BACKGROUND: Targeted temperature management (TTM) in comatose survivors of out-of-hospital cardiac arrest has been associated with improved neurological outcomes. However, the optimal temperature target for TTM remains unclear. OBJECTIVES: To compare a TTM protocol targeted at 34-36 °C with a protocol targeted at 32-34 °C with reference to both clinical outcomes and acute complications. METHODS: We analyzed a prospective registry of consecutive out-of-hospital cardiac arrest survivors who underwent TTM. We compared patients on a TTM protocol targeted at 34-36 °C (n = 59) with a historical cohort of patients treated at 32-34 °C (n = 116) according to the following parameters: six-month survival, cerebral performance category (CPC) scores, and acute complications. RESULTS: Survival and favorable neurological outcomes (CPC ≤ 2) at six months were 56% and 49%, respectively, in the higher target temperature group vs. 66% and 61%, respectively, in the lower target temperature group (p = 0.18 and 0.13). Acute clinical complications occurred in 1.5% vs. 12% of patients treated at the higher vs. the lower temperature range (p = 0.02). CONCLUSIONS: Patients treated with TTM at 34-36 °C had similar mid-term survival and neurological outcomes as patients treated with TTM at 32-34 °C. However, patients treated within the higher temperature range had fewer acute complications.

3rd Faculty of Medicine Charles University Prague Czech Republic

Department of Cardiology Institute for Clinical and Experimental Medicine Videnska 1958 9 140 21 Prague Czech Republic

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