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Targeted temperature management in cardiac arrest patients with a non-shockable rhythm: A national perspective.

ABSTRACT: INTRODUCTION:Retrospective studies have shown conflicting benefit of utilizing targeted temperature management (TTM) in cardiac arrest (CA) patients with a non-shockable rhythm and presently there is only one randomized trial in this realm. We sought to determine trends and outcomes of TTM utilization in these patients from a large nationally representative United States population database. METHODS AND RESULTS:Data were derived from National Inpatient Sample (NIS) from January 2006 to December 2013. All patients were identified using the International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) codes. Patients with evidence of shockable rhythm (ventricular tachycardia, ventricular flutter and ventricular fibrillation) were excluded. Trends in TTM utilization and mortality were assessed over our study period. Various outcomes were measured in patients receiving TTM and no TTM in unmatched and propensity matched cohorts. Logistic regression analysis was done to determine predictors of mortality. A total of 1,185,479 CA patients were identified in whom cause of arrest was a non-shockable rhythm. Overall, there was a steady increase in TTM utilization over our study period. In propensity-matched groups, mortality was higher in patients in whom TTM was utilized compared to non-TTM group (72.9% vs 68.7%, P < .01). In adjusted analysis, TTM remains an independent predictor of increased mortality in our group. Mortality remained high with TTM utilization regardless of location of CA. CONCLUSIONS:TTM utilization was associated with increased mortality in CA patients with a non-shockable rhythm. These findings merit further confirmation in a large randomized trial before application into clinical practice.

SUBMITTER: Khan MZ

PROVIDER: S-EPMC7457429 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:BackgroundLittle is known about the effectiveness of surface cooling (SC) and endovascular cooling (EC) on the outcome of out-of-hospital cardiac arrest (OHCA) patients receiving target temperature management (TTM) according to their initial rhythm.MethodsWe retrospectively analysed data from the Japanese Association for Acute Medicine Out-of-Hospital Cardiac Arrest registry, a multicentre, prospective nationwide database in Japan. For our analysis, OHCA patients aged ≥ 18 years who were treated with TTM between June 2014 and December 2017 were included. The primary outcome was 30-day survival with favourable neurological outcome defined as a Glasgow-Pittsburgh cerebral performance category score of 1 or 2. Cooling methods were divided into the following groups: SC (ice packs, fans, air blankets, and surface gel pads) and EC (endovascular catheters and any dialysis technique). We investigated the efficacy of the two categories of cooling methods in two different patient groups divided according to their initially documented rhythm at the scene (shockable or non-shockable) using multivariable logistic regression analysis and propensity score analysis with inverse probability weighting (IPW).ResultsIn the final analysis, 1082 patients were included. Of these, 513 (47.4%) had an initial shockable rhythm and 569 (52.6%) had an initial non-shockable rhythm. The proportion of patients with favourable neurological outcomes in SC and EC was 59.9% vs. 58.3% (264/441 vs. 42/72), and 11.8% (58/490) vs. 21.5% (17/79) in the initial shockable patients and the initial non-shockable patients, respectively. In the multivariable logistic regression analysis, differences between the two cooling methods were not observed among the initial shockable patients (adjusted odd ratio [AOR] 1.51, 95% CI 0.76-3.03), while EC was associated with better neurological outcome among the initial non-shockable patients (AOR 2.21, 95% CI 1.19-4.11). This association was constant in propensity score analysis with IPW (OR 1.40, 95% CI 0.83-2.36; OR 1.87, 95% CI 1.01-3.47 among the initial shockable and non-shockable patients, respectively).ConclusionWe suggested that the use of EC was associated with better neurological outcomes in OHCA patients with initial non-shockable rhythm, but not in those with initial shockable rhythm. A TTM implementation strategy based on initial rhythm may be important.

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Targeted temperature management in cardiac arrest patients with a non-shockable rhythm: A national perspective.

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