Función respiratoria en la senectud

Aging generates four important changes in the structure and function of the respiratory system. There is a reduction in the elastic recoil of the lung causing "senile emphysema", a condition characterized by reduction in the alveolar surface area without alveolar destruction, which is asso...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autor principal:	Oyarzún G,Manuel
Lenguaje:	Spanish / Castilian
Publicado:	Sociedad Médica de Santiago 2009
Materias:	Aged Respiratory function tests Ventilation-perfusion ratio
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872009000300014
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0034-98872009000300014
record_format	dspace
spelling	oai:scielo:S0034-988720090003000142009-06-15Función respiratoria en la senectudOyarzún G,Manuel Aged Respiratory function tests Ventilation-perfusion ratio Aging generates four important changes in the structure and function of the respiratory system. There is a reduction in the elastic recoil of the lung causing "senile emphysema", a condition characterized by reduction in the alveolar surface area without alveolar destruction, which is associated with hyperinflation, increased lung compliance and reduction in alveolar-capillary diffusing capacity. There is a decrease in the compliance of the chest watt, due to calcification of its articulations, dorsal kyphosis and "barrel chest". There is a decrease in the strength of respiratory muscles which correlates with cardiac Index, nutritional status and hyperinflation, and there is a reduction in the ventilatory response to hypoxia and hypercapnia as well as in the perception of increased airway resistance. The increased static lung compliance combined with the decreased chest watt compliance leads to an increase in the functional residual capacity with aging. On the other hand, the loss of alveolar and airways elastic recoil combined with the reduction in the strength of the expiratory muscles, leads to an increase in residual volume and decreased maximal expiratory airflow rates and vital capacity. Despite these changes, the respiratory system maintains an adequate gas exchange at rest and during exercise during the whole life span, showing a normal PaCO2 and a slight decline in PaO2 (-0,3 mmHg per year) which is attenuated to become almost undetectable over the age of 70.info:eu-repo/semantics/openAccessSociedad Médica de SantiagoRevista médica de Chile v.137 n.3 20092009-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872009000300014es10.4067/S0034-98872009000300014
institution	Scielo Chile
collection	Scielo Chile
language	Spanish / Castilian
topic	Aged Respiratory function tests Ventilation-perfusion ratio
spellingShingle	Aged Respiratory function tests Ventilation-perfusion ratio Oyarzún G,Manuel Función respiratoria en la senectud
description	Aging generates four important changes in the structure and function of the respiratory system. There is a reduction in the elastic recoil of the lung causing "senile emphysema", a condition characterized by reduction in the alveolar surface area without alveolar destruction, which is associated with hyperinflation, increased lung compliance and reduction in alveolar-capillary diffusing capacity. There is a decrease in the compliance of the chest watt, due to calcification of its articulations, dorsal kyphosis and "barrel chest". There is a decrease in the strength of respiratory muscles which correlates with cardiac Index, nutritional status and hyperinflation, and there is a reduction in the ventilatory response to hypoxia and hypercapnia as well as in the perception of increased airway resistance. The increased static lung compliance combined with the decreased chest watt compliance leads to an increase in the functional residual capacity with aging. On the other hand, the loss of alveolar and airways elastic recoil combined with the reduction in the strength of the expiratory muscles, leads to an increase in residual volume and decreased maximal expiratory airflow rates and vital capacity. Despite these changes, the respiratory system maintains an adequate gas exchange at rest and during exercise during the whole life span, showing a normal PaCO2 and a slight decline in PaO2 (-0,3 mmHg per year) which is attenuated to become almost undetectable over the age of 70.
author	Oyarzún G,Manuel
author_facet	Oyarzún G,Manuel
author_sort	Oyarzún G,Manuel
title	Función respiratoria en la senectud
title_short	Función respiratoria en la senectud
title_full	Función respiratoria en la senectud
title_fullStr	Función respiratoria en la senectud
title_full_unstemmed	Función respiratoria en la senectud
title_sort	función respiratoria en la senectud
publisher	Sociedad Médica de Santiago
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872009000300014
work_keys_str_mv	AT oyarzungmanuel funcionrespiratoriaenlasenectud
_version_	1718436434288836608

Función respiratoria en la senectud

Ejemplares similares