Abstract
The interrupter technique may be used to monitor airway resistance in preschool children, because it is noninvasive and requires minimal patient co-operation. We investigated the utility of the interrupter technique (Rint) in pediatric patients with asthma. Three hundred and nineteen asthmatic children aged 2-17yrs with no asthma attack performed Rint measurements. And two hundred and eighty four patients performed spirometry at the same time. The airway resistance that we measured by Rint was negatively correlated with age, height, weight, and the surface area of the body, but was not correlated with morbid period. Spirometoric parameters were negatively correlated with the airway resistance.
We think the airway resistance that we measured by Rint is very close to the normal value of that in healthy children. And the interrupter technique may be useful for the lung function test in asthmatic children, similar spirometry.
