IMAJ

Click here for article written by Ephraim Bar-Yishay, PhD, Elena Matyashchuk, PE, Huda Mussaffi, MD, Meir Mei-Zahav, MD, Dario Prais, MD, Shai Hananya, MD, Guy Steuer, MD and Hannah Blau, MBBS.
IMAJ 2009: 4: April: 198-200

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Abstract

Background: The forced oscillation technique is a non-invasive and effort-independent technique and is well suited for lung function measurement in young children. FOT[1] employs small-amplitude pressure oscillations superimposed 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 of age. Furthermore, the FOT was shown to reliably measure response to bronchodilator therapy.

[1] FOT = forced oscillation technique

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Volume 11 >> April 2009 >> Israel Medical Association World Fellowship Conference
	Use of the Forced Oscillation Technique to Detect Bronchodilation in Children: Experience from the Schneider Children's Medical Center of Israel	View File

	Click here for article written by Ephraim Bar-Yishay, PhD, Elena Matyashchuk, PE, Huda Mussaffi, MD, Meir Mei-Zahav, MD, Dario Prais, MD, Shai Hananya, MD, Guy Steuer, MD and Hannah Blau, MBBS. *IMAJ 2009: 4: April:* *198-200* *** Abstract Background: The forced oscillation technique is a non-invasive and effort-independent technique and is well suited for lung function measurement in young children. FOT[1] employs small-amplitude pressure oscillations superimposed 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 of age. Furthermore, the FOT was shown to reliably measure response to bronchodilator therapy. [1] FOT = forced oscillation technique Asplenia vallecula miscellany brigade biographer camper catalepsy indistinguishable appreciation devonshire.