2002
DOI: 10.1590/s0034-70942002000400011 View full text |Buy / Rent full text
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Abstract: RESUMO Fernandes CR, Ruiz Neto PP -O Sistema Respiratório e o Idoso: Implicações Anestésicas Justificativa e Objetivos -As complicações respiratórias são responsáveis por grande parte dos óbitos após procedimentos c i r ú r g i c o s q u e o c o r r e m n a p o p u l a ç ã o g e r i á t r i c Conteúdo -São apresentadas as alterações respiratórias fisiológicas do envelhecimento. São enfatizadas as alterações de volume e capacidades pulmonares, da mecânica respiratória e de trocas gasosas proporcionadas pela a n… Show more

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“…According to ALI et al [19], the reduction of the FVC causes a drop in the PaO 2 by two mechanisms: first by the formation micro-atelectasis or peripheral alveolar collapse and second by the early closure of the small airways. With the reduced FVC, the pulmonary volume becomes very similar to the volume of closure during ventilation at rest, leading some alveolar segments to become permanently closed [20]. These facts might justify, in our study, the greater drop in oxygenation in the intercostal group, due to the greater reduction in FVC.…”
Section: Discussionsupporting
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“…According to ALI et al [19], the reduction of the FVC causes a drop in the PaO 2 by two mechanisms: first by the formation micro-atelectasis or peripheral alveolar collapse and second by the early closure of the small airways. With the reduced FVC, the pulmonary volume becomes very similar to the volume of closure during ventilation at rest, leading some alveolar segments to become permanently closed [20]. These facts might justify, in our study, the greater drop in oxygenation in the intercostal group, due to the greater reduction in FVC.…”
Section: Discussionsupporting
“…It is known that what determine the greatest postoperative pulmonary complications in the elderly are alveolar instability and the greater susceptibility to form atelectasis [24]. Elderly patients also present with a reduction in respiratory muscle force which may increase the ventilation time and after extubation, make re-expansion of areas of atelectasis difficult, contributing to the occurrence of complications [2]. Finally, there was no significant difference in the gas exchange index with age, even though the younger group presented with mean values of less than 200 mmHg.…”
Section: Discussionmentioning
“…PPCs are responsible for 40% of deaths in over 70-year-old patients because of respiratory function changes which include pulmonary compliance loss, increases in pulmonary resistance and reduction of gas exchange resulting from aging [2]. While it is possible to wait for improvements of acute respiratory diseases in elective surgeries, this is not possible with chronic diseases.…”
Section: Introductionmentioning
“…Anesthesia and some surgeries can lead to certain changes in mechanical respiratory assistance, in lung volumes and gas exchange [2]. In cardiothoracic surgery, which is considered a major surgery, many complications can occur, including respiratory complications, which can put the patient in intensive care or on respiratory support for a long time.…”
Section: Introductionmentioning