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BackgroundContinuous electroencephalography (cEEG), interpreted by an experienced neurologist, has been reported to be useful in predicting neurological outcome in adult patients post cardiac arrest. Amplitude-integrated electroencephalography (aEEG) is a type of quantitative EEG and is easily interpreted by a non-neurologist. A few studies have shown the effectiveness of aEEG in prognostication among adult patients post cardiac arrest. In this study, we hypothesized that the pattern of aEEG after return of spontaneous circulation (ROSC) could successfully categorize patients post cardiac arrest according to their expected neurological outcome.MethodsWe assessed the comatose survivors of out-of-hospital cardiac arrest who received targeted temperature management with midazolam-based sedation and were monitored with aEEG at our tertiary emergency care center from January 2013 to June 2017. We categorized the patients into categories 1 (C1) to 4 (C4). C1 included patients who regained continuous normal voltage (CNV) within 12 h post ROSC, C2 included those who recovered CNV 12–36 h post ROSC, C3 included those who did not recover CNV before 36 h post ROSC, and C4 included those who had burst suppression at any time post ROSC. We evaluated the outcomes of neurological function for each category at hospital discharge. A good outcome was defined as a cerebral performance category of 1 or 2.ResultsA total of 61 patients were assessed (median age, 60 years), among whom 42 (70%) had an initial shockable rhythm, and 52 (85%) had cardiac etiology. Of all 61 patients, 40 (66%) survived to hospital discharge and 27 (44%) had a good neurological outcome. Of 20 patients in C1, 19 (95%) had a good outcome, while the percentage dropped to 57% among C2 patients. No patients in C3 or C4 had a good outcome. Three patients could not be classified into any category.ConclusionsThe pattern of aEEG during the early post-cardiac-arrest period can successfully categorize patients according to their neurological prognoses and could be used as a potential guide to customize post-cardiac-arrest care for each patient.Electronic supplementary materialThe online version of this article (10.1186/s13054-018-2138-2) contains supplementary material, which is available to authorized users.

Aim: Patients with massive pulmonary embolism (PE) have poor outcomes and their management remains challenging. An interventional radiology (IVR)-computed tomography (CT) system available in our emergency room (ER) allows immediate access to CT and extracorporeal membrane oxygenation (ECMO) with safe cannulation under fluoroscopy. We aimed to determine if initial treatment in this ''hybrid ER" is helpful in patients with PE requiring extracorporeal cardiopulmonary resuscitation (ECPR). Methods: The records of patients transferred to our hybrid ER between September 2014 and December 2017 who required ECPR for PE were reviewed. Results: Nine consecutive patients (median age 50 [range 30-76] years) with PE requiring ECPR were identified in our hybrid ER. Five (55.6%) had at least one risk factor for PE. Six (66.7%) experienced an out-of-hospital cardiac arrest and 3 (33.3%) had a cardiac arrest in the hybrid ER. Right ventricular overload was detected on electrocardiography and bedside transthoracic echocardiography in all cases. The median pH, lactate, PaCO 2 , and HCO 3 values on arterial blood gas analysis in the hybrid ER were 7.01 (6.68-7.26), 14 (8-22) mmol l À1 , 44.7 (23.8-60.5) mmHg, and 10.4 (6.7-14.1), respectively. Four patients (44.4%) received monteplase for thrombolysis. No patient underwent surgical embolectomy. The median duration of ECMO was 69 (38-126) h. There were two ECMO-related bleeding complications. Eight patients (88.9%) survived and one died of post-resuscitation encephalopathy after weaning from ECMO. Conclusion:A hybrid ER may be useful for initial management of massive PE requiring ECPR and may help to improve outcomes.

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