Septic shock is the most lethal form of sepsis — a state of hemodynamic collapse in which infection-driven vasodilation and cellular dysfunction cannot be corrected by fluid resuscitation alone. It carries a mortality rate of 20–50% depending on the number of failing organs, making it the single highest-acuity condition nurses encounter in the ICU and emergency department. Recognizing septic shock, initiating vasopressors correctly, and preventing end-organ damage are the core nursing competencies that determine patient survival.
Septic shock is defined by the Sepsis-3 criteria as sepsis plus circulatory and cellular/metabolic dysfunction — specifically: the need for vasopressors to maintain a mean arterial pressure (MAP) of at least 65 mmHg, and a serum lactate greater than 2 mmol/L despite adequate fluid resuscitation. This definition distinguishes septic shock from sepsis managed with fluids alone. The full progression from sepsis recognition through early resuscitation is covered in the sepsis nursing reference; this page focuses on the hemodynamic deterioration phase — vasopressor selection, advanced monitoring, end-organ failure management, and SOFA scoring.
| Septic shock at a glance | Detail |
|---|---|
| Definition | Sepsis + vasopressor requirement to maintain MAP ≥65 mmHg + lactate >2 mmol/L despite adequate fluids |
| MAP target | ≥65 mmHg (consider ≥70–75 mmHg in chronic hypertension or end-organ hypoperfusion) |
| Lactate threshold for shock | >2 mmol/L; lactate >4 mmol/L indicates severe tissue hypoperfusion |
| Lactate clearance target | ≥10% reduction every 2 hours; lactate normalization (<2 mmol/L) is the resuscitation goal |
| First-line vasopressor | Norepinephrine (noradrenaline) — peripheral vasoconstrictive alpha-1 + cardiac beta-1 effect |
| Fluid resuscitation | 30 mL/kg IV crystalloid bolus; reassess with dynamic parameters before further boluses |
| Mortality | 20–50%; rises sharply with each additional organ failure |
| SOFA score | Sequential Organ Failure Assessment — quantifies multi-organ dysfunction across 6 systems |
Pathophysiology of septic shock
Septic shock is a form of distributive shock — the cardiovascular system fails because of widespread, pathological vasodilation, not because of pump failure or volume loss (which distinguishes it from cardiogenic and hypovolemic shock). Understanding the mechanism clarifies why each nursing intervention is required.
Cytokine storm and vasodilation
When a severe infection triggers a dysregulated immune response, massive quantities of pro-inflammatory cytokines — including tumor necrosis factor-alpha (TNF-α), interleukin-1 (IL-1), and interleukin-6 (IL-6) — flood the systemic circulation. These cytokines cause endothelial activation and the release of vasodilatory mediators, particularly nitric oxide. Nitric oxide causes profound arterial and venous dilation, dropping systemic vascular resistance (SVR) and collapsing MAP. Despite an initially compensatory increase in cardiac output (the hyperdynamic phase), MAP falls below the threshold needed to perfuse end organs.
Microvascular dysfunction and oxygen debt
Beyond macrovascular hemodynamics, septic shock damages the microcirculation. Endothelial glycocalyx disruption, microvascular thrombosis, and capillary leak create functional shunting: blood moves through large vessels but fails to deliver oxygen at the cellular level. This is reflected in rising lactate — a marker of anaerobic metabolism and impaired cellular oxygen utilization — and explains why MAP alone is insufficient to gauge resuscitation adequacy. Lactate clearance is the most clinically reliable indicator of whether cellular perfusion is improving.
End-organ failure cascade
Without adequate perfusion, organs begin failing in a predictable sequence. The kidney — one of the most perfusion-sensitive organs — shows early dysfunction as urine output falls. The liver impairs bilirubin clearance and coagulation factor production. The lung sustains secondary ARDS in up to 40% of septic shock patients. The coagulation system, already disrupted by endothelial damage, may progress toward disseminated intravascular coagulation (DIC). Encephalopathy from cerebral hypoperfusion and inflammatory mediators causes delirium and altered mental status. Each failing organ multiplies mortality risk.
Surviving Sepsis Campaign 1-hour bundle
The Surviving Sepsis Campaign (SSC) 2021 guidelines mandate that all five bundle elements begin within one hour of septic shock recognition. The clock starts at the time of triage or clinical suspicion — not at ICU admission. Nurses in the emergency department and on med-surg units must understand this timeline, because delays of even 30–60 minutes significantly worsen outcomes.
| Bundle element | Requirement | Nursing role |
|---|---|---|
| 1. Measure lactate | Obtain initial lactate level; repeat at 2 hours if initial >2 mmol/L | Draw from arterial line or venous sample; label correctly; expedite lab processing |
| 2. Blood cultures × 2 | Two sets from two separate sites before antibiotics — do not delay antibiotics >45 min for cultures | Collect using sterile technique; note time of collection; label with site and time |
| 3. Broad-spectrum antibiotics | Administer empiric IV antibiotics immediately — within 1 hour of recognition | Obtain order, mix and infuse without delay; document administration time precisely |
| 4. IV fluid resuscitation | 30 mL/kg IV crystalloid bolus if hypotensive or lactate ≥4 mmol/L | Initiate bolus through large-bore IV; monitor lung sounds, urine output, and MAP response |
| 5. Vasopressors for MAP <65 mmHg | Start norepinephrine if MAP remains <65 mmHg despite initial fluid bolus | Initiate via central line when possible; titrate to MAP ≥65 mmHg; document dose in mcg/kg/min |
Source control — draining an abscess, removing an infected catheter or device, or surgical debridement of necrotizing tissue — is a parallel priority and should be accomplished within 6–12 hours of recognition wherever anatomically and physiologically feasible.
Vasopressor selection and management
Vasopressors are the defining pharmacological intervention of septic shock. Their goal is to restore MAP ≥65 mmHg by increasing systemic vascular resistance. The choice of agent depends on hemodynamic profile, comorbidities, and patient response. Nurses titrate vasopressors continuously, document dose adjustments in mcg/kg/min, and monitor MAP response every 5–15 minutes during active titration.
| Vasopressor | Mechanism | Dose range | Role in septic shock | Nursing considerations |
|---|---|---|---|---|
| Norepinephrine | Alpha-1 vasoconstriction (dominant) + beta-1 mild positive inotropy | 0.01–3 mcg/kg/min | First-line vasopressor — start here for all septic shock | Requires central line for sustained infusion; risk of peripheral ischemia and extravasation; titrate to MAP ≥65 mmHg; do not abruptly discontinue |
| Vasopressin | V1-receptor–mediated vasoconstriction (non-catecholamine pathway) | Fixed at 0.03–0.04 units/min | Add-on when norepinephrine dose is rising; may reduce catecholamine requirements; used for refractory shock | Fixed dose — do not titrate; monitor for mesenteric ischemia, hyponatremia; not a replacement for norepinephrine |
| Phenylephrine | Pure alpha-1 vasoconstriction — no beta activity | 0.5–6 mcg/kg/min | Use when norepinephrine causes tachyarrhythmia; alternative when norepinephrine unavailable | Can cause reflex bradycardia; does not augment cardiac output — avoid in low-output states; useful in septic shock with concurrent atrial fibrillation with rapid rate |
| Epinephrine | Alpha-1 + beta-1 + beta-2 (broad catecholamine agonist) | 0.01–0.5 mcg/kg/min | Third-line adjunct for refractory shock; may be used when norepinephrine + vasopressin insufficient | Causes hyperglycemia and tachycardia; increases lactate (metabolic effect, not hypoperfusion) — can confound lactate clearance monitoring |
| Dopamine | Dose-dependent: dopaminergic (low), beta-1 (moderate), alpha-1 (high) | 1–20 mcg/kg/min | Limited role in septic shock — higher arrhythmia risk than norepinephrine; may be used when bradycardia is present | SOAP II trial showed increased 28-day mortality vs norepinephrine in septic shock; associated with significant tachyarrhythmias; SSC guidelines recommend against as first-line |
| Dobutamine | Beta-1 positive inotrope + mild beta-2 vasodilation | 2–20 mcg/kg/min | Add-on when cardiogenic component is present — septic cardiomyopathy or myocardial depression causing low cardiac output despite MAP correction | Reduces SVR; can worsen hypotension if given without a vasopressor; titrate cautiously; monitor for tachycardia |
MAP targets and titration principles
The standard MAP target in septic shock is ≥65 mmHg, as established by the 65 trial (JAMA 2020), which showed no mortality benefit from higher targets (72–75 mmHg) in the overall population. The exception is patients with chronic hypertension or evidence of end-organ hypoperfusion at 65 mmHg — in these patients, a target of 70–75 mmHg is clinically reasonable.
Titration is a continuous nursing process. Start at the lowest effective dose. Increase in small increments (typically 0.02–0.05 mcg/kg/min for norepinephrine) every 5–10 minutes, guided by MAP response. Once MAP is stable and lactate is clearing, begin a slow wean — MAP-guided, not time-based. Abrupt discontinuation causes rebound hypotension.
SOFA score: quantifying organ failure
The Sequential Organ Failure Assessment (SOFA) score quantifies the degree of multi-organ dysfunction across six physiological systems. In Sepsis-3, a SOFA score increase of ≥2 points from baseline confirms organ dysfunction and therefore sepsis. Higher scores predict higher mortality. Nurses assess the parameters that feed into SOFA continuously; understanding the scoring helps prioritize assessment priorities.
| Organ system | Variable measured | Score 0 | Score 1 | Score 2 | Score 3 | Score 4 |
|---|---|---|---|---|---|---|
| Respiratory | PaO2/FiO2 (P/F ratio) | ≥400 | 300–399 | 200–299 (or SpO2/FiO2) | <200 with respiratory support | <100 with respiratory support |
| Coagulation | Platelets (×10³/μL) | ≥150 | 100–149 | 50–99 | 20–49 | <20 |
| Liver | Bilirubin (mg/dL) | <1.2 | 1.2–1.9 | 2.0–5.9 | 6.0–11.9 | ≥12.0 |
| Cardiovascular | MAP or vasopressor requirement | MAP ≥70 | MAP <70 | Dopamine <5 or dobutamine (any) | Dopamine 5–15 or epi/norepi ≤0.1 | Dopamine >15 or epi/norepi >0.1 |
| CNS | Glasgow Coma Scale (GCS) | 15 | 13–14 | 10–12 | 6–9 | <6 |
| Renal | Creatinine (mg/dL) or urine output | <1.2 | 1.2–1.9 | 2.0–3.4 | 3.5–4.9 or UO <500 mL/day | ≥5.0 or UO <200 mL/day |
A total SOFA score of 0–6 carries ~10% ICU mortality; 7–9 carries ~15–20%; 10–12 carries ~40–50%; ≥13 carries >80% in some populations. SOFA scores guide prognosis discussions, ICU triage, and clinical decision-making about escalation of care.
End-organ dysfunction monitoring
Preventing organ failure progression is as important as hemodynamic resuscitation. The following parameters are monitored continuously or at minimum every 2–4 hours in active septic shock.
| Organ system | Monitoring parameter | Target value | Intervention threshold |
|---|---|---|---|
| Kidney | Urine output (UO), creatinine, BUN | UO ≥0.5 mL/kg/hr; creatinine stable or declining | UO <0.5 mL/kg/hr ×2 hr → notify provider; rising creatinine suggests [AKI](/nursing-tips/aki-nursing-reference/) — see nephrology early |
| Lung | SpO2, RR, P/F ratio on ABG, bilateral infiltrates | SpO2 ≥94%; P/F ratio >300 | Increasing FiO2 requirement or bilateral crackles → suspect ARDS; review [ABG interpretation](/nursing-tips/abg-interpretation/) |
| Cardiovascular | MAP, HR, CVP, arterial waveform (if arterial line in situ) | MAP ≥65 mmHg; HR <120 | MAP <65 despite vasopressor → increase dose; tachycardia worsens cardiac output — address fever and volume status |
| Liver | AST, ALT, total bilirubin, coagulation (PT, INR) | Bilirubin <1.2 mg/dL; INR <1.5 | Rising bilirubin or INR suggests hepatic hypoperfusion — assess for DIC; see [nursing lab values reference](/nursing-tips/nursing-lab-values-cheat-sheet/) |
| Coagulation | Platelets, PT/INR, fibrinogen, D-dimer | Platelets >100; fibrinogen >200 mg/dL | Thrombocytopenia + elevated D-dimer + falling fibrinogen → DIC pathway; notify provider; FFP or platelet transfusion per protocol |
| Neurological | GCS, CAM-ICU (delirium screen), pupil response | GCS ≥15 at baseline; CAM-ICU negative | New confusion or GCS drop → assess MAP, glucose, oxygenation; delirium in septic shock is extremely common — orient frequently, minimize sedation |
| Metabolic/lactate | Serum lactate, base deficit, pH | Lactate <2 mmol/L; pH 7.35–7.45 | Lactate not clearing ≥10% per 2 hrs → escalate resuscitation strategy; persistent acidosis may require bicarbonate if pH <7.15 |
Fluid resuscitation and reassessment
The 30 mL/kg crystalloid bolus in the 1-hour bundle provides initial resuscitation, but fluid management beyond the bolus requires careful individualization. Fluid overload — marked by positive cumulative fluid balance — worsens lung function, increases abdominal compartment pressure, and independently predicts mortality in septic shock. The SMART trial (NEJM 2018) supports balanced crystalloids (lactated Ringer’s or Plasma-Lyte) over normal saline to reduce hyperchloremic acidosis and AKI risk.
Dynamic parameters for fluid responsiveness
Static parameters such as CVP are unreliable predictors of fluid responsiveness. Dynamic parameters are superior:
- Passive leg raise (PLR): Elevate legs 45° passively for 60–90 seconds. An increase in cardiac output or pulse pressure of ≥10% predicts fluid responsiveness. Reverse the maneuver immediately and administer fluid only if positive.
- Pulse pressure variation (PPV): In mechanically ventilated patients, PPV >13% suggests fluid responsiveness. Requires sinus rhythm and controlled ventilation to be valid.
- Stroke volume variation (SVV): Available via arterial line monitoring systems (e.g., FloTrac); SVV >10–15% suggests responsiveness.
Once fluid responsiveness is absent, further boluses are unlikely to improve hemodynamics and carry risk of volume overload. At this stage, vasopressor optimization — rather than more fluid — drives resuscitation.
Corticosteroids in refractory septic shock
Corticosteroids are indicated in refractory septic shock — defined as shock requiring high doses of vasopressors despite adequate volume resuscitation. The SSC 2021 guidelines recommend hydrocortisone 200 mg/day (as either a continuous infusion or intermittent dosing of 50 mg IV every 6 hours) when the norepinephrine or epinephrine dose is ≥0.25 mcg/kg/min and has been required for at least 4 hours.
The mechanism: septic shock can produce relative adrenal insufficiency, impairing cortisol’s normal vasopressor-sensitizing effects. Hydrocortisone restores vasopressor sensitivity, allowing faster vasopressor weaning. Corticosteroids in this context reduce vasopressor days but have not consistently shown mortality benefit. Key nursing considerations:
- Monitor blood glucose every 1–2 hours — steroids cause significant hyperglycemia
- Target blood glucose 140–180 mg/dL; use insulin infusion per protocol
- Do not abruptly discontinue hydrocortisone — taper as vasopressors are weaned
- Fludrocortisone 50 mcg daily (oral or via NG tube) may be added per physician preference, though evidence is mixed
Blood glucose management
Septic shock causes profound insulin resistance. Hyperglycemia in the ICU setting independently worsens outcomes through impaired neutrophil function, increased infection risk, and endothelial damage. Equally, hypoglycemia in critically ill patients causes neurological injury and mortality. The NICE-SUGAR trial established that a glucose target of 140–180 mg/dL is safer than tight glycemic control (80–110 mg/dL), which caused excess hypoglycemia-related deaths.
Nursing glucose management in septic shock:
- Monitor blood glucose every 1–2 hours when on insulin infusion
- Use bedside glucometer AND periodic serum glucose for cross-verification
- Follow unit insulin infusion protocol strictly — do not free-style dose
- Treat hypoglycemia (<70 mg/dL) immediately with 25 mL D50W IV and recheck in 15 minutes
- Corticosteroid administration and enteral nutrition both shift glucose upward — anticipate and increase monitoring frequency
Nursing interventions by clinical problem
| Nursing diagnosis | Key assessments | Priority interventions | Expected outcome |
|---|---|---|---|
| Hemodynamic instability (decreased cardiac output) | MAP, HR, BP trend, vasopressor dose, skin color/temperature, cap refill | Titrate vasopressors to MAP ≥65 mmHg; ensure arterial line in place for continuous MAP monitoring; complete 30 mL/kg bolus; reassess with PLR before additional fluid | MAP ≥65 mmHg; HR <120; warm distal extremities; improving mentation |
| Fluid volume deficit | BP, skin turgor, urine output, CVP, lactate, PLR response | Initiate 30 mL/kg crystalloid bolus; use balanced crystalloid (LR or Plasma-Lyte); reassess fluid responsiveness using dynamic parameters before repeat boluses | UO ≥0.5 mL/kg/hr; MAP ≥65 mmHg; lactate clearance ≥10%/2 hr |
| Risk for fluid overload | Lung sounds, SpO2, daily weights, intake/output balance, peripheral edema | Monitor cumulative fluid balance; reassess fluid responsiveness before each bolus; alert provider when balance exceeds +4–6 L; consider conservative strategy once resuscitation goals met | Negative or neutral fluid balance after resuscitation phase; no worsening respiratory status |
| Impaired gas exchange | SpO2, RR, ABG (P/F ratio), ventilator settings, bilateral lung sounds | Titrate supplemental oxygen to SpO2 ≥94%; elevate HOB 30–45°; prepare for intubation if increasing FiO2 requirement; monitor for ARDS; review [ABG interpretation guide](/nursing-tips/abg-interpretation/) | SpO2 ≥94% on stable or decreasing FiO2; RR <25; no new bilateral infiltrates |
| Infection/source control | Culture results, wound assessment, IV line sites, Foley insertion date, fever curve, WBC trend | Ensure blood cultures drawn ×2 before antibiotics; administer antibiotics within 1 hour; assist with source control procedures (line removal, abscess drainage, OR preparation); deescalate antibiotics once cultures finalize | Pathogen identified; targeted antibiotic therapy initiated; source controlled; fever resolving |
| Altered glucose regulation | Blood glucose q1–2h, insulin infusion rate, signs of hypoglycemia (diaphoresis, tachycardia, altered mentation) | Follow insulin infusion protocol; target glucose 140–180 mg/dL; increase monitoring frequency with corticosteroid initiation or new enteral feeds; treat hypoglycemia immediately per protocol | Blood glucose 140–180 mg/dL; no hypoglycemic episodes; stable insulin infusion rate |
| Altered mental status / delirium | GCS, CAM-ICU score, pupil response, medication review (sedatives, opioids), sleep-wake cycle | Orient patient to time, place, and situation frequently; minimize sedation depth — target RASS 0 to -1 unless ventilated; preserve circadian rhythm (lights on during day); involve family; investigate and correct metabolic causes (MAP, glucose, oxygenation) | CAM-ICU negative or improved; GCS at or near baseline; patient able to follow commands |
| End-organ monitoring: renal | Urine output hourly, serum creatinine, BUN, electrolytes | Maintain UO ≥0.5 mL/kg/hr; optimize MAP; avoid nephrotoxic medications (NSAIDs, contrast, aminoglycosides where possible); early nephrology consultation if creatinine rising; see [AKI nursing reference](/nursing-tips/aki-nursing-reference/) | UO ≥0.5 mL/kg/hr; creatinine stable; no progression to renal replacement therapy |
Septic shock vs cardiogenic shock: key distinctions
Septic shock and cardiogenic shock are both medical emergencies requiring intensive monitoring, but they differ critically in mechanism and management. Confusing them leads to harmful treatment — fluids worsen cardiogenic shock while vasopressors alone cannot solve pump failure. The heart failure nursing reference covers cardiogenic shock in depth.
| Feature | Septic shock | Cardiogenic shock |
|---|---|---|
| Mechanism | Distributive — vasodilation, high cardiac output (hyperdynamic) | Pump failure — low cardiac output, high SVR |
| Skin presentation | Warm, flushed, bounding pulses early | Cool, clammy, mottled, weak pulses |
| Cardiac output | High (early/hyperdynamic phase) | Low |
| SVR | Low | High |
| JVD / pulmonary edema | Absent early | Present — fluid overload features |
| Response to fluids | Initial MAP improvement expected | Worsens pulmonary edema |
| Primary vasopressor | Norepinephrine | Norepinephrine + dobutamine (inotropy needed) |
| Source | Infection | MI, acute decompensated HF, valve failure |
NCLEX tip: if a question describes warm skin, bounding pulses, and low MAP in the context of infection, this is septic shock. If the patient is cool, clammy, with pulmonary edema, the primary problem is cardiac.
Prognosis and family communication
Septic shock mortality ranges from 20% (single-organ involvement, source controlled, early vasopressors) to >50% (multi-organ failure, delayed treatment, immunocompromised host). Mortality rises by approximately 15–20% for each additional organ failing simultaneously. Prognostic conversations with families are an essential nursing and interdisciplinary team responsibility.
Key points for family communication:
- Use plain language: “the infection has caused the blood pressure to drop critically low, and we are using medications through the IV to support the heart and blood vessels”
- Set realistic expectations: “the next 24–48 hours are critical — we will know more once we see how the body responds to treatment”
- Identify the patient’s advance directives, health care proxy, and goals of care early — septic shock can deteriorate rapidly
- Offer regular, scheduled updates rather than waiting for family to ask
- Palliative care consultation is appropriate when organ failure is not responding or when goals shift to comfort
NCLEX-style practice questions
Question 1
A patient in septic shock has a MAP of 58 mmHg after receiving a 30 mL/kg crystalloid bolus. Which vasopressor should the nurse anticipate administering first?
A. Dopamine
B. Vasopressin
C. Norepinephrine
D. Dobutamine
Answer: C — Norepinephrine
Norepinephrine is the first-line vasopressor for septic shock per the Surviving Sepsis Campaign guidelines. Its dominant alpha-1 vasoconstrictive effect raises SVR and MAP with modest beta-1 cardiac support. Dopamine is associated with higher arrhythmia risk and is no longer recommended as first-line. Vasopressin is an adjunct, added when norepinephrine dose is escalating. Dobutamine is an inotrope for low-cardiac-output states — it would worsen hypotension without a vasopressor foundation.
Question 2
A nurse is titrating norepinephrine for a patient in septic shock. Which MAP value indicates the target has been achieved?
A. MAP 55 mmHg
B. MAP 60 mmHg
C. MAP 68 mmHg
D. MAP 80 mmHg — higher is safer
Answer: C — MAP 68 mmHg
The MAP target in septic shock is ≥65 mmHg. A MAP of 68 mmHg achieves this target. A MAP of 55 or 60 is below goal and indicates inadequate perfusion pressure. A MAP of 80 mmHg is not the routine target — the 65 trial showed no survival benefit from higher MAP targets in the general septic shock population, and maintaining higher MAP requires higher vasopressor doses with greater adverse effects.
Question 3
A patient’s serum lactate is 4.8 mmol/L on admission to the ICU with septic shock. Two hours later, the lactate is 4.3 mmol/L. How should the nurse interpret this result?
A. Lactate has cleared adequately — continue current resuscitation
B. Lactate clearance is inadequate — escalate resuscitation
C. Lactate level is within normal limits — no action needed
D. Lactate elevation is expected and does not require intervention
Answer: B — Lactate clearance is inadequate — escalate resuscitation
A lactate of 4.3 mmol/L represents a 10.4% decrease from 4.8 mmol/L. The Surviving Sepsis Campaign targets ≥10% lactate clearance every 2 hours. While 10.4% technically meets the threshold, a lactate still above 4.0 mmol/L at 2 hours indicates ongoing severe tissue hypoperfusion. The correct response is to reassess the resuscitation strategy — review vasopressor dosing, assess fluid responsiveness, and confirm source control is in progress. A lactate of 4.3 mmol/L is far from the normalization goal of <2 mmol/L.
Question 4
A patient in septic shock has been on norepinephrine at 0.28 mcg/kg/min for 6 hours and MAP remains at 62 mmHg. Which intervention should the nurse anticipate?
A. Add dobutamine to increase cardiac output
B. Administer hydrocortisone 200 mg/day IV
C. Switch norepinephrine to dopamine
D. Increase fluid boluses to 60 mL/kg total
Answer: B — Administer hydrocortisone 200 mg/day IV
Hydrocortisone is indicated in refractory septic shock when the norepinephrine dose is ≥0.25 mcg/kg/min and has been required for at least 4 hours. This patient meets both criteria. Corticosteroids restore vasopressor sensitivity by addressing relative adrenal insufficiency. Dobutamine is for a cardiogenic component, not refractory distributive shock. Switching to dopamine is contraindicated — dopamine has higher arrhythmia risk and no superiority over norepinephrine. More fluid is unlikely to help when MAP is not improving — dynamic parameter reassessment should guide further fluid decisions.
Question 5
A nurse is assessing a mechanically ventilated patient in septic shock. Pulse pressure variation (PPV) is 8%. A 500 mL fluid bolus is ordered. What should the nurse do?
A. Administer the bolus as ordered — PPV is not yet measurable
B. Hold the bolus and notify the provider — PPV suggests the patient is NOT fluid responsive
C. Administer the bolus then recheck PPV
D. Perform a passive leg raise before the bolus to confirm responsiveness
Answer: B — Hold the bolus and notify the provider
PPV <13% in a mechanically ventilated patient with sinus rhythm indicates the patient is unlikely to respond to fluid — further boluses are unlikely to improve cardiac output and increase the risk of volume overload. The appropriate response is to hold the bolus and communicate the dynamic parameter result to the provider. A PPV >13% would suggest fluid responsiveness. While a passive leg raise is a valid assessment tool, in a mechanically ventilated patient with a measurable PPV, the PPV already provides the answer.
Question 6
A patient presents with sudden severe chest pain, BP 80/50 mmHg, HR 118, cool and clammy skin, bilateral pulmonary crackles, and elevated jugular venous distension. Temperature is 37.1°C (98.8°F). Which diagnosis best fits this presentation?
A. Septic shock
B. Hypovolemic shock
C. Cardiogenic shock
D. Neurogenic shock
Answer: C — Cardiogenic shock
The constellation of cool/clammy skin (high SVR), pulmonary edema (bilateral crackles), JVD, and chest pain with no fever strongly indicates cardiogenic shock — likely from a myocardial infarction. Septic shock presents with warm, flushed skin, low SVR, and an infectious source. Hypovolemic shock has low JVD and no pulmonary edema. Neurogenic shock causes bradycardia and warm vasodilation below the level of injury. This distinction is high-yield on NCLEX — warm skin = distributive (septic); cool skin + pulmonary edema + JVD = cardiogenic. See the heart failure nursing reference for full cardiogenic shock management.
Key takeaways for nursing students
Septic shock is sepsis with hemodynamic collapse — defined by vasopressor dependence and persistent lactate elevation despite fluid resuscitation. The 1-hour bundle drives the first hour of care: cultures, antibiotics, fluid, lactate, vasopressor if needed. Norepinephrine is first-line; vasopressin and hydrocortisone are adjuncts for escalating or refractory shock. MAP ≥65 mmHg and lactate clearance ≥10% every 2 hours are the primary resuscitation targets.
SOFA scoring quantifies multi-organ dysfunction across six systems and guides prognosis. Nursing priorities center on continuous hemodynamic monitoring, vasopressor titration, fluid balance management, glucose control (140–180 mg/dL), and early detection of end-organ failure — kidneys, lungs, liver, coagulation, and brain.
Pair this reference with the sepsis nursing guide for early recognition, the ARDS nursing reference for respiratory failure complications, the AKI nursing reference for renal failure management, the ABG interpretation guide, and the nursing lab values cheat sheet.