SPP/EPIC Rounding Note: 68-Year-Old Male with Septic Shock, CAP, and AECOPD
SITUATION
68-year-old male admitted from ED with septic shock secondary to community-acquired pneumonia complicated by acute-on-chronic COPD exacerbation.
- Current status: Intubated, mechanically ventilated, receiving norepinephrine for persistent hypotension, sedated with propofol
- Hemodynamics: MAP maintained ≥65 mmHg on norepinephrine, lactate trending down (improving tissue perfusion marker) 1
- Respiratory: Ventilated with lung-protective strategy, respiratory acidosis with hypercapnia (consistent with COPD physiology and dead space ventilation) 1, 2
- Renal: Mild renal impairment (monitor for progression; avoid nephrotoxins)
- Infectious: Leukocytosis, on broad-spectrum antibiotics
PROBLEM LIST & PLAN
1. Septic Shock Secondary to Community-Acquired Pneumonia
Assessment: Patient meets criteria for septic shock with hypotension requiring vasopressors and elevated lactate 1. CAP in COPD patients carries 4-fold higher ICU mortality risk and increased need for mechanical ventilation 1, 3.
Plan:
- Hemodynamic targets (ongoing): Maintain MAP ≥65 mmHg (higher target of 70–75 mmHg if chronic hypertension documented); urine output ≥0.5 mL/kg/h; normalize lactate 1, 4
- Vasopressor management: Continue norepinephrine as first-line agent; if MAP inadequate despite adequate dosing, add vasopressin 0.03 U/min (never as sole agent); consider epinephrine as third-line 1, 4
- Fluid status: Initial 30 mL/kg crystalloid bolus completed; reassess fluid responsiveness with dynamic indices (pulse-pressure variation) or passive leg raise before additional boluses to avoid fluid overload 1, 4
- Lactate monitoring: Repeat lactate every 2–6 hours; target clearance ≥10% every 2 hours during first 8 hours 4
- Antimicrobial therapy:
- Continue broad-spectrum IV antibiotics covering S. pneumoniae, H. influenzae, atypical pathogens, and Pseudomonas (given COPD + healthcare exposure risk) 1, 5
- Suggested regimen: anti-pseudomonal beta-lactam (piperacillin-tazobactam, cefepime, or carbapenem) PLUS respiratory fluoroquinolone (levofloxacin or moxifloxacin) OR azithromycin for atypical coverage 1
- Daily antimicrobial reassessment: De-escalate to narrowest effective agent within 3–5 days once culture/sensitivity available; plan 7–10 day total course unless slow response or bacteremia 1, 4
- Source control: Obtain chest imaging to exclude empyema/parapneumonic effusion requiring drainage 1
2. Acute Respiratory Failure on Chronic COPD (Acute-on-Chronic Hypercapnic Respiratory Failure)
Assessment: Intubated for respiratory failure with respiratory acidosis and hypercapnia. COPD exacerbations cause hypercapnia via increased dead space/tidal volume ratio and rapid shallow breathing pattern 2. Pneumonia is present in 38% of unsuccessful non-invasive ventilation cases and predicts need for intubation 6.
Plan:
- Lung-protective ventilation (ARDS protocol):
- Oxygenation target: Maintain SpO₂ >90% and PaO₂ >60 mmHg (8 kPa); avoid excessive FiO₂ in COPD as high oxygen can worsen V/Q mismatch and induce hypoventilation/acidosis 1, 2
- Bronchodilator therapy:
- Corticosteroids for COPD exacerbation:
- Daily spontaneous breathing trial (SBT): Assess readiness when patient is arousable, hemodynamically stable without vasopressors, no new serious conditions, low ventilatory requirements, tolerates low FiO₂ 4, 7
- Weaning protocol: Use standardized protocol with regular SBTs; never extubate while still requiring vasopressors 7
3. Sedation Management (Propofol)
Assessment: Currently sedated with propofol. Propofol causes dose-dependent hypotension, especially in septic shock with low vascular tone 7.
Plan:
- Target light sedation: RASS goal of -2 to 0 (drowsy but arousable); avoid deep sedation 1, 7
- Propofol dosing: Use lowest effective dose with slow titration given septic shock and vasopressor requirement 7
- Daily sedation assessment: Use RASS score every shift; perform daily spontaneous awakening trial (SAT) when safe 7
- Avoid benzodiazepines: Associated with increased delirium, deeper sedation, and prolonged ventilation 7
- Consider dexmedetomidine: If lighter sedation needed or propofol causing hypotension; allows arousability for neuro checks 7
- Delirium screening: Assess with CAM-ICU daily; lighter sedation reduces delirium incidence 7
4. Acute Kidney Injury (Mild Renal Impairment)
Assessment: Mild renal impairment likely secondary to sepsis-induced hypoperfusion.
Plan:
- Fluid balance: Restrict fluids once shock resolved; if fluid overload develops (>10% total body weight), use diuretics; if diuretics fail, consider CVVH 1
- Renal monitoring: Daily creatinine, urine output, electrolytes
- Medication adjustment: Dose-adjust renally cleared antibiotics (e.g., beta-lactams, fluoroquinolones) based on CrCl
- Avoid nephrotoxins: Minimize aminoglycosides if possible; avoid NSAIDs, contrast unless essential
- RRT indications: Initiate only for definitive indications (refractory hyperkalemia, severe acidosis, uremic complications, refractory fluid overload)—not for isolated creatinine elevation or oliguria 1
5. Nutrition
Plan:
- Enteral nutrition: Initiate within 24–48 hours if hemodynamically stable; preferred over parenteral 1
- Route: Nasogastric or orogastric tube; post-pyloric if high aspiration risk
- Goal: 25–30 kcal/kg/day; high-protein formula (1.2–1.5 g/kg/day)
- Monitor: Gastric residuals, bowel function, electrolytes (refeeding syndrome risk)
6. Venous Thromboembolism Prophylaxis
Plan:
- Pharmacologic prophylaxis: LMWH (preferred over UFH) daily unless contraindicated (active bleeding, severe coagulopathy, platelets <50,000) 1
- If renal impairment (CrCl <30): Use dalteparin or UFH (renally adjusted) 1
- Mechanical prophylaxis: Add sequential compression devices 1
7. Stress Ulcer Prophylaxis
Plan:
- Indication: Mechanical ventilation >48 hours + coagulopathy = high bleeding risk 1
- Agent: Proton pump inhibitor (preferred) or H2-blocker 1
8. Glycemic Control
Plan:
- Target glucose: <180 mg/dL; avoid tight control (<110 mg/dL) due to hypoglycemia risk 1
- Insulin protocol: Use IV insulin infusion with hourly glucose checks until stable, then every 4 hours 1
9. Goals of Care
Plan:
- Family meeting: Address goals of care within 72 hours of ICU admission; discuss prognosis, treatment options, palliative care principles 1
- Code status: Confirm/clarify with family and document
DAILY MONITORING CHECKLIST
- Vital signs, MAP, urine output, mental status every 2–4 hours 1
- Lactate every 2–6 hours until normalized 4
- ABG daily (or more frequently if ventilator changes)
- RASS score every shift; CAM-ICU for delirium 7
- Daily SBT assessment when criteria met 4, 7
- Antimicrobial reassessment daily for de-escalation 1, 4
- Fluid balance, weight, signs of overload
- Creatinine, electrolytes, CBC daily
- Chest X-ray if clinical change
KEY PITFALLS TO AVOID
- Do not delay antibiotics >1 hour from septic shock recognition (each hour delay increases mortality 7.6%) 4
- Do not give excessive oxygen in COPD—can worsen hypercapnia and acidosis 1, 2
- Do not use dopamine as first-line vasopressor—more arrhythmias than norepinephrine 1, 4
- Do not extubate while on vasopressors—absolute contraindication 7
- Do not over-sedate—target light sedation (RASS -2 to 0) to facilitate weaning 1, 7
- Do not continue broad-spectrum antibiotics beyond 7–10 days without clear indication—reassess daily for de-escalation 1, 4