Interrupter resistance and oxygen saturation for methacholine challenge in young children
نویسندگان
چکیده
Inspiratory Rint better detects BHR than expiratory Rint and might better match PD20PtcO2 changes http://ow.ly/TrMvB.
منابع مشابه
Lung function measurement in awake young children.
The aim of the study was to evaluate methods applicable in a clinical setting for monitoring of changes in lung function in awake young children. Impedance measurements by the impulse oscillation technique (ZIOS), respiratory resistance measurements by the interrupter technique (Rint) and transcutaneous measurements of oxygen tension (Ptc,O2) were compared with concomitant measurements of speci...
متن کاملUse of transcutaneous oxygen tension, arterial oxygen saturation, and respiratory resistance to assess the response to inhaled methacholine in asthmatic children and normal adults.
Respiratory resistance (Rrs6), transcutaneous oxygen tension (PtcO2), and oxygen saturation (SaO2) were measured during methacholine challenge in 15 asthmatic children and six normal adults. During bronchoconstriction, induced by a wide range of inhaled methacholine concentrations (0.5-256 g/l), the rise in Rrs6 was reflected by a fall in PtcO2 in all subjects. Although there was a significant ...
متن کاملEvaluation of a new interrupter device for measuring bronchial responsiveness and the response to bronchodilator in 3 year old children.
The interrupter technique for measuring airway resistance is non-invasive and convenient, and therefore ideally suited for the assessment of induced changes in airway calibre in preschool children. The aim of this study was to evaluate a commercially available interrupter device (based on Microlab 4000), which calculates the interrupter resistance (Rint) from pressure and flow following a brief...
متن کاملMultiple breath washouts in children can be shortened without compromising quality.
childhood. Am J Respir Crit Care Med 2004; 169: 1209–1216. 4 Klug B, Bisgaard H. Measurement of lung function in awake 2–4-year-old asthmatic children during methacholine challenge and acute asthma: a comparison of the impulse oscillation technique, the interrupter technique, and transcutaneous measurement of oxygen versus whole-body plethysmography. Pediatr Pulmonol 1996; 21: 290–300. 5 Van No...
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Tracheal/chest auscultation for wheeze and transcutaneous oximetry have both been suggested as measures of outcome in bronchial provocation tests in young children. This study aimed to compare the sensitivity and safety of these two techniques as end-points for methacholine challenge in children aged <4 yrs. Seventy-two methacholine challenges were performed in 39 children aged <4 yrs with recu...
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