The EMCOOLs Surface Cooling System for Fever Control In Neurocritical Care Patients: A Pilot Study

Abstract Objectives Fever occurs in up to 50% of critically-ill patients with acute neurological injury. Small temperature elevations have been correlated with increased morbidity and mortality in this patient population. We sought to evaluate a novel single-use surface cooling system for the treatment of fever in patients with acute brain injury. Patients and Methods We conducted a retrospective analysis of a prospective product evaluation using the EMCOOLS Flex.Pad™ system for acute fever (≥38.3 °C) in our 16-bed neuro-ICU. Four refrigerated pads (−18 °C) were applied to the chest, back, and anterior thighs. Core temperature (bladder) was continuously recorded over 4 h, and the highest Bedside Shivering Assessment Scale (BSAS) score was recorded hourly. Results Twelve subjects were included in the analysis. Mean age was 55 ± 9 years, 9 patients were men, and mean weight was 85 ± 12 kg. The most common primary diagnoses were subarachnoid (N = 5) and intracerebral (N = 4) hemorrhage. Application of the EMCOOLS system resulted in a linear 1.3 ± 0.6 °C drop (T 0avg  = 38.9 ⁰C, T 90avg  = 37.6 ⁰C, P = 0.0032) in mean temperature over 90 min, followed by a plateau with only one subject rebounding to >38 °C within 4 h. Normothermia ( coma  = 1.74 °C vs ΔT awake  = 0.74 °C hr −1 , P  = 0.067). There was no observed skin irritation upon removal of the device for any patients. Conclusion The EMCOOLs system is a well-tolerated, safe and effective short-term intervention for control of fever in neurological patients. Future studies are needed to compare efficacy of the EMCOOLs to other devices and interventions.