Publications by authors named "R Chavagneux"

The purpose of this study was to assess the diaphragmatic excursion using the TM-mode ultrasonography with concomitant pneumotachography in eight normal and five asthmatic subjects before and after salbutamol. We report the results in normal and asthmatic patients of this procedure. Particular findings were demonstrated in asthma.

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The value of sonography in lung diseases such as sarcoidosis is not established. Twelve patients with pulmonary sarcoidosis and eight control subjects underwent a sonographic examination using a high frequency probe (7.5 MHz).

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Ultrasonography is considered to have limited application in respiratory diseases because air reflects sound waves. Twenty-four patients with radiologically confirmed pneumothorax and 100 healthy subjects underwent sonography. In all normal subjects, the hyperechoic pulmonary interface showed respiratory motions termed the "gliding sign" with some comet-tail artifacts.

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Thirty-nine consecutive patients with consolidated lung confirmed radiologically underwent sonography, and their sonograms were compared with results for 100 healthy subjects. The hyperechoic line of normal aerated lung and its air artifacts showed respiratory motions ("gliding sign," n = 100). Patients with pneumonia demonstrated distinct sonographic patterns.

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Ultrasound results for 11 patients with HPN confirmed by CXR were compared with those for 100 healthy subjects. The observation of the hyperechogenic line of the pleuropulmonary surface (normal subjects) showed back-and-forth respiratory movements in every case which we call the "gliding sign." Ultrasonographic signs were shown in all patients with HPN.

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