One-year mortality after acute stroke: a prospective cohort study from a comprehensive stroke care centre, Kerala, India

Author:

Nambiar Vivek,Raj Manu,Vasudevan Damodaran,Bhaskaran Renjitha,Sudevan RemyaORCID

Abstract

ObjectivesThe primary objective was to report the 1-year all-cause mortality among patients with stroke. The secondary objectives were (1) to report the mortality stratified by type of stroke and sex and (2) to report predictors of 1-year mortality among patients with stroke.DesignA prospective cohort study.SettingInstitutional–stroke care unit of a tertiary care hospitalParticipantsPatients who were treated in the study institution during 2016–2020 for acute stroke and were followed up for a period of 1 year after stroke in the same institution.Main outcome measuresThe main outcome measures were the mortality proportion of any stroke and first ever stroke cohorts at select time points, including in-hospital stay, along with 2 weeks, 2 months, 6 months and 1 year after index stroke. The secondary outcomes were (1) mortality proportions stratified by sex and type of stroke and (2) predictors of 1-year mortality for any stroke and first ever stroke.ResultsWe recruited a total of 1336 patients. The mean age of participants was 61.6 years (13.5 years). The mortality figures for 2 weeks, 2 months, 6 months and 12 months after discharge were 79 (5.9%), 88 (6.7%), 101 (7.6%) and 114 (8.5%), respectively, in the full cohort. The in-hospital mortality was 45 (3.4%). The adjusted analysis revealed 3 predictors for 1-year mortality after first ever stroke—age, pre-treatment National Institutes of Health Stroke Scale (NIHSS) score and Modified Rankin Scale (mRS) score at baseline. The same for the full cohort had only two predictors—age and pre-treatment NIHSS score.ConclusionMortality of stroke at 1-year follow-up in the study population is low in comparison to several studies published earlier. The predictors of 1-year mortality after stroke included age, NIHSS score at baseline and mRS score at baseline.

Publisher

BMJ

Subject

General Medicine

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