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Vol. 39. Issue 1.
Pages 23-28 (January 2003)
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Vol. 39. Issue 1.
Pages 23-28 (January 2003)
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Evaluación de los criterios diagnósticos clínicos de fibrosis pulmonar idiopática
Evaluation of clinical diagnostic guidelines for idiopathic pulmonary fibrosis
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J.L. López-Campos Bodineaua,
Corresponding author
lcampos@hcs.es

Correspondencia: Avda. Reina Mercedes, 35, 6.° D. 41012 Sevilla. España
, L. Gómez Izquierdob, E. Rodríguez Becerraa, J. Martín Juana, M. Fajardo Cascosc, F. Borderas Naranjob, J. Castillo Gómeza
a Unidad Médico-Quirúrgica de Enfermedades Respiratorias. Hospital Universitario Virgen del Rocio. Sevilla. España
b Servicio de Anatomía Patológica. Hospital Universitario Virgen del Rocío. Sevilla. España
c Servicio de Radiodiagnóstico. Hospital Universitario Virgen del Rocío. Sevilla. España
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Objetivos

Estudiar los criterios diagnósticos de la fibro-sis pulmonar idiopática según el último Consenso Interna-cional

Pacientes Y Método

Se incluyó a todos los pacientes diagnosticados de cualquier enfermedad intersticial por me-dio de biopsia pulmonar abierta desde 1980. Se revisaron sus historias clínicas para averiguar si cumplían los criterios diagnósticos, así como sus biopsias pulmonares en busca del patrón de neumonía intersticial usual. Se calcularon la sen-sibilidad, la especificidad, los valores predictivos positivo y negativo y los cocientes de probabilidad. Posteriormente, se realizó el mismo análisis requiriendo sólo una de las dos condiciones funcionales para cumplir el criterio funcional

Resultados

Se incluyó a 39 pacientes, 17 de los cuales presentaban una fibrosis pulmonar idiopática. La especifici-dad y el valor predictivo positivo fue del 100%, mientras que la sensibilidad y el valor predictivo negativo fueron del 41,2 y del 68,7%, respectivamente. El cociente de probabili-dad para un resultado negativo fue de 0,59. En el segundo análisis, la sensibilidad y el valor predictivo negativo fueron del 64,7 y del 78,5%, respectivamente, con idéntica especifi-cidad y valor predictivo positivo. El cociente de probabili-dad para un resultado negativo fue de 0,35

Conclusiones

Los criterios diagnósticos son lo suficien-temente específicos como para estar seguros del diagnóstico cuando se cumplen. Debería considerarse un pequeño cam-bio en el criterio funcional para aumentar la rentabilidad del diagnóstico

Palabras clave:
Fibrosis pulmonar idiopática
Neumonía inters-ticial usual
Diagnóstico
Objectives

To analyze the international consensus state-ment on diagnostic criteria for idiopathic pulmonary fibro-sis

Methods

All patients diagnosed of any interstitial lung disease by means of open lung biopsy since 1980 were inclu-ded. The patients' clinical records were examined to deter-mine whether they fulfilled the diagnostic criteria, and their biopsies were reviewed to find those with the usual intersti-tial pneumonia pattern. We calculated sensitivity, specifi-city, positive and negative predictive values and likelihood ratios for the diagnostic criteria in the consensus statement. Afterwards, we performed the analyses again using only one of the two conditions for fulfilling the function criterion

Results

Of 39 patients enrolled in the study, 17 had idio-pathic pulmonary fibrosis. Specificity and positive predicti-ve value were both 100%, but sensitivity was 41.2% and ne-gative predictive value was 68.7%. The likelihood ratio for a negative result was 0.59. In the second analysis, sensitivity was 64.7% and negative predictive value was 78.5%, while specificity and positive predictive value remained unchan-ged. The likelihood ratio for a negative result was 0.35

Conclusions

The criteria are sufficiently specific to allow us to diagnose confidently when the criteria are fulfi-lled. However, a slight change in the function criterion should be considered in order to increase diagnostic yield

Keywords:
Idiopathic pulmonary fibrosis
Usual interstitial pneumonia
Diagnosis
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