Comprehensive clinical reference covering Sepsis-3 definitions, SSC Hour-1 Bundle, source identification, haemodynamic resuscitation, antibiotic stewardship, and GCC-specific sepsis protocols for bedside nursing practice.
Microbial invasion of normally sterile tissue, producing a pathological host response.
Life-threatening organ dysfunction caused by a dysregulated host response to infection. Identified by SOFA score ≥2 from baseline.
Subset of sepsis with profound circulatory, cellular, and metabolic abnormalities. Requires vasopressors to maintain MAP ≥65 mmHg AND lactate >2 mmol/L despite adequate fluid resuscitation. In-hospital mortality >40%.
SIRS criteria (temperature, HR, RR, WBC) are no longer part of the adult sepsis definition — they lack sensitivity and specificity. Organ dysfunction is the key discriminator.
| System | Parameter | Key Threshold |
|---|---|---|
| Respiratory | PaO₂/FiO₂ | <400 = score 1+ |
| Coagulation | Platelets (×10³/µL) | <150 = score 1+ |
| Liver | Bilirubin (µmol/L) | >20 = score 1+ |
| Cardiovascular | MAP / vasopressors | MAP <70 = score 1+ |
| CNS | GCS | <15 = score 1+ |
| Renal | Creatinine / urine output | Cr >110 µmol/L = 1+ |
SOFA ≥2 from baseline = organ dysfunction consistent with sepsis. Calculate delta SOFA if baseline known.
Quick SOFA for non-ICU settings. Simple 3-point score. Does NOT replace full SOFA — it is a risk stratification tool only.
GCS <15 or new confusion. Score = 1 point.
Tachypnoea as marker of physiologic stress. Score = 1 point.
Hypotension indicating haemodynamic compromise. Score = 1 point.
Perform full SOFA assessment, activate sepsis response team, initiate Hour-1 Bundle evaluation. qSOFA ≥2 associated with >10% in-hospital mortality in non-ICU patients.
National Early Warning Score 2 — widely adopted in GCC hospitals as an electronic sepsis trigger within Epic/Cerner systems.
| NEWS2 Score | Risk Level | Action |
|---|---|---|
| 0–4 | Low | Routine monitoring q4–6h |
| 5–6 | Medium | Urgent review, consider sepsis screen |
| ≥7 | High | EMERGENCY — activate sepsis response |
| 3 in single parameter | Flag | Urgent clinical review |
Many GCC hospitals have integrated NEWS2 ≥5 or qSOFA ≥2 as automated EMR alerts to trigger the sepsis response team.
Sepsis-3 does not apply to children <18 years. Use paediatric SIRS + suspected infection + organ dysfunction.
| Age Group | HR (beats/min) | RR (/min) | WBC (×10³) |
|---|---|---|---|
| Neonate (0–7d) | >180 or <100 | >50 | >34 |
| 1 week–1 month | >180 or <100 | >40 | >19.5 or <5 |
| 1 month–1 year | >180 or <90 | >34 | >17.5 or <5 |
| 2–5 years | >140 | >22 | >15.5 or <6 |
| 6–12 years | >130 | >18 | >13.5 or <4.5 |
| 13–18 years | >110 | >14 | >11 or <4.5 |
Paediatric septic shock: SBP below 5th percentile for age OR need for vasoactive agent.
Vertical transmission. Common organisms: GBS (Group B Streptococcus), E.coli, Listeria. Risk factors: prolonged ROM >18h, maternal GBS, prematurity.
Nosocomial or community. Common: CoNS (NICU), Klebsiella, Pseudomonas, Candida. Risk: central lines, prematurity, prolonged antibiotics.
Temperature instability (hypothermia in preterm) • Lethargy/poor tone • Poor feeding/abdominal distension • Apnoea/tachypnoea • Skin mottling/jaundice • Hypoglycaemia
The Surviving Sepsis Campaign updated the 3-hour and 6-hour bundles to a single Hour-1 Bundle in 2018. Time zero = time of sepsis recognition (not ED arrival). All 5 elements must be completed simultaneously, not sequentially.
Reassuring. Continue to monitor. Sepsis may still be present — do not rely on lactate alone. Treat other criteria.
Cryptic (occult) hypoperfusion. Assess fluid responsiveness. Give fluids if responsive. Re-measure at 2h. Lactate clearance target ≥10%.
Severe tissue hypoperfusion. 30 ml/kg IV crystalloid IMMEDIATELY. ICU admission. Vasopressors likely needed. Mortality risk >40%.
Note: Lactate elevation may be non-ischaemic (thiamine deficiency, liver disease, metformin, epinephrine). Interpret in clinical context.
| Source | Common Pathogens (GCC) | Clinical Clues | Key Investigation |
|---|---|---|---|
| Urinary (UTI/Pyelonephritis) Most common community |
E.coli (60%), Klebsiella pneumoniae, Proteus, Enterococcus | Dysuria, frequency, loin pain, suprapubic tenderness, catheter in situ | Urine MC&S (midstream or catheter), urine dipstick, renal USS |
| Respiratory (CAP/HAP/VAP) | S.pneumoniae, H.influenzae (CAP); Pseudomonas, Klebsiella, MRSA (HAP/VAP) | Cough, sputum, pleuritic pain, consolidation on CXR, ventilated >48h | CXR/CT chest, sputum/BAL MC&S, Legionella + pneumococcal urinary antigen |
| Abdominal | E.coli, Klebsiella, Bacteroides, Enterococcus, mixed flora | Abdominal pain/tenderness/guarding, vomiting, jaundice (biliary), elevated LFTs/lipase | CT abdomen/pelvis with contrast, abdominal USS, blood cultures ×2, surgical review |
| Skin/SSTI/Necrotising Fasciitis | S.aureus (MRSA), GAS (Strep pyogenes), Vibrio (marine exposure) | Cellulitis, wound infection, crepitus (NF), disproportionate pain, diabetes history | Wound swab, urgent surgical review, CT soft tissue, blood cultures |
| Line-Related (CLABSI) | CoNS (S.epidermidis), S.aureus/MRSA, Candida, Gram-negatives | Fever ± rigors with CVC in situ, line site erythema, no other source found | Paired blood cultures (peripheral + central), consider line removal, echocardiography |
| Endocarditis | Streptococci (viridans), S.aureus/MRSA, Enterococcus, HACEK group | Murmur, embolic phenomena (Janeway/Osler), IVDU history, prosthetic valve | 3 sets blood cultures >6h apart, echocardiography (TOE preferred), Duke criteria |
| Meningitis/Encephalitis | N.meningitidis, S.pneumoniae, Listeria (elderly/immunocompromised), HSV (encephalitis) | Headache, neck stiffness, photophobia, rash (meningococcal), altered GCS | CT head BEFORE LP (if focal neurology/papilloedema), CSF analysis, blood cultures first |
Perforated viscus, ischaemic bowel, cholangitis — surgical or interventional radiology drainage within 12 hours of diagnosis. Every hour of delay worsens outcomes.
Infected CVC/PICC → remove within 24h (sooner in S.aureus/Candida bacteraemia — 24h). Infected urinary catheter → change. Infected prosthetic device → multidisciplinary decision.
Abscess, empyema, cholangitis — image-guided percutaneous drainage preferred over open surgery in unstable patients when feasible.
If patient deteriorating: draw cultures → give antibiotics → then imaging. Time to antibiotics takes precedence over complete source localisation.
Bacterial infection unlikely. Consider antibiotic discontinuation (in context). Strong argument against prolonged antibiotics.
Grey zone. Clinical correlation essential. Consider de-escalation if downtrending consistently.
Bacterial infection probable. Continue antibiotics. Re-measure every 48–72h.
Declining PCT by ≥80% from peak OR PCT <0.5 ng/mL + clinical improvement (afebrile, haemodynamically stable, tolerating oral) → consider antibiotic de-escalation or stop. PCT guidance reduces antibiotic duration by 1–2 days without increasing mortality (PRORATA, SAPS trials).
For mechanically ventilated patients in sinus rhythm. PPV or SVV >13% = fluid responsive. Requires tidal volume ≥8 ml/kg IBW. Not valid in arrhythmias, spontaneous breathing, or ARDS low-volume ventilation.
For spontaneously breathing patients. Elevate legs to 45° (supine) for 1 minute → 300 mL "autotransfusion". CO increase ≥10% by POCUS or pulse contour = fluid responsive. Immediately reversible — safe in fluid overload risk.
250–500 mL crystalloid over 10–15 min. Assess cardiac output response. Avoids large fluid boluses in uncertain fluid status. Preferred in patients with pulmonary oedema risk.
CVP, PCWP, IVC diameter alone are unreliable indicators of fluid responsiveness. Dynamic measures (PPV, PLR, mini-challenge) are preferred per SSC guidelines.
Aggressive fluid resuscitation appropriate — 30 ml/kg if indicated. Target MAP ≥65, UO ≥0.5 ml/kg/h, lactate clearance ≥10%.
Avoid ongoing positive fluid balance. FACTT, CLASSIC trials show negative/neutral balance from Day 2 associated with shorter ventilation, less AKI. Target slightly negative or neutral balance.
Cumulative positive fluid balance >10% body weight associated with: pulmonary oedema, prolonged ventilation, ileus, abdominal compartment syndrome, AKI worsening, increased mortality.
| Agent | Dose Range | Role in Sepsis | Key Considerations |
|---|---|---|---|
| Noradrenaline (Norepinephrine) FIRST-LINE |
0.01–3 mcg/kg/min | Alpha-1 (vasoconstriction) + mild beta-1. Raises SVR + MAP. Preferred vasopressor in septic shock. | Central line preferred; short-term peripheral large-bore acceptable. Monitor for digital ischaemia at high doses. |
| Vasopressin SECOND-LINE |
0.03–0.04 U/min (fixed) | V1 receptor — splanchnic vasoconstriction. Spares noradrenaline dose. Added when noradrenaline ≥0.25 mcg/kg/min. | Do NOT titrate vasopressin — use fixed dose. Can reduce noradrenaline requirements (VASST trial). |
| Adrenaline (Epinephrine) CARDIAC SUPPORT |
0.01–1 mcg/kg/min | Strong beta-1 inotrope + alpha-1. For septic cardiomyopathy with low CO despite noradrenaline. | Raises lactate (metabolic effect, not ischaemia) — do not use lactate clearance as target if adrenaline running. Tachycardia risk. |
| Dobutamine INOTROPE |
2–20 mcg/kg/min | Beta-1 inotrope for septic cardiomyopathy (EF <40%, low CO). Add to noradrenaline; do not use alone in vasodilatory shock. | Can cause hypotension (beta-2 vasodilation) and tachycardia. Titrate cautiously. |
| Parameter | Target |
|---|---|
| MAP | ≥65 mmHg (higher 70–75 in chronic hypertension) |
| Urine Output | ≥0.5 mL/kg/h (not reliable alone) |
| Lactate Clearance | ≥10% reduction in 2 hours from baseline |
| ScvO₂ (central venous) | ≥70% (SvO₂ mixed ≥65%) |
| Capillary Refill Time | ≤2 seconds (peripheral perfusion marker) |
| Mottling Score | Reducing mottling (knee mottling ≤Score 2) |
ProCESS, ARISE, ProMISe trials showed protocolised EGDT (CVP 8–12, ScvO₂-driven) is NOT superior to usual care. Use clinical gestalt + lactate + MAP + urine output instead.
Always check local antibiogram data, patient allergy history, and recent culture results before prescribing. These are general GCC-region empirical recommendations.
| Suspected Source | First-Line Empirical | Alternative / MDR Risk | Duration |
|---|---|---|---|
| Community Pneumonia (CAP) | Amoxicillin-clavulanate + Azithromycin OR Ceftriaxone 1–2g + Azithromycin |
Levofloxacin monotherapy (if no fluoroquinolone use in past 3 months) | 5–7 days |
| Hospital-Acquired Pneumonia (HAP) | Piperacillin-tazobactam 4.5g q6h | Meropenem 1g q8h if ESBL risk/prior antibiotics; add vancomycin if MRSA risk | 7–8 days |
| VAP (Ventilator-Associated) | Piperacillin-tazobactam + Amikacin | Meropenem ± colistin if CRE/Acinetobacter; vancomycin/linezolid for MRSA | 7–8 days (not longer) |
| Urinary Sepsis (urosepsis) | Ceftriaxone 1–2g IV q24h OR Gentamicin 5 mg/kg IV once daily |
Meropenem if prior ESBL, healthcare exposure, or failure to respond at 48h | 7 days (uncomplicated); 14 days (bacteraemia) |
| Abdominal Sepsis | Piperacillin-tazobactam 4.5g q6h | Meropenem + Metronidazole if MDR risk or prior pip-tazo; add vancomycin for enterococcal risk (post-liver transplant) | 4–7 days after source control |
| CLABSI / Line Infection | Vancomycin 25–30 mg/kg load then q8–12h (adjust AUC-guided) + Pip-tazo | Daptomycin (if VRE or Vancomycin intolerance); add antifungal if Candida risk (TPN, broad-spectrum >7d, ICU >7d) | 14 days (S.aureus minimum); 7 days (CoNS after line removal) |
| Immunocompromised (neutropaenia/transplant) | Meropenem 1g q8h + Vancomycin | Add antifungal (micafungin or voriconazole) if febrile neutropaenia >4 days on antibiotics; consider Tazocin + aminoglycoside initially | Until neutrophil recovery + afebrile 48h |
Reduces C.difficile risk • Reduces ESBL/CRE selection pressure • Decreases drug costs • Reduces adverse effects (nephrotoxicity, hepatotoxicity). De-escalation does NOT increase mortality (MERINO, RANDOMIzE-ABX trials).
Prevalent in GCC due to high antibiotic use and healthcare exposure. E.coli + Klebsiella ESBL require carbapenem therapy. Screen: prior antibiotics, recurrent UTI, healthcare contact, travel to India/Pakistan.
NDM-producing K.pneumoniae/E.coli common. Limited treatment options: ceftazidime-avibactam, meropenem-vaborbactam, colistin (last resort). Contact Infectious Diseases immediately.
Emerging in UAE/Saudi Arabia. Causes primary liver abscess + septicaemia ± endophthalmitis in diabetic patients. Hypermucoviscous phenotype. Often susceptible to standard antibiotics but aggressive clinical course.
Growing prevalence in GCC. Associated with skin/soft tissue infections, necrotising pneumonia. Empirically cover in severe CAP + young healthy patients with necrotising features.
Target AUC/MIC 400–600 mg·h/L. Use Bayesian software (e.g., InsightRx). Reduces nephrotoxicity vs. trough-only dosing.
Trough 15–20 mg/L for serious infections. If unavailable, trough target 10–15 mg/L for less severe. Check trough before 4th dose.
Check SCr daily in ICU. Co-administration with pip-tazo significantly increases nephrotoxicity risk (ACORN trial). Consider alternative in high-risk patients.
| Metric | GCC Data | Global Comparison |
|---|---|---|
| In-hospital mortality (sepsis) | 30–40% | 25–30% globally |
| ICU sepsis prevalence | ~25–30% of ICU admissions | ~20–30% globally |
| Most common community source | Urinary (40–50%) | Urinary / respiratory |
| Mean age at presentation | Younger than Western (diabetes, expat workers) | Older populations (Europe/US) |
| MRSA prevalence in GCC | 20–35% of S.aureus isolates | 15–30% globally |
| ESBL prevalence (E.coli) | 30–50% in some GCC hospitals | 10–30% globally |
Leading GCC hospitals (Cleveland Clinic Abu Dhabi, Hamad Medical Corporation, KFSHRC) have implemented automated Sepsis-3 alerts in Epic/Cerner when SOFA ≥2 + suspected infection + abnormal vitals converge.
1. Nurse assesses at bedside immediately. 2. Inform charge nurse + attending/resident. 3. Initiate sepsis documentation. 4. Begin Hour-1 Bundle elements. 5. Consider Rapid Response Team activation.
High false-positive rate (60–80%) for automated sepsis alerts. Critical thinking essential — not every alert = sepsis. Clinical gestalt + tools like qSOFA aid appropriate response.
Adapted from UK Sepsis Trust model. Dedicated nurse responsible for: sepsis education, bundle compliance auditing, mortality review, staff training, policy development. KFSHRC, HMC piloting this model.
Be honest: septic shock carries >40% in-hospital mortality. Use clear language. Avoid medical jargon. "The infection has caused several organs to start struggling" is more understood than "multi-organ dysfunction syndrome."
Explain each failing organ system: kidney (oliguria, creatinine rising), lung (ventilator), heart (vasopressors), liver (jaundice, coagulopathy). Use visual aids/diagrams when available in local language.
Initiate early: "We are treating aggressively. We also want to understand what matters most to your family member." Explore: resuscitation preferences, ICU escalation limits, dignity in care, cultural/religious wishes.
Global awareness campaign. GCC hospitals participate with public education, staff CME, social media campaigns. Organised by Global Sepsis Alliance (GSA). Theme changes annually.
SSC has regional engagement in GCC. SCCM, ESICM global guidelines applied locally with modifications for GCC epidemiology (MDR organisms, resource variation, cultural considerations).
Hour-1 Bundle compliance rate • Time to first antibiotic • Blood culture positive rate before antibiotics • ICU sepsis mortality rate • Sepsis readmission at 30 days