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Rev. Asoc. Méd. Argent ; 128(3): 23-28, sept. 2015. ilus, tab
Article in Spanish | LILACS | ID: biblio-835475

ABSTRACT

Introducción. La pesquisa neonatal para fibrosis quística ha demostrado su utilidad en el diagnóstico precoz con mejoría en nutrición, función pulmonar y cognición. Se coordinaron dos centros para la medición de los valores de TIR y diagnóstico de fibrosis quística, usando un algoritmo tradicional y uno adaptado para mejorar resultados previos sin coordinación. Método. Se presentan datos del período pre-coordinación donde no hubo diagnósticos de FQ a partir de TIR. Se detallan datos del período coordinado, que aun no siendo cronológica ni numéricamente igual al anterior, muestran resultados totalmente distintos. Para TIR se utilizó DELFIA y para test de sudor iontoforesis por pilocarpina. Resultados. Período pre-coordinación entre centros (enero de 2005 a febrero de 2010): se realizaron 18.732 determinaciones de TIR. 74 fueron TIR (+). No hubo diagnósticos de FQ por problemas de seguimiento. Período coordinado: desde el 1° de marzo de 2010 hasta el 31 de diciembre de 2011. Se realizaron 41.142 determinaciones de TIR. Se encontró TIR elevado en la 1ª muestra en 91 niños (0,22%). Se diagnosticaron 4 fibroquísticos por medio de los algoritmos presentados. Conclusiones. En 71 RN seguidos efectivamente con TIR positivo, se diagnosticaron 4 FQ en el período coordinado. Disminuyó la edad media al diagnóstico de 4,54 años a 2,5 meses (aún pocos casos) y la cantidad de perdidos al seguimiento bajó de 36,95 % a 15,90%. Estas cifras sugieren un resultado positivo producto de la integración y centralización de los sistemas como lo cita toda la literatura.


Introduction. Neonatal screening in cystic fibrosis has shown to be an important tool for early diagnosis, better nutrition, diminished lung function and cognitive development. Our laboratory and CF Center were coordinated for IRT screening and diagnosis. We used a standard and a modified algorithm to improve previous results of an uncoordinated period. Method. IRT-IRT-sweat test algorithms was implemented using Dissociation-Enhanced Lanthanide Fluroimmunoassay (DELFIA) for IRT, and pilocarpine iontophoresis for sweat test. Pre-coordination period data are also presented (January 2005 - February 2010) when follow up was difficult .Details for the coordinated period are presented although no statistical comparisons are intended since the number of patients and time-periods studied were completely different. Results. a) pre-coordination period: 18,732 IRT measurements were done. 74 positive IRT tests were detected. No CF diagnosis was made by IRT screening due to problems with follow-up. Only 3 CF patients were diagnosed by genetic studies requested only due to clinical symptoms. b) Coordinated period (March 2010 to December 2011): 41,142 IRT samples were analized. 91 positive first sample IRT detected (0.22%). 71 patients remained for effective follow-up. Four CF diagnosis were made by the algorithm IRT screening-sweat test. Conclusions. In 71 remaining patients after first IRT positive result, CF was diagnosed in four patients. Mean age of diagnosis diminished from 4.54 years to 2.5 months although numbers are small for definitive conclusions. These figures suggest that positive results are the result of coordination and centralization in the CF Center as suggested by many references.


Subject(s)
Humans , Infant, Newborn , Early Diagnosis , Cystic Fibrosis/diagnosis , Neonatal Screening , Argentina , Diagnosis, Differential , Mandatory Testing , Trypsinogen/blood
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