Indices and repeatability tests of cardiovascular function performed on the arterial distension waveform - Case study: Angiography intervention

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2013

Autores

Almeida, VG (Autor) Outra; Borba, J (Autor) Outra; Pereira, HC (Autor) Outra; Pereira, T (Autor) Outra; Cardoso, J (Autor) Outra; Correia, C (Autor) FCUP

Ata de Conferência Internacional

Título: BIOSIGNALS 2013 - Proceedings of the International Conference on Bio-Inspired Systems and Signal Processing

Páginas: 138-144

International Conference on Bio-Inspired Systems and Signal Processing, BIOSIGNALS 2013

Barcelona, 11 February 2013 through 14 February 2013

Indexação

Scopus - 0 Citações

Outras Informações

ID Authenticus: P-008-B0J

Abstract (EN): The arterial distension waveform (ADW) analysis is a reliable technique for cardiovascular function assessment. The purpose of this study was to perform the pre-clinical validation of a non-invasive prototype focusing the repeatability tests and cross-relationships between different subject groups. The evaluation focused parameters retrieved from ADW: systolic peak (SP), dicrotic notch (DN), RP (reflection point) and Augmentation index (AI). One hundred and fifty one subjects (61 men and 90 women, aged between 18 and 80 years) were assigned into four groups based on their clinical characteristics. Database is constituted by healthy, hypertensive and subjects that suffer from stenosis. The cross-correlations analysis between groups allows establishing time parameterizations for each one. Furthermore, the differences between the left and right carotid artery suggest intrinsically variability for each one of the subjects. The coefficient of variation (CV) mean value obtained for all measurements was 18.58%, maximum rate of 33.7% and minimum 8.9%. The stenosis case study demonstrate the potentialities of the use of this prototype in the detection of cardiac anomalies by the monitoring of state alterations through RP, SP and DN time parameterizations with visible changes in RP and SP values (after carotid intervention RP appears later than SP, in opposition with values before intervention), while DN associated time changes little. The tests performed on the ADW showed that is possible the reliable measurement of morphological patterns changes.

Idioma: Inglês

Tipo (Avaliação Docente): Científica