The value of portable chest roentgenography in adult respiratory distress syndrome; Comparison with computed tomography

M. Bombino, L. Gattinoni, A. Pesenti, M. Pistolesi, M. Miniati

Research output: Contribution to journalArticlepeer-review

Abstract

In 17 patients with adult respiratory distress syndrome, we used data derived from computed tomographic (CT) scan densitometric analysis to validate the value of portable chest roentgenograms in objectively estimating the amount of pulmonary edema. Chest roentgenograms and CT scans were taken in the same ventilatory conditions (apnea at 10 cm H2O of positive end-expiratory pressure [PEEP]); blood gas samples and hemodynamic parameters were collected at the same time. Roentgenographic analysis was undertaken by independent observers using two standardized scoring systems proposed in the literature. CT scan analysis was performed using the CT number frequency distribution and the gas lung volume (measured by helium dilution technique) to estimate quantitatively the lung density, the lung weight, and the percentage of normally aerated and nonaerated tissue. Knowing the mean CT number of the pulmonary parenchyma in a group of normal subjects, we also inferred the ideal lung weight expected in the study population and computed the excess tissue mass as the difference between actual and ideal lung weight. Both the roentgenographic scoring systems showed direct correlation with the pulmonary impairment as detected by CT scan densitometric analysis (CT number, percentage of nonaerated tissue, lung weight, and excess tissue mass; p

Original languageEnglish
Pages (from-to)762-769
Number of pages8
JournalChest
Volume100
Issue number3
Publication statusPublished - 1991

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine

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