The potential risk of spirometers in the transmission of respiratory infections has not been yet established. We performed a prospective cross-sectional study to determine the rate of colonization of a water-sealed spirometer and a pneumotachograph, and the potential risk of cross-transmission of microorganisms to patients using each of these devices. Fifty four patients (aged 51 +/- 18 (mean +...

OBJECTIVE The aim of the study is to develop a instrumental method capable to achieve pulmonary air function test (spirometry) by assembling the spirometer mouthpiece to the laryngectomized patient's stoma. MATERIAL AND METHOD Our study was carried out in 33 laryngectomized patients (all male). The spirometer tests were done with a Datospir 92 by Sibelmed equipment, which consists of a dry Fl...

Two samples of a manual 3 L calibrating syringe which displays an electronically calculated FEF25-75% were evaluated to determine its suitability as a flow calibrator were evaluated. Room air was discharged into a manual spirometer system known to be accurate. The calibrator-determined values correlated very closely with the spirometer values over an FEF25-75 % range of 0.4 to 9 L/sec. The diff...

Introduction: MR compatible spirometer is needed for (i) monitoring of anaesthetized patients and (ii) sequence synchronization and/or image reconstruction. Patient motion is likely to induce motion artifacts (ghosting) in image thus reducing its quality during MRI acquisitions. When breath-hold acquisitions are not possible, as for uncooperative children, an alternative technique is proposed, ...

A smartphone-based tidal volume (V(T)) estimator was recently introduced by our research group, where an Android application provides a chest movement signal whose peak-to-peak amplitude is highly correlated with reference V(T) measured by a spirometer. We found a Normalized Root Mean Squared Error (NRMSE) of 14.998% ± 5.171% (mean ± SD) when the smartphone measures were calibrated using spirom...

A comparison was made between the noncounterweighted Jones and Stead-Wells spirometers, and "conversion factors" were determined for the forced expiratory volume in one second (FEV1) and the forced vital capacity (FVC). A cross-sectional study produced a high correlation between the instruments for these two measurements, yielding quadratic and linear regression equations ("conversion factors")...

A compact electronic spirometer, the turbine pocket spirometer, which measures the FEV1, forced vital capacity (FVC), and peak expiratory flow (PEF) in a single expiration, was compared with the Vitalograph and the Wright peak flow meter in 99 subjects (FEV1 range 0.40-5.50 litres; FVC 0.58-6.48 l; PEF 40-650 l min-1). The mean differences between the machines were small--0.05 l for FEV1, 0.05 ...