The value of indirect blood pressure in patients with atrial fibrillation was studied. Three methods were compared; single measurement, mean of three measurements and mean value of automatic measurement during 2-hours and whole day. The study comprised 13 patients; 7 men and 6 women aged 52-77 (mean 62.8 congruent to 6.6) hospitalized for cardiac diseases. The measurement were done using the mercury sphygmomanometer and auscultatory Korotkoff technique and automatic blood pressure monitoring (Acutracker--Medilog Oxford). The investigations showed that systolic and diastolic blood pressure during 24-hours monitoring were lower than single or repeated three measurements. The highest correlation coefficient to 24-hours recording was found for the mean value of 2-hours recording. It seems that blood pressure measurement in patients with atrial fibrillation (3-times in few minutes intervals) should be verified by using prolonged automatic recording.
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