12.5 Alternative ICU Delivery Models and Disaster Healthcare Management
Key Takeaways
- Tele-ICU (eICU) extends intensivist coverage to remote hospitals; pharmacist roles include remote order review, renal dose adjustment, antimicrobial stewardship, and 24/7 verification across multiple facilities.
- Post-ICU clinics (ICU follow-up clinics) and ICU diaries reduce post-intensive care syndrome (PICS); pharmacist role includes medication reconciliation, deprescribing, and managing post-ICU sequelae.
- Disaster pharmacotherapy requires mass casualty triage protocols, medication stockpiling (strategic national stockpile), antidote availability (cyanide, nerve agents, radiation), and crisis standards of care for ventilator allocation.
- Emergency mass casualty antidotes include hydroxocobalamin (cyanide), atropine/pralidoxime (nerve agents), potassium iodide (radiation), and prussian blue (radioactive cesium/thallium); ICU pharmacists must know dosing and availability.
Alternative ICU Delivery Models and Disaster Healthcare Management
Alternative Healthcare Delivery Modalities (ECO 3B6)
Tele-ICU (eICU)
Tele-ICU programs deliver remote intensivist and nursing coverage to ICUs without 24/7 on-site presence. Models include:
- Continuous centralized model: hub staffed 24/7 by intensivists, nurses, pharmacists monitoring multiple ICUs.
- Periodic/episodic model: scheduled teleconsults for rounds or specific issues.
- Reactive model: remote team responds to alerts or pages.
Pharmacist role in tele-ICU:
- Remote order verification and renal dose adjustment across facilities.
- 24/7 antimicrobial stewardship via tele-stewardship rounds.
- IV-to-PO conversion protocols.
- Therapeutic drug monitoring (vancomycin AUC dosing) remotely.
- Participation in multidisciplinary rounds and code response.
- Documentation in shared EHR with state-specific licensure (interstate medical compact).
Outcomes: Meta-analyses show reduced ICU mortality and length of stay with continuous tele-ICU coverage; greatest benefit in smaller hospitals without 24/7 on-site intensivist.
Post-ICU Clinic and Recovery Programs
Post-intensive care syndrome (PICS) affects 50-80% of survivors with cognitive, psychological, and physical impairment. Post-ICU clinics (PICS clinics) provide multidisciplinary follow-up 2-4 weeks post-discharge.
Pharmacist role:
- Comprehensive medication reconciliation.
- Deprescribing of unnecessary post-ICU medications (PPIs started for SUP, anticoagulation no longer indicated, antipsychotics started for delirium).
- Management of post-ICU sequelae: neuropathic pain (gabapentin), PTSD (SSRIs), insomnia (sleep hygiene first, then trazodone).
- Education on chronic disease medications resumed after acute illness.
- Coordination with primary care and specialists.
ICU diaries: written by nurses and family during ICU stay; reduce PTSD and anxiety post-discharge. Pharmacist can contribute entries about medication changes and sedation holds.
Long-Term Acute Care Hospitals (LTACH) and Step-Down Units
ICU step-down and LTACH transitions require structured handoffs including full medication list, antibiotic plans (duration, de-escalation), anticoagulation plan, TPN weaning, and goals-of-care conversations. Pharmacist-led transitions of care reduce medication errors.
Disaster Healthcare Management (ECO 3B7)
Mass Casualty Triage and Pharmacist Role
During mass casualty events (natural disaster, mass shooting, chemical release, radiation, biological attack), pharmacists support:
- Medication supply chain and inventory surge.
- Antidote identification and dosing.
- Sterile compounding surge capacity.
- Crisis standards of care: ventilator allocation, vasopressor triage.
- Patient identification (medication reconciliation in chaos).
- Pain and sedation in resource-limited settings.
Strategic National Stockpile (SNS)
CDC's SNS provides 12-hour push packages of essential medical supplies to states during public health emergencies. Contents include:
- Antibiotics for anthrax/plague/tularemia post-exposure (ciprofloxacin, doxycycline).
- Antivirals (oseltamivir for influenza surge).
- Chemical antidotes (atropine, pralidoxime, midazolam for nerve agents).
- Vaccines and antitoxins (botulism antitoxin heptavalent, smallpox vaccine).
- Ventilators and PPE.
High-Yield Antidote Dosing for Mass Casualty
| Threat | Antidote | Adult Dosing |
|---|---|---|
| Cyanide (smoke inhalation, chemical) | Hydroxocobalamin | 5 g IV over 15 min; repeat 5 g if severe |
| Nerve agents (sarin, VX) | Atropine + Pralidoxime | Atropine 2-6 mg IV q5-10 min until secretions dry; 2-PAM 600-1800 mg IM/IV |
| Radiation (iodine) | Potassium iodide (KI) | 130 mg PO daily x10 days (adults >40 only if high exposure) |
| Radioactive cesium/thallium | Prussian blue | 1 g PO TID x30 days |
| Heavy metals (lead, arsenic) | Succimer (DMSA), dimercaprol (BAL), EDTA | Per agent-specific protocols |
| Methanol/ethylene glycol | Fomepizole | 15 mg/kg IV load, then 10 mg/kg q12h x4 doses, then 15 mg/kg q12h until methanol <20 mg/dL and acidosis resolved |
| Opioid mass exposure (fentanyl analog) | Naloxone | 0.4-2 mg IV/IM; repeat as needed; continuous infusion 2/3 of effective dose per hour |
| Botulinum toxin | Botulism antitoxin heptavalent (BAT) | Per CDC protocol; obtain through state health department |
Crisis Standards of Care
Per the Institute of Medicine (now National Academies) framework:
- Fairness: transparent triage criteria.
- Duty to care: maintain best possible care under constraints.
- Duty to steward resources: ventilator allocation by survival probability.
- Transparency: public and clinician understanding of altered standards.
- Proportionality: restrictions scale to scarcity.
- Accountability: documentation and review.
Pharmacist role: ensure medication allocation aligns with crisis standards, document decisions, support ethics committees.
Specific Disaster Pharmacotherapy Considerations
- Pandemic surge (COVID/flu): corticosteroid use per guidelines (dexamethasone 6 mg daily x10 days for COVID-19 requiring oxygen), antiviral stewardship, anticoagulation prophylaxis adjusted to thrombotic risk.
- Mass burns: antibiotic dosing per ARC (see 9.6), escharotomy pain control.
- Crush injuries: rhabdomyolysis management with fluids, bicarbonate; mannitol not first-line.
- Chemical exposures: decontamination before entering facility.
- Nuclear/radiation: KI timing critical (effective within 4 hours of exposure).
Operational Preparedness
- Antidote stocking: ASHP recommends stocking 24h supply of high-volume antidotes (hydroxocobalamin, fomepizole, naloxone, atropine); pharmacy director ensures quantity.
- Disaster drill participation: pharmacist role in mass casualty exercises.
- Emergency medication sets: pre-stocked code carts, smart pump libraries.
- Alternative compounding: during IV shortage, identify oral alternatives, compounding from tablets, conservative dosing.
Clinical Scenario
A chemical plant explosion releases cyanide. Six victims arrive simultaneously with altered mental status, hypotension, and lactate >10 mmol/L. Hospital pharmacy stocks only 4 vials of hydroxocobalamin (5 g each). What is the appropriate response?
Answer: Cyanide toxicity from smoke or industrial exposure should be treated with hydroxocobalamin 5 g IV over 15 minutes per patient. With only 4 vials for 6 patients, immediately activate the strategic national stockpile (state health department emergency line) and request emergency resupply. Alternative: sodium thiososulfate (12.5 g IV) + sodium nitrite (300 mg IV) kit (Nithiodote) for adult patients without smoke inhalation (nitrites induce methemoglobinemia, dangerous in concomitant CO exposure). Initiate supportive care (100% oxygen, sodium bicarbonate for severe metabolic acidosis, vasopressors for hypotension). Document triage decisions per crisis standards of care.
A patient exposed to a nerve agent (sarin) in a mass casualty event is seizing with copious oral secretions. Which antidote combination is most appropriate, and what is the dosing endpoint for atropine?
Which post-ICU clinic pharmacist intervention has the strongest evidence for reducing post-intensive care syndrome (PICS) and medication-related readmissions?