Efectos cardiovasculares de la contrapulsación aórtica sobre la actividad del sistema nervioso autónomo en un modelo experimental de insuficiencia cardiaca

Authors

  • Juan Manuel Camus
  • Marcelo Raúl Risk
  • Eduardo de Forteza
  • José Ramírez Agustín
  • Edmundo Ignacio Cabrera Fischer

Abstract

 

Intra-aortic counterpulsation is a widely used circulatory support technique in patients with heart failure refractory to pharmacological treatment. This paper presents the effects of the autonomic nervous system activity on cardiovascular function during conventional intraaortic counterpulsation in an animal model of acute heart failure. Recordings of 6 minutes of electrocardiographic, aortic pressure and pulmonary arterial flow signals were stored before and during mechanical circulatory assistance, before and after heart failure induction by a high dose of halothane. Heart rate, mean aortic pressure, mean pulmonary flow variability and baroreflex sensitivity were analyzed off-line, in both time and frequency domain. Non significant differences were caused by mechanical assistance by the intra-aortic counterpulsation, this lack of changes suggest that this technique is able to improve the hemodynamic changes induced by heart failure in sheep, without significant changes in aortic pressure and heart rate variability and baroreflex control.

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Published

2005-05-24

How to Cite

Camus, J. M., Risk, M. R., de Forteza, E., Ramírez Agustín, J., & Cabrera Fischer, E. I. (2005). Efectos cardiovasculares de la contrapulsación aórtica sobre la actividad del sistema nervioso autónomo en un modelo experimental de insuficiencia cardiaca. Revista Mexicana De Ingenieria Biomedica, 26(2), 68–74. Retrieved from http://rmib.mx/index.php/rmib/article/view/251

Issue

Section

Research Articles

Dimensions Citation