Are Automated Blood Pressure Apparatus Reliable? Automated Versus Manual Measurement of Blood Pressure
Journal Title: Journal of Clinical and Diagnostic Research - Year 2018, Vol 12, Issue 8
Abstract
ABSTRACT Introduction: With hypertension becoming a global burden, it is necessary to validate the Blood Pressure (BP) recordings, used to screen and follow-up patients for hypertension. Since three different devices (mercury manometer, aneroid meter, and digital) are commonly used throughout the world, a study was proposed to compare the recordings of the three devices. Aim: To evaluate the validity of aneroid and digital BP monitors as compared to mercury manometer. Materials and Methods: BP was measured in 240 healthy subjects of both sex (Male=127, Female=113) using mercury manometer, aneroid and digital BP monitor from the same arm consecutively with five minutes interval between each recording. The data were analysed using SPSS 21, Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP) readings of aneroid and digital monitors were compared with mercury manometer. British Hypertension Society (BHS) protocol, Association for the Advancement of Medical Instrumentation (AAMI) standards and Bland Altman scatter plots were used to validate the aneroid and digital BP monitors. Results: The difference in SBP measured using mercury manometer and aneroid meter was 0.675±7.12 mmHg and mercury manometer and digital monitor was 1.65±11.08 mmHg. The difference in DBP using mercury manometer and aneroid meter was 1.75±6.3 mmHg and mercury manometer and digital was 2.76±8.8 mmHg. While aneroid meter satisfied the AAMI criteria, digital monitor did not. The BHS grade for aneroid meter was C (poor) and digital D (very poor). According to Bland-Altman plot, the bias in SBP for aneroid was minimal with 0.675 (-13.28-14.63), for digital -1.41 (-21.66-18.84) and in DBP for aneroid was 1.75 (-10.6-14.1), for digital was the highest with 2.76 (-14.47-20.01). Conclusion: BP measured using aneroid and digital monitors varied significantly from the mercury manometer and showed higher levels of inaccuracy and hence should be used with caution in clinical setting.
Authors and Affiliations
K Madhan Srinivasan, K Senthil Kumar, I Saraswathi, A Lokeshwar Raaju, B Vishwanatha Rao
Keywords
Related Articles
- EP ID EP523134
- DOI 10.7860/JCDR/2018/34993.11868
- Views 56
- Downloads 0
Effect of Deep Breathing on Cardiac Axis of Young Normal Subjects in Various Postures- A Pilot Study
ABSTRACT Introduction: Cardiac axis is altered in many physiological and pathological states. Hence its measurement is important. Position and movements of diaphragm determine the position of heart because the pericardiu...
Anatomical Configuration of Roots and Canal Morphology of Primary Mandibular First Molars: A CBCT Study
Introduction: Root and canal morphology plays a vital role in improving the success rate of the endodontic treatment in primary teeth. The morphology of root canals in primary teeth leads to complications during pulp the...
Comparative Analysis of Salivary Alkaline Phosphatase in Post menopausal Women with and without Periodontitis
Introduction: Alkaline phosphatase is an intracellular destruction enzyme in the periodontium, and it takes part in the normal turnover of the periodontal ligament, alveolar bone, and root cementum formation and maintena...
Management of Double Lip
Images in Medicine
Unilateral Absence of Ethmoid Sinus and Nasal Turbinates: A Rare Case Report
A variety of anatomical variation of paranasal sinus and nasal turbinates exist, as its development is a complex and long standing process. Computerized Tomography (CT) of the paranasal sinuses is a very valuable tool in...