TY - JOUR
T1 - Use of the forced oscillation technique to detect bronchodilation in children
T2 - Experience from the Schneider children's medical center of Israel
AU - Bar-Yishay, Ephraim
AU - Matuyashchuk, Elena
AU - Mussaffi, Huda
AU - Mei-Zahav, Mier
AU - Prais, Dario
AU - Hananya, Shai
AU - Steuer, Guy
AU - Blau, Hannah
PY - 2009/6/25
Y1 - 2009/6/25
N2 - Background: The forced oscillation technique is a non-invasive and effort-independent technique that is well suited for lung function measurement in young children. FOT employs small-amplitude pressure oscillations super-imposed on normal breathing. Therefore, it has the advantage over conventional lung function techniques in that it does not require patient cooperation for conducting respiratory maneuvers. Objectives: To test the feasibility of the FOT test in preschool children and to compare the results to the commonly used spirometry before and after the administration of bronchodilator therapy. Methods: Forty-six children (median age 4.9 years, range 1.8-18.3) attending the pulmonary clinic at Schneider Children's Medical Center tried to perform FOT and routine spirometry. Results were retrospectively analyzed. Results: Of the 46 children 40 succeeded in performing FOT and only 29 succeeded in performing simple spirometry. All but one of the 32 children aged 4 years and above (97%) could perform both tests. Nine of 14 children (64%) aged 4 and less could perform the FOT but only 3 (21%) could perform spirometry. Baseline values of respiratory resistance measured at 6 Hz (R6) negatively correlated with body length (r2 = 0.68, P < 0.005). Twenty-four children performed both tests before and after bronchodilator therapy. A significant concordance was found between the measured responses to bronchodilators by FOT and spirometry (P < 0.01). Only one child had a negative response by FOT but a positive response by spirometry. Conclusions: The FOT is a simple, non-invasive technique that does not require subject cooperation and thus can be utilized for measuring lung function in children as young as 2 years old. Furthermore, the FOT was shown to reliably measure response to bronchodilator therapy.
AB - Background: The forced oscillation technique is a non-invasive and effort-independent technique that is well suited for lung function measurement in young children. FOT employs small-amplitude pressure oscillations super-imposed on normal breathing. Therefore, it has the advantage over conventional lung function techniques in that it does not require patient cooperation for conducting respiratory maneuvers. Objectives: To test the feasibility of the FOT test in preschool children and to compare the results to the commonly used spirometry before and after the administration of bronchodilator therapy. Methods: Forty-six children (median age 4.9 years, range 1.8-18.3) attending the pulmonary clinic at Schneider Children's Medical Center tried to perform FOT and routine spirometry. Results were retrospectively analyzed. Results: Of the 46 children 40 succeeded in performing FOT and only 29 succeeded in performing simple spirometry. All but one of the 32 children aged 4 years and above (97%) could perform both tests. Nine of 14 children (64%) aged 4 and less could perform the FOT but only 3 (21%) could perform spirometry. Baseline values of respiratory resistance measured at 6 Hz (R6) negatively correlated with body length (r2 = 0.68, P < 0.005). Twenty-four children performed both tests before and after bronchodilator therapy. A significant concordance was found between the measured responses to bronchodilators by FOT and spirometry (P < 0.01). Only one child had a negative response by FOT but a positive response by spirometry. Conclusions: The FOT is a simple, non-invasive technique that does not require subject cooperation and thus can be utilized for measuring lung function in children as young as 2 years old. Furthermore, the FOT was shown to reliably measure response to bronchodilator therapy.
KW - Bronchodilator therapy
KW - Forced expired volume in 1 second
KW - Maximal expiratory flow-volume maneuver
KW - Preschool children
UR - http://www.scopus.com/inward/record.url?scp=67549140615&partnerID=8YFLogxK
M3 - Article
C2 - 19603589
AN - SCOPUS:67549140615
VL - 11
SP - 198
EP - 200
JO - Israel Medical Association Journal
JF - Israel Medical Association Journal
SN - 1565-1088
IS - 4
ER -