Prospective, single-center, single-arm, open, comparative, validation of a commercialized device, repeated measures accuracy study designed in accordance with the requirements of the ISO 81060-2:2018 AAMI/ESH/ISO Universal Standard for the clinical validation of automated non-invasive sphygmomanometers (Non-invasive sphygmomano-meters - Part 2: Clinical investigation of intermittent automated measurement, including Amendments 1 and 2)). The validation will be conducted with volunteers rather than necessarily with patients, and all measurements will be performed outside of the subjects' normal diagnosis or treatment.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
OTHER
Masking
NONE
Enrollment
100
All measurements will be performed by trained observers in line with the requirements of the ISO 81060-2:2018 AAMI/ESH/ISO Universal Standard (1), ensuring accuracy, consistency, and reproducibility. The investigation shall be performed in an isolated room under comfortable ambient temperature. * The cuff shall be applied on the bare arm with no compression proximal to the cuff. * The subject shall rest quietly for at least 10 minutes prior to the start of measurements. * The subject should avoid talking during the entire measurement procedure. * BP shall be measured on the subject's left arm at heart level. * A minimum of 5 minutes shall elapse prior to obtaining the first reference blood pressure measurement.
The study will assess compliance with the following validation criteria defined by the standard ISO 81060-2:2018: Criterion 1 - Group-level accuracy (paired-difference analysis). Criterion 2 - Subject-level accuracy
The study will assess compliance with the following validation criteria defined by the standard ISO 81060-2:2018 for SBP and DBP (in mmHg): Criterion 1 - Group-level accuracy (paired-difference analysis). For systolic blood pressure (SBP) and diastolic blood pressure (DBP) separately, the mean difference between the test device and the reference method (observer auscultation with a mercury sphygmomanometer) across all valid paired determinations shall be within ±5 mmHg, and the standard deviation (SD) of these differences shall be ≤ 8 mmHg. Criterion 2 - Subject-level accuracy For SBP and DBP, each subject's mean difference (test device - reference) shall be calculated from that subject's repeated paired determinations. The standard deviation of these subject-level means across all subjects shall comply with the requirements specified in Table 1 Averaged subject data acceptance in mmHg of ISO 81060-2:2018 (1) for SBP and DBP.
Time frame: Day 1
Agreement by Bland-Altman analysis
Calculation of the bias (average difference between test device and reference method) and the 95% limits of agreement (LoA) for systolic blood pressure (SBP) and diastolic blood pressure (DBP), overall and across the blood pressure range
Time frame: Day 1
Population characteristics- Age
Age (descriptive summary)
Time frame: Day 1
Population Characteristics - Sex
Sex (descriptive summaries)
Time frame: day 1
Population Characteristics- arm circumferences
arm circumferences (descriptive summaries)
Time frame: Day 1
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Population Characteristics- baseline blood pressure categories
Normotensive/hypertensive ranges for both systolic and diastolic pressures
Time frame: Day 1
Observser agreement
percentage of paired measurements (within +/- 4 mmHg)
Time frame: Day 1