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Vol. 4. Issue 1.
Pages 19-30 (January - February 1998)
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Vol. 4. Issue 1.
Pages 19-30 (January - February 1998)
Artigo Original
Open Access
Terapêutica da sarcoidose: importância da avaliação da PEP
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Ema Sacadura Leite1,*, Ana Cristina Mendes2, Jorge Soares1, Fátima Caeiro1, Teresa Martins3, Guilhermina Cantinho4, A. Teles De Araújo5, M. Freitas e Costa6
1 Interno (a) do Intemato Complementar de Pneumologia do Hospital de Santa Maria, Lisboa.
2 Assistente Hospitalar de Pneumologia do Hospital de Santa Maria, Lisboa.
3 Interna do Internato Complementar de Medicina Nuclear do Hospital de Santa Maria, Lisboa.
4 Assistente da Faculdade de Medicina de Lisboa.
5 Chefe de Serviço de Pneumologia do Hospital de Santa Maria, Lisboa.
6 Director de Serviço de Pneumologia do Hospital de Santa Maria, Lisboa.
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RESUMO

A clearance do DTPA marcado com 99mTc pode ser um método não invasivo para determinar a Permeabilidade Epitelial Pulmonar (PEP). Os objectivos do nosso estudo consistiram em avaliar a PEP de doentes com sarcoidose por aquele método e: 1) Correlacionar o seu valor com os testes funcionais respiratórios – capacidade vital (CV), volume expiratório máximo no primeiro segundo (VEMS), compliance pulmonar estática (St Cpl), difusão de monóxido de carbono (DLCO) e pressão arterial de oxigénio (PaO2) com a TAC, com a fixação pulmonar de Gallium 67 e com o valor de enzima conversora de angiotensina (ECA); 2) Avaliar sea PEP poderá preverá evolução da doença pulmonar, podendo ser, nessa perspectiva, um indicador útil a ter em conta na decisão de tratar a sarcoidose pulmonar.

Estudámos 34 doentes com sarcoidose confirmada por biópsia (idade média 43.3±10.9, 27/34 do sexo feminino, 20% estadio 0, 23% estadio 1, 26% estadio n e 31% estadio III ou IV, tempo de evolução da doença 3. 7±5.4 anos). Os doentes foram divididos em dois grupos: a) com PEP normal – grupo 0 (n=14), b) com PEP aumentada – grupo 1 (n=20). O teste Anova e o teste de Fisher foram utilizados para testar 1. A analise da covariância e teste de Mc Nemar foram utilizados para testar 2.

Encontrámos uma correlação estatisticamente significativa entre os valores da PEP e a CV (G0=102.6±18.3vsG1=86.4±19.7, p=0.01), FEV1, (G0=105.4±20.5 vs G1=85.8±21.5, p=0.0 19), DLCO (G0=100.4 19.4 vs G1=83.2±22.2, p=0.02) e cintigrafia pulmonar com Gallium 67 positiva (p=0.05). Os nossos resultados sugeriram ainda que a PEP poderá prever a evolução da compliance pulmonar estática (p=0.069).

Parece assim que a determinação da PEP através da clearance de99mTc – DTPA possivelmente será útil na decisão clínica de iniciar (ou reiniciar) tratamento, em doentes com sarcoidose pulmonar.

Palavras chave:
Terapêutica na sarcoidose
Permeabilidade Epitelial Pulmonar
ABSTRACT
SARCOIDOSIS THERAPY: IMPORTANCE OF PEP DETERMINATION

Clearance of 99mTc – DTPA may be a non invasive way to determinate Pulmonary Epithelial Permeability (PEP). The aim of our study was to assess PEP of patients with sarcoidosis and: 1) To correlate its value with the initial lung function tests values - VC, FEV1, St Cpt, DLCO, PaO2, TC, 67 Gallium pulmonary fixation and SACE determinations; 2) To evaluate if PEP can predict patients evolution after one year of follow up, being a valid indicator to decide about pulmonar sarcoidosis treatment.

We studied 34 patients with biopsy proven sarcoidosis (mean age 43.3±10.9, 27/34 females, 20% stage 0, 23% stage 1, 26% stage II, 3 1% stage III, mean time of disease evolution 3. 7±5.4years).

Patients were divided in two groups a) normal PEP – Group 0 (n=14) b) increased PEP – Group 1 (n=20). Anova and Fisher testes were used to test 1) and study of change was made by Me Nemar test and analysis of covariance to test 2). We found a significant correlation of PEP values and VC (G0=102.6±18.3 vs G1=86.4±19.7, p=0.01), FEV, (G0=105.4±20.5 vs G1=85.8±21.5, p=0.019), DLCO (G0=100.4±19.4 vs G1=83.2±22.2, p=0.02) and lung 67 Gallium positivity (p=0.05). Regarding predictability of evolution there was a sugestion that initial PEP value would predict evolution of St Cpl (p=0.069).

Our results suggest that PFP evaluation are probably useful in the decision of initiating (or reinstituting) treatment in pulmonary sarcoidosis.

Key Words:
Sarcoidosis treatment
Pulmonary Epithelial Permeability
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Pulmonology
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