Cooling to help injury lungs (CHILL)

Phase IIB Randomized Control Trial of Therapeutic Hypothermia (TH) plus Neuromuscular Blockade (NMB) in Patients with ARDS.

For screening, contact via Halo: HFH DEM Research

Inclusion Criteria:

  • Mechanically ventilated for ≤ 7 days (trach ok also)
  • Severe ARDS by Berlin criteria:
    • P/F ratio <200 with PEEP ≥8 cm H2O
    • Bilateral infiltrates not completely explained by hydrostatic pulmonary edema or atelectasis
    • Occurring within 7 days of exposure to a predisposing condition (ongoing exposure, not just initiation of the predisposing condition).
  • Randomization must occur within 72 hours of ARDS.

Exclusion Criteria:

  • Refractory hypotension (>2 µg/kg/min norepi or equivalent for >6h prior to randomization
  • Core temp < 35.5°C except CRRT for ≥6h on day of randomization
  • Bleeding (>3u blood products in <24h, surgery or IR day on day of randomization
  • Platelets < 10K/mm 3 day of randomization
  • Active hematologic malignancy
  • Skin process that precludes cooling
  • Moribund (<72 h predicted survival)
  • Pre-morbid condition – unlikely 28d survival
  • DNR (ie no CPR in the event of cardiac arrest)
  • Unlikely to remain intubated for ≥48h
  • Primary provider unwilling to participate
  • Severe underlying lung disease (home O2, lung transplant; home vent (except OSA)
  • BMI > 50 kg/m2
  • NYHA class IV heart disease
  • Acute coronary syndrome within 30d
  • Cardiac arrest within 30d
  • Burns > 20% body surface
  • Severe chronic liver disease (C-P 12-15)
  • Previously randomized in CHILL trial
  • Enrolled in another intervention study
  • On ECMO
  • Missed ARDS window (72h)
  • Missed NMB window (48h)
  • Missed MV window (7d)