Model-based assessment of baroreflex and cardiopulmonary couplings during graded head-up tilt

Autor(es)

Porta, Alberto ^[1] ; Bassani, Tito ^{[1, 2]} ; Bari, Vlasta ^[1] ; Tobaldini, Eleonora ^[3] ; Takahashi, Anielle C. M. ^[4] ; Catai, Aparecida M. ^[4] ; Montano, Nicola ^[3]

Afiliação do(s) autor(es)

^[1] Univ Milan, Dept Technol Hlth, Galeazzi Orthoped Inst, Milan - Italy

^[2] Polytech Univ Milan, Dept Bioengn, Milan - Italy

^[3] Univ Milan, Dept Clin Sci, L Sacco Hosp, Milan - Italy

^[4] Univ Fed Sao Carlos, Dept Physiotherapy, BR-13560 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: COMPUTERS IN BIOLOGY AND MEDICINE; v. 42, n. 3, SI, p. 298-305, MAR 2012.
• Citações Web of Science: 48

Resumo

We propose a multivariate dynamical adjustment (MDA) modeling approach to assess the strength of baroreflex and cardiopulmonary couplings from spontaneous cardiovascular variabilities. Open loop MDA (OLMDA) and closed loop MDA (CLMDA) models were compared. The coupling strength was assessed during progressive sympathetic activation induced by graded head-up tilt. Both OLMDA and CLMDA models suggested that baroreflex coupling progressively increased with tilt table inclination. Only CLMDA model indicated that cardiopulmonary coupling due to the direct link from respiration to heart period gradually decreased with tilt table angles, while that due to the indirect link mediated by systolic arterial pressure progressively increased. (C) 2011 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 06/52860-0 - Efeito do treinamento de forca excentrica na modulacao da frequencia cardiaca e nas respostas da eletromiografia durante contracoes isometricas.
• Beneficiário: Anielle Cristhine de Medeiros Takahashi
• Modalidade de apoio: Bolsas no Brasil - Doutorado