SciELO - Scientific Electronic Library Online

 
vol.18 número1-2Survival and mental and physical condition of patients with isquemic heart disease discharged from a third level intensive care unit índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

  • Não possue artigos similaresSimilares em SciELO

Compartilhar


Revista Costarricense de Cardiología

versão impressa ISSN 1409-4142

Resumo

MENDEZ, Laura et al. Physical-mathematical assessment methodology ph dioxide pressure and arterial and venous carbon in the intensive care unit. Rev. costarric. cardiol [online]. 2016, vol.18, n.1-2, pp.5-11. ISSN 1409-4142.

Introduction:

Cardiac dynamics has been characterized from the theory of dynamical systems and fractal geometry, allowing to generate methodologies with clinical application. Objective: from dynamic systems, a methodology for evaluating the arterial and venous pH and dioxide of carbon pressures for patient in Intensive Care Unit will be developed.

Materials and Methods:

10 patients with various pathologies were selected from Post-surgical Intensive Care Unit of the Central Military Hospital, recording arterial and venous pH and dioxide of carbon pressures of during its stay; attractors were built subsequently, determining the type of path and setting the maximum and minimum values of these variables on the delay map.

Results:

Chaotic behavior of the variables evaluated was found, finding maximum and minimum values of 7,01 and 7,59 for arterial pH values, 6,97 and 7,53 for venous pH, 14,40 and 73,70 for arterial dioxide of carbon pressure, and 19,20 and 97,90 for venous dioxide of carbon pressure.

Conclusions:

The evaluation of the maximum and minimum values of the attractor on the delay map is a new method, objective and reproducible for the mathematical evaluation of each of the variables studied, useful for monitoring patients in Intensive Care Unit.

Palavras-chave : arterial pH; venous pH; arterial carbon dioxide pressure; venous pressure of carbon dioxide; chaotic attractor; dynamical systems; Intensive Care Unit.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )