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 - 2005
EventRoyal College of Paediatrics and Child Health Conference - York, United Kingdom
Duration: 25 Dec 2005 → …

Conference

ConferenceRoyal College of Paediatrics and Child Health Conference
CountryUnited Kingdom
CityYork
Period25/12/05 → …

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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. (2005). Measurement of airway resistance using the interrupter technique (Rint) in preschool children with bronchopulmonary dysplasia in ambulatory setting. Paper presented at Royal College of Paediatrics and Child Health Conference, York, 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 Royal College of Paediatrics and Child Health Conference, York, United Kingdom.
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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.",
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Kairamkonda, V, Shaw, N & Bridge, P 2005, 'Measurement of airway resistance using the interrupter technique (Rint) in preschool children with bronchopulmonary dysplasia in ambulatory setting' Paper presented at Royal College of Paediatrics and Child Health Conference, York, United Kingdom, 25/12/05, .

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

2005. Paper presented at Royal College of Paediatrics and Child Health Conference, York, 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 - 2005

Y1 - 2005

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. 2005. Paper presented at Royal College of Paediatrics and Child Health Conference, York, United Kingdom.