Clinical evaluation of the Nanoduct sweat test system in the diagnosis of cystic fibrosis after newborn screening

被引:0
作者
Annette Vernooij-van Langen
Edward Dompeling
Jan-Bart Yntema
Bert Arets
Harm Tiddens
Gerard Loeber
Jeannette Dankert-Roelse
机构
[1] St Jansdal Hospital,Department of Paediatrics
[2] Maastricht University Medical Centre,Department of Paediatric Pulmonology
[3] University Medical Centre Nijmegen-St Radboud,Department of Paediatric Pulmonology
[4] University Medical Centre Utrecht-Wilhelmina’s Children’s Hospital,Department of Paediatric Pulmonology
[5] Sophia Children’s Hospital,Department of Paediatric Pulmonology, Erasmus Medical Centre
[6] National Institute for Public Health and the Environment (RIVM),Laboratory for Infectious Diseases and Perinatal Screening
[7] Atrium Medical Centre,Department of Paediatrics
来源
European Journal of Pediatrics | 2015年 / 174卷
关键词
Cystic fibrosis; Diagnosis; Infants; Sweat test; Nanoduct;
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学科分类号
摘要
After a positive newborn screening test for cystic fibrosis (CF), a sweat test is performed to confirm the diagnosis. The success rate of the generally acknowledged methods (Macroduct/Gibson and Cooke) in newborns varies between 73 and 99 %. The Nanoduct sweat test system is easier to perform and less sweat is needed. The main aim of this study was to measure the success rate of the Nanoduct compared to current approved sweat test methods in a newborn population. After informed consent of the parents, newborns with a positive screening test for CF were included. The Macroduct or Gibson and Cooke and Nanoduct were performed in all infants, during the same appointment. The chloride concentration was determined by standard coulorimetry; conductivity was measured directly and converted to a NaCl molarity. One hundred eight newborns were included: 17 with CF, 7 with cystic fibrosis transmembrane regulator (CFTR)-related metabolic syndrome (CRMS), and 84 healthy children. The success rate of the Nanoduct was 93 % and for the Macroduct/Gibson and Cooke 79 % (McNemar, p = 0.002). The Nanoduct detected the same CF patients as the Macroduct/Gibson and Cooke; one CF patient had an equivocal result for both tests, and no patients were missed. The area under the receiver operating characteristic curve for detection of CF with the Nanoduct was 0.999, with ideal cutoff levels of 91 and 66 mmol/l, comparable to former studies.
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页码:1025 / 1034
页数:9
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