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Crash Induction in Septic Shock: Necrotizing Fasciitis OR Resuscitation [ Case Discussion ](https://mdster.com/blog?category=case-discussion) Crash Induction in Septic Shock: Necrotizing Fasciitis OR Resuscitation ========================================================================= A case-based discussion of airway, pressors, ventilation, coagulation, and ethics when source control can’t wait [ MDster Editorial Team ](https://mdster.com/about) · Feb 07, 2026 · 8 min read · 70 [ Reviewed by Dr. Ali Ragab, MBBCH, MSc, MCAI ](https://mdster.com/medical-reviewers/dr-ali-ragab) [Editorial Policy](https://mdster.com/editorial-policy) | [Corrections Policy](https://mdster.com/corrections) [ Anesthesiology ](https://mdster.com/blog?tag=anesthesiology) [ Septic Shock ](https://mdster.com/blog?tag=septic-shock) [ Emergency Anesthesia ](https://mdster.com/blog?tag=emergency-anesthesia) [ Trauma & Massive Transfusion ](https://mdster.com/blog?tag=trauma-massive-transfusion) [ Airway Management ](https://mdster.com/blog?tag=airway-management) [ Critical Care ](https://mdster.com/blog?tag=critical-care) Share this article Share this post A mottled, confused 54-year-old with groin-to-abdominal bullae rolls into the OR because the OR is the only place fast enough. His MAP is collapsing (75/40), lactate is 8.5, pH 7.15 with a big base deficit, and he’s “Kussmaul-ing” to keep his PaCO₂ down. This is the moment where induction is not a routine anesthetic—it’s a physiologic amputation, and the wrong 60 seconds can convert salvageable shock into arrest. Working diagnosis and what matters *right now* ---------------------------------------------- This is septic shock from necrotizing fasciitis with impending multi-organ failure. The erythema/bullae, toxicity, lactate, and mental status changes are enough—imaging is a luxury if it delays debridement. The anesthetic problem is three simultaneous time-critical threats: (1) **loss of sympathetic tone and venous return at induction**, (2) **loss of the patient’s respiratory compensation** when you take over ventilation, and (3) **coagulopathy** that can declare itself abruptly once you start cutting. Consequently, “first 5 minutes” management should look less like checklist medicine and more like parallel processing: someone squeezing a pressure bag, someone priming norepinephrine, and you already thinking about what you’ll do if the laryngoscopy is easy but the blood pressure is not. The first 5 minutes: stabilization without delaying source control ------------------------------------------------------------------ Start by making the room behave like a resuscitation bay. Put the defib pads on early; if he arrests, you do not want to lose time. Preoxygenation should be aggressive but hemodynamically tolerant: high-flow O₂, jaw thrust, and a low threshold for adding gentle CPAP if it improves saturation—balanced against worsening venous return. For monitoring, a **pre-induction arterial line** is ideal, but don’t fetishize it. If the pulse is thready, a **femoral arterial line** is often faster and more reliable than radial in profound vasoconstriction. Treat vasopressors as *induction prep*, not rescue: start **norepinephrine** early (peripheral is acceptable through a large-bore, well-sited cannula while central access is pending), and have **push-dose epinephrine** drawn up for the peri-intubation cliff. Fluids matter, but so does the *rate* and *signal*. Wide-open balanced crystalloid while you search for responsiveness is reasonable; in practice, you’re trying to buy preload for the next 3 minutes, not “complete resuscitation.” Meanwhile, confirm broad-spectrum antibiotics are running and that clindamycin (or equivalent toxin-suppression strategy) has been considered—because surgery without antibiotics is incomplete source control. > **Clinical Pearl:** In profound metabolic acidosis, the most dangerous ventilator setting is often the one that “normalizes” PaCO₂. Matching the patient’s pre-intubation minute ventilation can be more life-saving than any single vasopressor bolus. Induction strategy: choosing drugs is the easy part; choosing physiology is the hard part ----------------------------------------------------------------------------------------- This is a full-stomach, high-aspiration-risk patient who is already hypoxemic, hypotensive, and catecholamine-saturated (or catecholamine-depleted—you don’t know which until you push a drug). Current consensus practice favors **RSI with a hemodynamically conservative hypnotic** and a plan for immediate pressor support. Etomidate and ketamine are the usual contenders; clinical judgment dictates which “risk” you accept. Etomidate is often chosen when the overriding priority is avoiding vasodilation/myocardial depression in the next 30 seconds. Ketamine can be useful when bronchospasm or severe pain/agitation is prominent, but in late septic shock (relative catecholamine depletion), its direct myocardial depressant effect can unmask collapse. Whatever you choose, the high-yield board answer is not the agent—it’s the preparation: **pressor running before induction**, **minimized induction dose**, immediate confirmation of ventilation/ETCO₂, and rapid transition to a vasopressor-forward maintenance plan. Airway-wise, this is not the case to “save the video laryngoscope.” Using VL first pass aligns with the mindset of minimizing hypoxemia time; have a second-generation supraglottic airway and front-of-neck access kit immediately available in line with difficult airway principles (ASA and DAS guidance emphasize planning, oxygenation, and limiting repeated laryngoscopy attempts). Post-intubation ventilation: don’t steal their compensation ----------------------------------------------------------- The pre-induction ABG pattern (pH 7.15 with PaCO₂ 25 mmHg) tells you the patient’s survival strategy is **high minute ventilation**. If you intubate and then “rest” them to a PaCO₂ of 40, the pH will acutely fall further and you can precipitate refractory vasoplegia, arrhythmias, or arrest. So the initial ventilator goal is pragmatic: **approximate their pre-intubation PaCO₂** (often 25–30) while staying lung-protective. Use 6–8 mL/kg PBW, then achieve the minute ventilation with a higher RR (commonly 20–30) while watching for auto-PEEP and rising plateau pressures. Apply modest PEEP to recruit and improve SpO₂, but be honest about the trade: increasing intrathoracic pressure can worsen venous return and RV output in a patient whose circulation is already preload-fragile. Recheck an ABG early; end-tidal can under-read PaCO₂ when dead space is high. When norepinephrine isn’t enough: escalation that matches septic physiology --------------------------------------------------------------------------- Ten minutes in, norepinephrine is 0.3 mcg/kg/min and the MAP is still ~55 despite ongoing resuscitation. At this point, “more norepinephrine” may work, but the board-relevant next step is usually **add vasopressin** (fixed-dose strategy) to reduce catecholamine requirements and address vasoplegia. If perfusion remains poor or there’s suspected septic cardiomyopathy (rising lactate, low pulse pressure, echo showing reduced LV function), adding **epinephrine** (or another inotrope strategy guided by echo) can be rational. This is also where bedside echo/POCUS earns its keep: it won’t tell you “give 2 liters,” but it can expose the big mistakes—severe LV dysfunction, RV failure from high airway pressures/PEEP, or a tiny, underfilled ventricle that’s begging for preload. Fluids: dynamic guidance, real-world limitations ------------------------------------------------ PPV/SVV can be useful if the conditions are met, but septic nec fasc debridement often breaks the rules: low tidal volumes, open abdomen, variable chest wall compliance, and atrial fibrillation at 2 a.m. When you can use them, a higher PPV/SVV suggests fluid responsiveness; when you can’t, fall back on trends: arterial waveform quality, echo-derived stroke volume surrogates, capillary refill/skin perfusion, lactate trajectory, and response to small boluses. One exam-friendly landmine: **avoid hydroxyethyl starches** in septic patients because of renal injury risk; balanced crystalloids remain first-line, with blood products driven by bleeding/coagulopathy rather than “hemoglobin targets” alone. Sudden collapse with dark, non-clotting blood: think DIC until proven otherwise ------------------------------------------------------------------------------- Mid-debridement, the BP is 50/30 and the surgeon reports dark, non-clotting blood. You must treat the physiology (perfusion) and the hemostasis problem at the same time. Problem to considerClues in the roomImmediate actions**DIC from severe sepsis**Oozing from lines, diffuse field bleeding, shock out of proportion**Activate MTP**, send CBC/INR/PTT/fibrinogen + ROTEM/TEG if available, replace fibrinogen early (cryo or concentrate), warm patient, correct Ca²⁺**Dilutional coagulopathy**Large-volume crystalloid before hemostatic resuscitationShift to balanced blood product resuscitation; avoid chasing BP with crystalloid alone**Surgical vascular injury**Sudden brisk loss; field source identifiableCommunicate, compress/pack, rapid blood, consider temporary control and damage-control approach If viscoelastic testing suggests hyperfibrinolysis, TXA may be considered; if not, empiric TXA is more nuanced in septic coagulopathy and should be individualized. Throughout, remember temperature, calcium, and pH are “coagulation drugs” you control continuously. Clinical application: the conversation after the knife ------------------------------------------------------ If the patient survives to ICU with refractory shock and evolving organ failure, the anesthesiologist’s role shifts from procedure to prognosis framing. Families often hear “we can do CRRT and more pressors” as synonymous with recovery. A more ethically grounded approach is to translate interventions into outcomes the patient would recognize: expected neurologic recovery, likelihood of returning home, and burdens of prolonged life support. Autonomy is respected by seeking prior wishes; beneficence and non-maleficence require stating when CPR is unlikely to restore meaningful life in refractory septic shock. A DNR order, when appropriate, is not “do not treat”—it’s “do not perform non-beneficial resuscitation.” Key Points for Board Exams -------------------------- - In septic shock, **pressor support should start before induction**; treat induction as a predictable hypotensive event. - For severe metabolic acidosis, **match pre-intubation minute ventilation** initially; avoid abrupt PaCO₂ normalization. - When MAP remains low on moderate/high-dose norepinephrine, **add vasopressin** (and consider epinephrine/inotropy if myocardial depression is suspected). - **HES is contraindicated** in sepsis due to renal injury risk. - Sudden hypotension with **non-clotting blood** during nec fasc debridement: prioritize **DIC/dilutional coagulopathy vs surgical injury**, activate **MTP**, and replace **fibrinogen early**. - Airway strategy should minimize hypoxemia time and repeated attempts; align planning with **ASA/DAS difficult airway principles**. Key Points Summary ------------------ - **Resuscitate while inducing**: A-line (often femoral), norepinephrine running, rapid-access blood, temperature and calcium management. - **Ventilate to the acid-base problem**: RR up, lung-protective VT, cautious PEEP, early ABG. - **Escalate pressors thoughtfully**: vasopressin add-on for vasoplegia; echo to detect septic cardiomyopathy. - **Treat bleeding as pathophysiology**: MTP + viscoelastic testing; don’t let hypothermia, hypocalcemia, and acidosis win. Conclusion ---------- Necrotizing fasciitis in shock is an anesthesia stress test that rewards physiologic honesty: induction is a hemodynamic intervention, ventilation is acid-base therapy, and bleeding is often coagulopathy until proven otherwise. If you can keep oxygen delivery intact through the first 10 minutes—without erasing respiratory compensation—you’ve given surgery the only thing it can’t create: time. 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