Comparison of Blood Pressure Measurement Results from Two Different Regions (Upper Arm and Ankle).

Background: This study was conducted to determine the clinical concordance of non-invasive blood pressure (NIBP) measurements from the upper arm and ankle and to determine whether there is a difference between them.

Methods: A prospective and cross-sectional research design was used in this study. The study population included 106 patients hospitalized in the surgical clinics of a training and research hospital. Non-invasive blood pressure measurements were performed from both upper arms and ankles in the supine position. In the data analysis, ANOVA and the Bland-Altman plot were employed.

Results: Based on the results of NIBP measurements from the arm and ankle, the differences between diastolic blood pressure (DBP) and mean blood pressure (MBP) were acceptable and within the limits of concordance. The difference between the mean systolic blood pressure (SBP) was found to be significantly different and outside the limits of concordance. The difference between the mean SBP measured from the ankle and the upper arm was determined to be 18 mmHg.

Conclusion: It was determined that the results of SBP measured from the ankle were significantly higher and outside the limits of concordance compared to the upper arm, while the results of DBP and MBP measurements were within acceptable limits.