Rory Jess Spiegel
Every 5 years, the Surviving Sepsis Campaign (SSC) releases an updated iteration of its guidelines. With each update, we anticipate that new evidence and longstanding concerns about prior recommendations will be addressed. However, these expectations are repeatedly unmet, leading to ongoing disappointment. Rather than evolving in response to emerging data and criticism, the SSC has chosen to largely preserve prior recommendations and, in some cases, reinforce the most problematic aspects of its guidance. Key Elements of the Guidelines This three-part series will examine key elements of the 2026 SSC guidelines and explore where specific recommendations fail to align with the best available evidence. Why does this matter? After all, these are guidelines. In principle, they are meant to inform rather than dictate practice, allowing thoughtful clinicians to individualize care based on physiology, experience, and interpretation of the literature. In practice, however, SSC guidelines exert substantial influence over what is considered “standard of care” in sepsis management. As they are distilled into summaries and infographics, nuance is lost and complexity is reduced to simplified “take-home” messages. This process creates a false sense of evidentiary certainty that is not supported by the underlying data. The result is a growing perception that rigid adherence to protocolized bundles represents optimal care. Perhaps the most important reason to push back against such an overbearing set of recommendations is because SSC guidelines have historically informed pay-for-performance measures, most notably the SEP 1 treatment bundle.1 This metric is used to evaluate the quality of sepsis care despite being logistically burdensome and difficult for institutions to consistently meet.2 Even more concerning, there remains no convincing evidence that compliance with SEP 1 improves patient outcomes.3 It is reasonable to anticipate that future iterations of this metric will continue to draw from SSC guidelines, further amplifying strain on already overextended clinical systems. With that context, we turn to the evidence supporting the recommendations by which clinicians are judged. Let's start by examining the SSC stance on fluid resuscitation. Weight-Based Fluid Administration Remains Central to the SSC Resuscitation Strategy For adults with sepsis-induced hypoperfusion or septic shock, we “suggest” administering at least 30 mL/kg of IV crystalloid in the first 3 hours. (Conditional recommendation, low certainty evidence) This recommendation first appeared in the 2012 guidelines and was not originally grounded in physiologic rationale or high-quality evidence.4 Retrospective justification has relied on the observation that patients in several large, randomized trials received approximately this volume of fluid.5 In the current iteration, the rationale remains largely unchanged. The recommendation persists because it has been previously endorsed, and because observational studies suggest worse outcomes in patients who do not receive 30 mL per kg.6 However, these observational studies are fundamentally flawed and are incapable of demonstrating the benefits they purport due to the bias introduced by their methodology. Clinicians often withhold large fluid volumes in patients with conditions such as heart failure, renal failure, frailty, or pulmonary edema. These same factors are independently associated with worse outcomes. As a result, the observed association between lower fluid volumes and poorer outcomes cannot be interpreted as causal. In contrast, the most rigorous trials fail to demonstrate a clear benefit to a fixed 30 mL/kg strategy.7 And why would it? Given the profound heterogeneity of sepsis, the notion that fluid resuscitation can be standardized based solely on body weight lacks physiologic plausibility Ongoing Fluid Needs Should be Evaluated Using Dynamic Measures of Fluid Responsiveness For adults with sepsis or septic shock, we “suggest” using dynamic measures to guide fluid resuscitation over physical examination or static measures alone. (Conditional recommendation, low certainty evidence) Examples of dynamic markers of fluid responsiveness provided include passive leg raise testing, stroke volume changes, pulse pressure variation, and stroke volume variation. While this represents a step forward compared to earlier guidance, the recommendation remains incomplete. Each of these measures has important limitations and is, at best, a modest predictor of fluid responsiveness.8 More importantly, the concept of fluid responsiveness itself is insufficient as a clinical target.9 It identifies whether cardiac output may increase following a fluid bolus, but it does not determine whether administering that bolus will benefit the patient. What is notably absent is a meaningful discussion of fluid tolerance.9 Clinicians must consider not only the potential for increased forward flow but also the risks of tissue edema and venous congestion. Without integrating these competing factors, there remains a significant risk of over resuscitation. Role of Lactate in Resuscitation Downgraded But Not Eliminated For adults with sepsis and elevated lactate or septic shock, we “suggest” using serial lactate measurements to guide resuscitation. (Conditional recommendation, low-certainty evidence) The guidelines suggest serial lactate measurements during resuscitation. However, an important nuance appears in the remarks: Fluid administration should be individualized after the initial bolus rather than continuing fluids until lactate normalization. The guidelines are in part recommending against the previously encouraged practice of chasing serum lactate levels with repeated fluid boluses. While this is a positive shift, it does not go far enough. The guidelines stop short of clearly defining lactate's appropriate role. Lactate is an imperfect marker of hypoperfusion and is frequently elevated in sepsis for reasons unrelated to inadequate tissue perfusion. Even in cases, when it does reflect end-organ malperfusion, it does not predict whether a patient will augment cardiac output or improve organ perfusion in response to a fluid bolus.10 In practice, lactate is a prognostic marker. A decreasing lactate may reflect effective source control and overall clinical improvement. A persistently elevated lactate should prompt reassessment. Clinicians should reconsider the diagnosis, evaluate for unresolved infection, and reassess adequacy of source control rather than reflexively administering additional fluids. Conclusion The SSC has long favored a protocolized approach to sepsis management, and the 2026 guidelines largely continue this tradition. If these recommendations are incorporated into future iterations of performance metrics such as SEP 1, they risk further increasing the burden on frontline clinicians without clear evidence of benefit to patients. A more meaningful approach would move away from fixed, weight-based fluid prescriptions and toward individualized resuscitation strategies. Fluid administration should be guided by patient-specific factors, including comorbidities, disease severity, hemodynamic profile, and evidence of fluid tolerance. Only by embracing this level of clinical nuance can we move closer to truly patient centered care in sepsis management.