Digital (DU-150) Sphygmomanometer: Total Reprodusibility Standard and The Influence of Blood Pressure Measurement on Sample Arm Selection

Abstract

There are three types of Sphygmomanometer (Hg, aneroid, digital), but only digital types that cannot be standarized directly are related to the accurancy and precision of the standard institutions. Other than that, the standard only contains calibration, tune-up, and retune-up but not yet familiar with reproducibility standards and sample arm selection. In the case of the distance of the heart to the left arm for adults is shorter about 20 cm compared to the distance from the heart to the right arm. In this study, the DU-150 type digital sphygmomanometer is calibrated wth standarized SPY aneroids (type 476226). The reproducibility of the sphygmomanometer is determined according to the ANOVA standard involving 3 people measuring, 10 measuring samples, and each sample measured 2 times and obtained a total reprucibility value of 93%. That is, this tool is feasible to test effect of blood pressure on sample arm selection. Sample arm selection test is carried out on 24 samples (= 48 arms) in various ages of female and male. The results showed that the value of blood pressure on the left arm was different from the right arm for both systole and diastole. The value of blood pressure in a person tends to be greater on the right arm for non-right-handed people, and on the left arm for children and those who are left-handed. Concluded that the DU-150 type digital sphygmomanometer used has met the standards of accurancy, precision, and total reproducibility. In general, the value of blood pressure in the arm to the heart but is more sensitive to the effective diameter of the artery by the habit of physical activity and the events of blood flow based on Pouiseuille law and Continuity law.