PT  - JOURNAL ARTICLE
AU  - Guo, Jiahuan
AU  - Li, Zixiao
AU  - Gu, Hongqiu
AU  - Yang, Kaixuan
AU  - Liu, Yanfang
AU  - Lu, Jingjing
AU  - Wang, Dandan
AU  - Jia, Jiaokun
AU  - Zhang, Jia
AU  - Wang, Yongjun
AU  - Zhao, Xingquan
TI  - Prevalence, risk factors and prognostic value of atrial fibrillation detected after stroke after haemorrhagic versus ischaemic stroke
AID  - 10.1136/svn-2023-002974
DP  - 2024 Dec 01
TA  - Stroke and Vascular Neurology
PG  - 652--659
VI  - 9
IP  - 6
4099  - http://svn.bmj.com/content/9/6/652.short
4100  - http://svn.bmj.com/content/9/6/652.full
SO  - Stroke Vasc Neurol2024 Dec 01; 9
AB  - Background and objectives Prior evidence suggests that atrial fibrillation detected after stroke (AFDAS) is distinct from known atrial fibrillation (KAF), with particular clinical characteristics and impacts on outcomes in ischaemic stroke. However, the results remained inconsistent in ischaemic stroke, and the role of AFDAS in haemorrhagic stroke remains unclear. Therefore, we aimed to estimate the prevalence, risk factors and prognostic value of AFDAS in haemorrhagic stroke in comparison with ischaemic stroke.Methods This was a multicentre cohort study. Patients who had an ischaemic and haemorrhagic stroke hospitalised in the Chinese Stroke Center Alliance hospitals were enrolled and classified as AFDAS, KAF or sinus rhythm (SR) based on heart rhythm. Univariate and multivariate logistic regression analyses were used to assess the prevalence, characteristics, risk factors and outcomes of AFDAS, KAF and SR in different stroke subtypes.Results A total of 913 163 patients, including 818 799 with ischaemic stroke, 83 450 with intracerebral haemorrhage (ICH) and 10 914 with subarachnoid haemorrhage (SAH), were enrolled. AFDAS was the most common in ischaemic stroke. There were differences in the risk factor profile between stroke subtypes; older age is a common independent risk factor shared by ischaemic stroke (OR 1.06, 95% CI 1.06 to 1.06), ICH (OR 1.08, 95% CI 1.07 to 1.09) and SAH (OR 1.07, 95% CI 1.05 to 1.10). Similar to KAF, AFDAS was associated with an increased risk of in-hospital mortality compared with SR in both ischaemic stroke (OR 2.23, 95% CI 1.94 to 2.56) and ICH (OR 2.84, 95% CI 1.84 to 4.38).Discussion There are differences in the prevalence, characteristics and risk factors for AFDAS and KAF in different stroke subtypes. AFDAS was associated with an increased risk of mortality compared with SR in both ischaemic stroke and ICH. Rhythm monitoring and risk factor modification after both ischaemic and haemorrhagic stroke are essential in clinical practice. More emphasis and appropriate treatment should be given to AFDAS.Data are available upon reasonable request. The data that support the findings of this study are available from the corresponding author upon reasonable request.