Prolonged P wave duration predicts stroke mortality among type 2 diabetic patients with prevalent non-major macrovascular disease

BMC Cardiovascular Disorders

Tapani Rönnemaa¹  Juhani Airaksinen¹  Auni Juutilainen²  Seppo Lehto²  Markku Laakso²  Teemu Vepsäläinen¹ 

[1] Department of Medicine, University of Turku and Turku University Hospital, Kiinamyllynkatu 10, 20520 Turku, Finland;Department of Medicine, University of Eastern Finland and Kuopio University Hospital, Puijonlaaksontie 2, 70211 Kuopio, Finland

关键词: Stroke mortality;    P wave duration;    ECG;    Cardiovascular disease;    Type 2 diabetes;   

Others  :  1088675
DOI  :  10.1186/1471-2261-14-168

 received in 2014-02-27, accepted in 2014-11-18,  发布年份 2014

【 摘 要 】

Background

Prolonged P wave duration is a marker of delayed inter-atrial conduction which may predict cardiovascular disease (CVD). Type 2 diabetes is a risk factor for all atherosclerotic manifestations including stroke. We evaluated the prognostic significance of prolonged P wave duration among middle-aged Finnish type 2 diabetes patients with and without prevalent non-major macrovascular disease (PNMMVD) with respect to total and stroke mortality.

Methods

We followed up for 18 years 739 type 2 diabetic patients without previous major CVD event at baseline. Participants were stratified according to P wave duration (<114 or ≥114 ms) and PNMMVD (i.e. coronary heart disease defined as ischaemic ECG changes and typical symptoms of angina pectoris, or claudication; yes or no). The Cox proportional hazards model was used to estimate the joint association between P wave duration, PNMMVD and the mortality risk.

Results

During the follow-up, 509 patients died, and 59 of them died from stroke. Those who had prolonged P wave duration had 2.45 (95% confidence interval: 1.11-5.37) increased stroke mortality among PNMMVD patients. In patients without PNMMVD, there was no relationship between P wave duration and stroke mortality.

Conclusions

As an easily measurable factor P wave duration merits further studies with higher number of patients to evaluate its importance in the estimation of stroke risk in type 2 diabetic patients with PNMMVD.

【 授权许可】

   
2014 Vepsäläinen et al.; licensee BioMed Central Ltd.

【 图 表 】

Figure 1.

Figure 2.

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