Abstract
Background: Blood pressure (BP) is obligatorily measured each time a patient visits Emergency room (ER) or
is admitted in ICU/CCU. Accuracy of blood pressure measurement in clinical settings is the key to appropriate diagnosis of hypertension in a patient. It remains elusive, however, whether oscillatory automated BP
measurement yields lower values than auscultatory manual methods. It has been witnessed that both the
devices give different readings of the same patient at one point in time. This study helped to determine the
accurate or more reliable of the two devices.
Methods: A double-blind randomized clinical cross over trial was carried out at Ziauddin University Hospital
from February 2018 to June 2018. Sample of 100 was taken through random sampling. The device used in this
study was the Dinamap Procare 100. SPSS 20 was used for data entry and analysis.
Results: The mean of difference in systolic manual Blood Pressure (sMBP) and systolic automated Blood
Pressure (sABP) was estimated to be 15.62 with a standard deviation of ± 8.57, while the mean of difference
in diastolic MBP and ABP was 12.6 with a standard deviation of ± 24.7. Both systolic and diastolic readings
were far low by automated devices in comparison to Manual devices.
Conclusion: The results of this study suggested that automated method in measurement of BP frequently
shows lower BP. This can influence diagnosis of hypertension and management of certain medical conditions.
Aisha Khan Jadoon, Fasiha Sohail, Arzu Jadoon, Sumera Nawaz Qabulio. (2019) Inaccuracy of Noninvasive Blood Pressure Monitor Devices, Do We Have An Alternative?, The Pakistan Journal of Medicine and Dentistry, Volume 8, Issue-1.
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