Spectrum of chest roentgenographic observations in chronic airflow obstruction
Kulpati, D.D.S.; Nayar, S. and Bhardwaj, O.P. (1986) Spectrum of chest roentgenographic observations in chronic airflow obstruction. Indian Journal of Tuberculosis, 33 (1). pp. 5-10.
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A prospective study of 30 patients with chronic airflow obstruction (CAO) and 20 healthy controls was carried out for observing different pulmonary radiological changes according to severity of CAO. The analysis of radiological findings revealed that the range of diaphragmatic excursion was 2.8 to 6.8 cm (mean 3.6 cm) in normal healthy adults while a value of less than 2 cm always indicated the presence of airflow obstruction. Airflow obstruction was always present (specificity 100%) when the right dome of the diaphragm was at the level of the anterior end of the 7th rib, but the sensitivity of this index was low (36.6%). An increase in radioluccncy with evidence of air trapping was consistently evident in severe CAO. but no significant relation was observed with severity of CAO. Diaphragmatic index of less than 1.5cm, reti-osternal space of more than 2.5cm and sternoidphrag-niatic angle of more than 90° were valuable radiological indices for the presence and seventy of chronic airflow obstruction. The prominence of pulmonary artery segment and cardiothoracic ratio did not show any definite pattern in the present study. On bronchography, patients with increasing severity of CAO showed abrupt termination of bronchi with incomplete filling of tertiary and fine bronchi, leafless-tree appearance, patchy alveolisation, mucus gland dilatation, crowding of bronchi in non-emphysematOLis areas, displacement and splaying of bronchi in the emphysematous areas.
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