pressure monitoring.
• Glucocorticoid therapy (Kaufman, 2023)
  • Critical illness induces a state of relative adrenal insufficiency that may worsen shock.
  • Laboratory testing for cortisol levels is unreliable in critically ill patients, therefore glucocorticoid therapy is sometimes given empirically in patients with refractory shock (defined as persistent hypotension for more than one hour after adequate fluid resuscitation and vasopressor administration). For example, hydrocortisone 50 mg IV may be given every 6 hours.
• Ongoing assessment
  • In taking care of a patient with sepsis, it is imperative to reassess hemodynamics, volume status and tissue perfusion regularly.
    • Frequently reassess blood pressure, heart rate, respiratory rate, temperature, urine output, capillary refill, and oxygen saturation.
  • Assess patient each shift for occult or new sources of infection, such as wounds, vascular access sites, and urinary tract infection. Report concerning findings to a provider.
  • Dynamic measurements such as passive leg raising (PLR) are recommended to assess for fluid responsiveness. PLR mimics endogenous volume expansion (equivalent to an approximate 300 mL fluid bolus) and can be thought of as a preload challenge. It is used to predict if a patient will respond to additional fluid bolus. Follow these steps to perform PLR (Mikkelsen et al., 2022):
    • Position the patient in the semi-recumbent position with the head and torso elevated at 45 degrees.
    • Obtain a baseline blood pressure measurement.
    • Lower the patient's upper body and head to the horizontal position and raise and hold the legs at 45 degrees for one minute.
    • Obtain subsequent blood pressure measurement.
    • The expected response to this maneuver in those that are fluid responsive is a 10% or greater increase in cardiac output (CO). Although not considered a validated measure, we often use blood pressure as a surrogate marker of CO in evaluating response to the PLR.