Measurement of airway resistance using the interrupter technique (Rint) in preschool children with bronchopulmonary dysplasia in ambulatory setting

V Kairamkonda, N Shaw, P Bridge

    Research output: Contribution to conferencePaper

    Abstract

    Background: Measurement of airway resistance by interrupter technique (Rint) is feasible in preschool children unable to undertake spirometry. Though normative data have been established in healthy 2-10 year old children the value of Rint for children with chronic illness has not been established. Premature infants surviving with bronchopulmonary dysplasia (BPD) are reported to have abnormal lung function in childhood. We therefore aimed to determine the sensitivity of MicroRint (Micro Medical Ltd, Rochester, UK), a portable device, to identify differences in Rint in preschool children with BPD compared to preterm controls and its feasibility in an outpatient setting. Method: Rint was measured by a single investigator using a standard technique in 76 eligible children between 2-5 yrs old attending outpatients. The mean of at least 6 acceptable values of Rint with consistent shape of pressure waveform (Pmo(t)) was taken. Children with respiratory illness within 1 month, congenital anomaly and cardiac defects were excluded. Results: Rint was measured successfully in 10/28 (36%) 2-3 yr, 13/20 (65%) 3-4 yr and 23/28 (82%) 4-5 yr old children (n=76, 26 BPD and 20 Controls). There was no difference in Rint between BPD and preterm control children (n=46, median 1.36 v 1.22 kPa/l.s, p=0.64) Conclusions: Although measuring Rint is feasible in preschool children in an ambulatory set-up, Rint is not increased in preschool children with BPD compared to preterm controls.
    Original languageEnglish
    Publication statusPublished - 2004
    EventEuropean Respiratory Society Annual Conference - Glasgow, United Kingdom
    Duration: 4 Sep 20048 Sep 2004

    Conference

    ConferenceEuropean Respiratory Society Annual Conference
    CountryUnited Kingdom
    CityGlasgow
    Period4/09/048/09/04

    Fingerprint

    Bronchopulmonary Dysplasia
    Airway Resistance
    Preschool Children
    Outpatients
    Spirometry
    Premature Infants
    Chronic Disease
    Research Personnel
    Pressure
    Equipment and Supplies
    Lung

    Cite this

    Kairamkonda, V., Shaw, N., & Bridge, P. (2004). Measurement of airway resistance using the interrupter technique (Rint) in preschool children with bronchopulmonary dysplasia in ambulatory setting. Paper presented at European Respiratory Society Annual Conference, Glasgow, United Kingdom.
    Kairamkonda, V ; Shaw, N ; Bridge, P. / Measurement of airway resistance using the interrupter technique (Rint) in preschool children with bronchopulmonary dysplasia in ambulatory setting. Paper presented at European Respiratory Society Annual Conference, Glasgow, United Kingdom.
    @conference{5e24311b9ff3472296f32ea31b2f9c1c,
    title = "Measurement of airway resistance using the interrupter technique (Rint) in preschool children with bronchopulmonary dysplasia in ambulatory setting",
    abstract = "Background: Measurement of airway resistance by interrupter technique (Rint) is feasible in preschool children unable to undertake spirometry. Though normative data have been established in healthy 2-10 year old children the value of Rint for children with chronic illness has not been established. Premature infants surviving with bronchopulmonary dysplasia (BPD) are reported to have abnormal lung function in childhood. We therefore aimed to determine the sensitivity of MicroRint (Micro Medical Ltd, Rochester, UK), a portable device, to identify differences in Rint in preschool children with BPD compared to preterm controls and its feasibility in an outpatient setting. Method: Rint was measured by a single investigator using a standard technique in 76 eligible children between 2-5 yrs old attending outpatients. The mean of at least 6 acceptable values of Rint with consistent shape of pressure waveform (Pmo(t)) was taken. Children with respiratory illness within 1 month, congenital anomaly and cardiac defects were excluded. Results: Rint was measured successfully in 10/28 (36{\%}) 2-3 yr, 13/20 (65{\%}) 3-4 yr and 23/28 (82{\%}) 4-5 yr old children (n=76, 26 BPD and 20 Controls). There was no difference in Rint between BPD and preterm control children (n=46, median 1.36 v 1.22 kPa/l.s, p=0.64) Conclusions: Although measuring Rint is feasible in preschool children in an ambulatory set-up, Rint is not increased in preschool children with BPD compared to preterm controls.",
    author = "V Kairamkonda and N Shaw and P Bridge",
    year = "2004",
    language = "English",
    note = "European Respiratory Society Annual Conference ; Conference date: 04-09-2004 Through 08-09-2004",

    }

    Kairamkonda, V, Shaw, N & Bridge, P 2004, 'Measurement of airway resistance using the interrupter technique (Rint) in preschool children with bronchopulmonary dysplasia in ambulatory setting', Paper presented at European Respiratory Society Annual Conference, Glasgow, United Kingdom, 4/09/04 - 8/09/04.

    Measurement of airway resistance using the interrupter technique (Rint) in preschool children with bronchopulmonary dysplasia in ambulatory setting. / Kairamkonda, V; Shaw, N; Bridge, P.

    2004. Paper presented at European Respiratory Society Annual Conference, Glasgow, United Kingdom.

    Research output: Contribution to conferencePaper

    TY - CONF

    T1 - Measurement of airway resistance using the interrupter technique (Rint) in preschool children with bronchopulmonary dysplasia in ambulatory setting

    AU - Kairamkonda, V

    AU - Shaw, N

    AU - Bridge, P

    PY - 2004

    Y1 - 2004

    N2 - Background: Measurement of airway resistance by interrupter technique (Rint) is feasible in preschool children unable to undertake spirometry. Though normative data have been established in healthy 2-10 year old children the value of Rint for children with chronic illness has not been established. Premature infants surviving with bronchopulmonary dysplasia (BPD) are reported to have abnormal lung function in childhood. We therefore aimed to determine the sensitivity of MicroRint (Micro Medical Ltd, Rochester, UK), a portable device, to identify differences in Rint in preschool children with BPD compared to preterm controls and its feasibility in an outpatient setting. Method: Rint was measured by a single investigator using a standard technique in 76 eligible children between 2-5 yrs old attending outpatients. The mean of at least 6 acceptable values of Rint with consistent shape of pressure waveform (Pmo(t)) was taken. Children with respiratory illness within 1 month, congenital anomaly and cardiac defects were excluded. Results: Rint was measured successfully in 10/28 (36%) 2-3 yr, 13/20 (65%) 3-4 yr and 23/28 (82%) 4-5 yr old children (n=76, 26 BPD and 20 Controls). There was no difference in Rint between BPD and preterm control children (n=46, median 1.36 v 1.22 kPa/l.s, p=0.64) Conclusions: Although measuring Rint is feasible in preschool children in an ambulatory set-up, Rint is not increased in preschool children with BPD compared to preterm controls.

    AB - Background: Measurement of airway resistance by interrupter technique (Rint) is feasible in preschool children unable to undertake spirometry. Though normative data have been established in healthy 2-10 year old children the value of Rint for children with chronic illness has not been established. Premature infants surviving with bronchopulmonary dysplasia (BPD) are reported to have abnormal lung function in childhood. We therefore aimed to determine the sensitivity of MicroRint (Micro Medical Ltd, Rochester, UK), a portable device, to identify differences in Rint in preschool children with BPD compared to preterm controls and its feasibility in an outpatient setting. Method: Rint was measured by a single investigator using a standard technique in 76 eligible children between 2-5 yrs old attending outpatients. The mean of at least 6 acceptable values of Rint with consistent shape of pressure waveform (Pmo(t)) was taken. Children with respiratory illness within 1 month, congenital anomaly and cardiac defects were excluded. Results: Rint was measured successfully in 10/28 (36%) 2-3 yr, 13/20 (65%) 3-4 yr and 23/28 (82%) 4-5 yr old children (n=76, 26 BPD and 20 Controls). There was no difference in Rint between BPD and preterm control children (n=46, median 1.36 v 1.22 kPa/l.s, p=0.64) Conclusions: Although measuring Rint is feasible in preschool children in an ambulatory set-up, Rint is not increased in preschool children with BPD compared to preterm controls.

    M3 - Paper

    ER -

    Kairamkonda V, Shaw N, Bridge P. Measurement of airway resistance using the interrupter technique (Rint) in preschool children with bronchopulmonary dysplasia in ambulatory setting. 2004. Paper presented at European Respiratory Society Annual Conference, Glasgow, United Kingdom.