Objective
Systolic Blood pressure variability (SBPV) is a novel indicator of stroke. P wave dispersion (PWD) is a well known parameter obtained from routine ECG, which is an indicator of interatrial and intraatrial conduction abnormalities. Higher PWD values is linked to higher risk of atrial fibrillation in many prospective studies. The aim of our study is to measure PWD from routine ECG tests of hypertensive patients and to determine its relation with SBPV.
Methods
This study included 34 hypertension patients who are on therapy with drugs other than β blockers and without a history of arrythmia. Patients are asked to write down their BP measurements on a chart 2 times daily, during a 7 days period. A routine ECG with 50 mm/s speed is recorded at the first visit and PWD is calculated for each patient. SBPV is calculated as the difference between maximum and minimum SBP values derived from blood pressure charts which are filled by patients.The relationship between SBPV and PWD are tested with Spearman’s correlation analysis.
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