Blood pressure measurement is clinically important. The manual auscultation method is retained as the current "gold standard". This study was designed to evaluate the variability of repeat measurements by the same operator, and between operators, when evaluating the same data.Ten young volunteer subjects with no known cardiovascular disease were studied. Korotkoff sounds were recorded from a standard stethoscope head connected to an acoustic microphone, and the audio sounds recorded during blood pressure measurements with cuff deflation, while subjects sat quietly on a chair. All recordings were replayed blindly and independently, to two trained operators. The operators identified systolic and diastolic blood pressure (SBP and DBP) without knowledge of the subject. After all recordings had been analysed once, the analysis was repeated.SBP rangedfrom 95 to 112 mmHg, and DBP from 58 to 78 mmHg. The difference in repeat listening measurements for each observer was -0.8 ±3.3 and -0.5 ±2.1 mmHg for SBP, and -0.4 ±2.3 and 0.4 ± 1.7 mmHg for DBP. The difference between the two operators for each measurement was 0.7 ± 1.6 and 0.9 ± 3.6 mmHg for SBP, and -1.7 ± 2.3 and -1.0 ± 2.0 mmHg for DBP. We have shown similar variability between operators as between repeat measurements on identical recordings.
|Title of host publication||2019 Computing in Cardiology, CinC 2019|
|Publisher||IEEE Computer Society|
|Number of pages||4|
|Publication status||Published - 1 Sep 2019|
|Event||2019 Computing in Cardiology - Singapore, Singapore|
Duration: 8 Sep 2019 → 11 Sep 2019
|Name||Computing in Cardiology|
|Conference||2019 Computing in Cardiology|
|Abbreviated title||CinC 2019|
|Period||8/09/19 → 11/09/19|
Bibliographical noteSince volume 33 (2006), CinC has been an open-access publication, in which copyright in each article is held by its authors, who grant permission to copy and redistribute their work with attribution, under the terms of the Creative Commons Attribution License.
ASJC Scopus subject areas
- Computer Science(all)
- Cardiology and Cardiovascular Medicine