The clinical use of exhaled nitric oxide in wheezing children
Next Document . 2008;14:195-218
The body of published work on the role of exhaled nitric oxide (FENO) in the study of bronchial inflammation allows it to be classed as a simple, non-invasive measurement that is very useful in evaluating asthmatic patients.
During a prospective study into the effects of air pollution on the health of the population of Viseu (Saud’AR Project), children with a clinical history of wheezing were identified through using the International Study of Asthma and Allergy in Childhood (ISAAC) questionnaire. Children later filled in a new standardised questionnaire and underwent skin-prick-tests, spirometry and FENO measurement. Their mean age was 7.8±1.1 years. Comparing those who wheezed in the 6 months before evaluation (n=27) with those who didn’t, statistical differences for ΔFEV1 (8% median versus 4.5%, p=0.0399) and for FENO (23 ppb median versus 12 ppb, p=0.0195, respectively) were observed. Concerning children who needed a bronchodilator in the six previous months (n=19) and those who didn’t, there was also a statistically significant difference in FENO: 27 ppb median versus 11 ppb median, respectively; p<0.0001. When comparing children who needed an unscheduled medical appointment in the six months previous to the evaluation (n=9) and those who didn’t, there was also significant differences for FENO: 28 ppb median versus 13 ppb median, p=0.0029. In conclusion, the existence of symptoms seems to be better related to FENO than spirometry.
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a Assistente Convidado, Departamento Universitário de Fisiopatologia, Faculdade de Ciências Médicas, Universidade Nova de Lisboa (Centro de Estudos de Patologia Respiratória); Assistente Eventual, Serviço de Imunoalergologia, Hospital de Dona Estefânia / Guest Consultant, Department of Physiopathology, Faculty of Medical Sciences, Universidade Nova de Lisboa (Centre for Respiratory Pathology Studies); Future Consultant, Allergy and Clinical Immunology Unit, Hospital de Dona Estefânia
b Técnica de Cardiopneumologia, Departamento Universitário de Fisiopatologia, Faculdade de Ciências Médicas, Universidade Nova de Lisboa (Centro de Estudos de Patologia Respiratória) / Cardiopulmonology Technician, Department of Physiopathology, Faculty of Medical Sciences, Universidade Nova de Lisboa (Centre for Respiratory Pathology Studies)
c Director de Serviço, Serviço de Imunoalergologia, Hospital de Dona Estefânia / Allergy and Clinical Immunology Unit, Hospital de Dona Estefânia
d Especialista em Imunoalergologia, Instituto Clínico de Alergologia / Allergy and Clinical Immunology Specialist, Allergy and Clinical Immunology Institute
e Director de Serviço, Serviço de Pneumologia, Hospital de São Teotónio / Director, Pulmonology Unit, Hospital de São Teotónio
f Engenheira do Ambiente, Departamento de Ambiente e Ordenamento, Universidade de Aveiro / Environmental Engineer, Department of Environmental and Land Planning, Universidade de Aveiro
g Professor Catedrático, Departamento de Ambiente e Ordenamento, Universidade de Aveiro / Cathedratic Professor, Department of Environmental and Land Planning, Universidade de Aveiro
h Professor Auxiliar, Departamento Universitário de Fisiopatologia, Faculdade de Ciências Médicas, Universidade Nova de Lisboa (Centro de Estudos de Patologia Respiratória); Especialista em Imunoalergologia, Serviço de Imunoalergologia, Hospital de Dona Estefânia / Assistant Professor, Department of Physiopathology, Faculty of Medical Sciences, Universidade Nova de Lisboa (Centre for Respiratory Pathology Studies); Allergy and Clinical Immunology Specialist, Allergy and Clinical Immunology Unit, Hospital de Dona Estefânia