Etiological Classification of Stroke in Patients with Chagas Disease Using TOAST, Causative Classification System TOAST, and ASCOD Phenotyping.

BACKGROUND: Cardioembolism is considered a major pathophysiological mechanism in patients with ischemic stroke (IS) and Chagas disease (CD). However, a previous study reported that other stroke subtypes are present in more than 40% of CD patients according to the TOAST classification. Therefore, the aim of our study was to evaluate the etiologic classification of stroke in patients with CD using the Causative Classification System (CCS), the ASCOD, and the TOAST classifications in a prospective cohort of patients. METHODS: Patients evaluated in our outpatient clinic from 2012 to 2015 with IS and CD were included and underwent full investigation for stroke etiology. TOAST, CCS TOAST, and the ASCOD classifications were compared. FINDINGS: We Included 32 patients (18 men; mean age 62.7 +/-10.1 years). A total of 93.8% had at least 1 vascular risk factor; the most frequent was hypertension (87.5%). According to TOAST, we defined 87.5% as having cardioembolic stroke, being 9.4% as large-artery atherosclerotic (LAA) and 3.1% as undetermined cause. Using the CCS TOAST, 62.5% were classified as cardioaortic embolism evident and 15.6% as possible, 6.3% as small artery occlusion evident and 3.1% as probable, and 12.5% as LAA evident. When ASCOD phenotyping was applied, atherosclerosis was present in 50.1% of patients (A1 = 6.3%, A3 = 43.8%), cardiac pathology in 84.4% (C1 = 62.5%, C2 = 15.6%, C3 = 6.3%), and small-vessel disease in 66% (S1 = 9.4%, S2 = 3.1%, S3 = 3.1%). FINDINGS: In conclusion, the use of the CCS and the ASCOD phenotyping in patients with CD confirmed a high frequency of cardioembolic IS but also showed that other etiologies are prevalent, such as large-artery atherosclerosis and small-vessel occlusion.

Clinical features associated with early hospital arrival after acute intracerebral hemorrhage: challenges for new trials.

BACKGROUND: Early hospital admission followed by correct diagnosis with minimum delay is a prerequisite for successful new interventions in acute intracerebral hemorrhage (ICH). The aim of this study was to evaluate clinical features associated with early hospital arrival in ICH patients and their influence on the outcome. METHODS: Data from all patients arriving within 24 h of the ICH onset were prospectively collected at 2 stroke centers in São Paulo, Brazil. The cutoff of 3 h was chosen to select 2 groups: 0-3 h (early) and >3-24 h (late). RESULTS: We identified 91 ICH patients (mean age 57.9 years, 62% men, 63% white) admitted within the first 24 h of symptom onset between March 2004 and April 2005. Systolic blood pressure, mean arterial pressure and pulse pressure were significantly higher in patients arriving within 3 h. Patients that arrived early also had a higher NIHSS score (p = 0.003), a lower Glasgow Coma Score (p = 0.001) and presence of intraventricular hemorrhage (p = 0.02). Lower ICH scores were more frequent in those that arrived late. Fourteen patients showed hematoma enlargement and the majority of them (n = 13) were admitted within the first 3 h from symptom onset (p = 0.01). Patients who arrived within the 3-hour window had a higher 30-day mortality (p = 0.0008) and a worse Rankin score after 6 months (p = 0.001). CONCLUSIONS: Treatment decisions in acute ICH may need to establish new combined approaches to maximize the number of eligible patients for early therapy considering the interactions between independent outcome predictors presented at early onset.