Atrial cardiopathy and stroke mortality in the general population

Author:

Ahmad Muhammad I1ORCID,Singleton Matthew J2ORCID,Bhave Prashant D2,Kamel Hooman3ORCID,Soliman Elsayed Z24

Affiliation:

1. Department of Internal Medicine, Section on Hospital Medicine, Wake Forest School of Medicine, Winston-Salem, NC, USA

2. Department of Internal Medicine, Section on Cardiology, Wake Forest School of Medicine, Winston-Salem, NC, USA

3. Department of Neurology and Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY, USA

4. Epidemiological Cardiology Research Center (EPICARE), Department of Epidemiology and Prevention, Wake Forest School of Medicine, Winston-Salem, NC, USA

Abstract

Background Prior studies examining the link between atrial cardiopathy and stroke risk have focused mainly on non-fatal stroke. Aims To examine the association between atrial cardiopathy and stroke mortality. Methods This analysis included 8028 participants (60.0 ± 13.4 years, 51.9% women, 49.8% white) from the Third National Health and Nutrition Examination (NHANES III) Survey. Atrial cardiopathy was defined as abnormal deep terminal negativity of the P wave in V1 (DTNPV1 = negative p-wave in V1<−100 µv), an electrocardiographic marker of atrial cardiopathy. Stroke mortality was ascertained using the National Death Index over a median follow-up of 14 years. Results 2.95% ( n = 237) of the participants had atrial cardiopathy, and the prevalence was slightly higher in blacks (4%) versus whites (3%). During follow-up, stroke mortality was more common in those with (5.9%) than those without (2.7%) atrial cardiopathy; p = .004. In a multivariable adjusted model, atrial cardiopathy was associated with a 76% increased risk of stroke mortality (HR (95% CI): 1.76 (1.02–3.04)]. This association was stronger in non-whites than whites (HR (95% CI): 3.50 (1.74–7.03) vs. 0.98 (0.40–2.42), respectively; interaction p = 0.03). Among those with baseline atrial cardiopathy, the annualized stroke mortality rates/1000 participants across CHA2DS2-VASc scores of 0, 1, and ≥2 were 0.0, 2.2, and 7.8, respectively. Conclusions Atrial cardiopathy is associated with an increased risk of stroke mortality, especially among non-whites. Among those with atrial cardiopathy, the risk of stroke mortality exponentially increases as the CHA2DS2-VASc score becomes 2 or above. Randomized controlled trials are needed to assess the efficacy of anticoagulation in the prevention of ischemic stroke and thus, stroke mortality in the presence of atrial cardiopathy.

Publisher

SAGE Publications

Subject

Neurology

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