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        "resumen" => "<span id="as0005" class="elsevierStyleSection elsevierViewall"><p id="sp0005" class="elsevierStyleSimplePara elsevierViewall">Foram estudados 194 casos de fumadores e exfumadores &#40;&#8805; 1 UMA&#41;&#44; de ambos os sexos e idades compreendidas entre os 20 e os 82 anos&#44; tendo sido exclu&#237;dos doentes detentores de patologias ou antecedentes profissionais de risco&#46; Apresentavam grau variado de sintomatologia e exame pletismogr&#225;fico normal&#44; mas com valores anormais do factor de transfer&#234;ncia alv&#233;olo-capilar&#44; determinados pelo m&#233;todo de <span class="elsevierStyleItalic">single breath</span> com CO &#40;TL<span class="elsevierStyleInf">CO</span> SB e TL<span class="elsevierStyleInf">CO</span> &#47;VA&#41;&#46; Dos 194 casos avaliados&#44; 136 &#40;70&#44;1&#37;&#41; tinham valores anormais de um ou dos dois par&#226;metros referidos&#46; No tratamento estat&#237;stico da amostra &#40;teste do qui-quadrado&#41;&#44; a diferen&#231;a da sensibilidade entre ambos os par&#226;metros foi significativa &#40;p<span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>0&#44;0001&#41;&#46; As eventuais limita&#231;&#245;es do m&#233;todo de avalia&#231;&#227;o usado &#40;<span class="elsevierStyleItalic">single breath</span>&#41; foram&#44; no presente estudo&#44; minimizadas &#40;restri&#231;&#227;o ventilat&#243;ria com capacidade vital<span class="elsevierStyleHsp" style=""></span>&#60;<span class="elsevierStyleHsp" style=""></span>1&#44;5 litros&#41;&#44; pela normalidade referida do exame pletismogr&#225;fico&#46; De igual modo&#44; a presen&#231;a de altera&#231;&#245;es da distribui&#231;&#227;o ventilat&#243;ria foi&#44; em princ&#237;pio&#44; exclu&#237;da pela aus&#234;ncia de valores da rela&#231;&#227;o CPT-sb&#47;CPTplet inferiores a 0&#44;85&#46;</p><p id="sp0010" class="elsevierStyleSimplePara elsevierViewall"><span class="elsevierStyleBold">Conclus&#245;es&#58;</span> A normalidade do exame pletismogr&#225;fico em grandes fumadores ou ex-fumadores n&#227;o &#233; suficiente para afirmar uma normalidade da fun&#231;&#227;o respirat&#243;ria&#44; visto que grande percentagem de casos apresenta anormalidades do factor de transfer&#234;ncia alv&#233;olo-capilar pelo CO&#46; A limita&#231;&#227;o alveolar considerada foi&#44; n&#227;o s&#243; a anat&#243;mica&#44; mas&#44; igualmente&#44; a de car&#225;cter funcional&#46;</p><p id="sp0015" class="elsevierStyleSimplePara elsevierViewall"><span class="elsevierStyleBold">Rev Port Pneumol 2007&#59; XIII &#40;6&#41;&#58; 763-774</span></p></span>"
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        "resumen" => "<span id="as0010" class="elsevierStyleSection elsevierViewall"><p id="sp0020" class="elsevierStyleSimplePara elsevierViewall">This study comprised 194 male and female heavy smokers or ex-smokers &#40;&#8805; 1 pack-year&#41; aged between 20 and 82&#44; whose symptoms varied&#46; Cases were only selected from patients with normal whole-body plethysmography&#46; Subjects with any significant pathology and occupational risk factors were excluded from the study&#46;</p><p id="sp0025" class="elsevierStyleSimplePara elsevierViewall">Varying degrees of symptoms were found and a range of results from normal plethysmography examination&#44; with abnormal levels of alveolar-capillary transfer&#44; determined by the single-breath method to analyse CO &#40;TL<span class="elsevierStyleInf">CO</span> and TL<span class="elsevierStyleInf">CO</span> -VA&#41; coefficients&#46; Using the chi-square test for statistical analysis of the sample revealed a significant variation in sensitivity between both parameters &#40;p<span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>0&#46;0001&#41;&#46;</p><p id="sp0030" class="elsevierStyleSimplePara elsevierViewall">Possible limitations of using the single-breath method&#44; of were reduced in this study &#40;ventilatory restriction withVital Capacity &#60;<span class="elsevierStyleHsp" style=""></span>1&#46;5 litres&#41; by the routine plethysmography results seen&#46; Likewise&#44; the presence of alterations in ventilatory distribution was&#44; in principle&#44; minimised by the absence of TLCsb&#47;TLCplet values below 0&#46;85&#37;</p><p id="sp0035" class="elsevierStyleSimplePara elsevierViewall"><span class="elsevierStyleBold">Conclusions</span>&#58; Normal plethysmography results in heavy or ex-smokers are not enough to confirm normal respiratory function&#44; as a large percentage of cases present abnormalities in the alveolar-capillary transfer factor for CO&#46; Alveolar limitation was considered not only anatomically&#44; but also from a functional perspective&#46;</p><p id="sp0040" class="elsevierStyleSimplePara elsevierViewall"><span class="elsevierStyleBold">Rev Port Pneumol 2007&#59; XIII &#40;6&#41;&#58; 763-774</span></p></span>"
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Artigo Original / Original Article
A importância do estudo da difusão alvéolo-capilar, como complemento da pletismografia, na avaliação funcional de fumadores
The importance of diffusing capacity as a complementary study to plethysmography in smokers
António Paes Cardoso1, José Manuel Reis Ferreira2, Álvaro Moreira da Silva3
1 Pneumologista e Professor auxiliar convidado da Cadeira de Fisiologia Humana – Universidade do Porto – ICBAS (Instituto de Ciências Biomédicas de Abel Salazar). Consultor de fisiopatologia respiratória do Hospital Geral de Santo António / Pulmonologist and guest professor, Human Physiology – Porto University – ICBAS (Instituto de Ciências Biomédicas de Abel Salazar). Consultant in Respiratory Physiopathology, Santo António Hospital
2 Pneumologista e chefe de Serviço de Pneumologia do Hospital da Força Aérea, responsável pelo Laboratório de Função Pulmonar. Director Clínico da Clínica de Doentes Pulmonares, Lisboa / Pulmonologist and head of the Pulmonology unit of the Portuguese Air Force Hospital. Head of the Pulmonary Function Laboratory. Clinical Director of the Pulmonary Clinic, Lisbon
3 Chefe de Serviço do Serviço de Cuidados Intensivos do Hospital Geral de Santo António. Assistente Convidado de Clínica Médica II (Pneumologia). Responsável pelo laboratório de Função Pulmonar do Hospital Geral de Santo António/ Head of the ICU at Santo António Hospital. Guest professor, Medical Clinic II (Pulmonology). Head of the Pulmonary Function Laboratory, Santo António Hospital
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        "resumen" => "<span id="as0005" class="elsevierStyleSection elsevierViewall"><p id="sp0005" class="elsevierStyleSimplePara elsevierViewall">Foram estudados 194 casos de fumadores e exfumadores &#40;&#8805; 1 UMA&#41;&#44; de ambos os sexos e idades compreendidas entre os 20 e os 82 anos&#44; tendo sido exclu&#237;dos doentes detentores de patologias ou antecedentes profissionais de risco&#46; Apresentavam grau variado de sintomatologia e exame pletismogr&#225;fico normal&#44; mas com valores anormais do factor de transfer&#234;ncia alv&#233;olo-capilar&#44; determinados pelo m&#233;todo de <span class="elsevierStyleItalic">single breath</span> com CO &#40;TL<span class="elsevierStyleInf">CO</span> SB e TL<span class="elsevierStyleInf">CO</span> &#47;VA&#41;&#46; Dos 194 casos avaliados&#44; 136 &#40;70&#44;1&#37;&#41; tinham valores anormais de um ou dos dois par&#226;metros referidos&#46; No tratamento estat&#237;stico da amostra &#40;teste do qui-quadrado&#41;&#44; a diferen&#231;a da sensibilidade entre ambos os par&#226;metros foi significativa &#40;p<span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>0&#44;0001&#41;&#46; As eventuais limita&#231;&#245;es do m&#233;todo de avalia&#231;&#227;o usado &#40;<span class="elsevierStyleItalic">single breath</span>&#41; foram&#44; no presente estudo&#44; minimizadas &#40;restri&#231;&#227;o ventilat&#243;ria com capacidade vital<span class="elsevierStyleHsp" style=""></span>&#60;<span class="elsevierStyleHsp" style=""></span>1&#44;5 litros&#41;&#44; pela normalidade referida do exame pletismogr&#225;fico&#46; De igual modo&#44; a presen&#231;a de altera&#231;&#245;es da distribui&#231;&#227;o ventilat&#243;ria foi&#44; em princ&#237;pio&#44; exclu&#237;da pela aus&#234;ncia de valores da rela&#231;&#227;o CPT-sb&#47;CPTplet inferiores a 0&#44;85&#46;</p><p id="sp0010" class="elsevierStyleSimplePara elsevierViewall"><span class="elsevierStyleBold">Conclus&#245;es&#58;</span> A normalidade do exame pletismogr&#225;fico em grandes fumadores ou ex-fumadores n&#227;o &#233; suficiente para afirmar uma normalidade da fun&#231;&#227;o respirat&#243;ria&#44; visto que grande percentagem de casos apresenta anormalidades do factor de transfer&#234;ncia alv&#233;olo-capilar pelo CO&#46; A limita&#231;&#227;o alveolar considerada foi&#44; n&#227;o s&#243; a anat&#243;mica&#44; mas&#44; igualmente&#44; a de car&#225;cter funcional&#46;</p><p id="sp0015" class="elsevierStyleSimplePara elsevierViewall"><span class="elsevierStyleBold">Rev Port Pneumol 2007&#59; XIII &#40;6&#41;&#58; 763-774</span></p></span>"
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        "resumen" => "<span id="as0010" class="elsevierStyleSection elsevierViewall"><p id="sp0020" class="elsevierStyleSimplePara elsevierViewall">This study comprised 194 male and female heavy smokers or ex-smokers &#40;&#8805; 1 pack-year&#41; aged between 20 and 82&#44; whose symptoms varied&#46; Cases were only selected from patients with normal whole-body plethysmography&#46; Subjects with any significant pathology and occupational risk factors were excluded from the study&#46;</p><p id="sp0025" class="elsevierStyleSimplePara elsevierViewall">Varying degrees of symptoms were found and a range of results from normal plethysmography examination&#44; with abnormal levels of alveolar-capillary transfer&#44; determined by the single-breath method to analyse CO &#40;TL<span class="elsevierStyleInf">CO</span> and TL<span class="elsevierStyleInf">CO</span> -VA&#41; coefficients&#46; Using the chi-square test for statistical analysis of the sample revealed a significant variation in sensitivity between both parameters &#40;p<span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>0&#46;0001&#41;&#46;</p><p id="sp0030" class="elsevierStyleSimplePara elsevierViewall">Possible limitations of using the single-breath method&#44; of were reduced in this study &#40;ventilatory restriction withVital Capacity &#60;<span class="elsevierStyleHsp" style=""></span>1&#46;5 litres&#41; by the routine plethysmography results seen&#46; Likewise&#44; the presence of alterations in ventilatory distribution was&#44; in principle&#44; minimised by the absence of TLCsb&#47;TLCplet values below 0&#46;85&#37;</p><p id="sp0035" class="elsevierStyleSimplePara elsevierViewall"><span class="elsevierStyleBold">Conclusions</span>&#58; Normal plethysmography results in heavy or ex-smokers are not enough to confirm normal respiratory function&#44; as a large percentage of cases present abnormalities in the alveolar-capillary transfer factor for CO&#46; Alveolar limitation was considered not only anatomically&#44; but also from a functional perspective&#46;</p><p id="sp0040" class="elsevierStyleSimplePara elsevierViewall"><span class="elsevierStyleBold">Rev Port Pneumol 2007&#59; XIII &#40;6&#41;&#58; 763-774</span></p></span>"
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ISSN: 08732159
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Pulmonology

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