Bronchographic and Angiopneumographic Changes Associated with Esophageal Hiatus Hernia

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Abstract
The effects of experimentally created esophageal hiatus hernia on bronchi and pulmonary vessels were studied in five dogs. No changes in vascular anatomy of the left lung were found when the was not distended. During distension of the gastric pouch decreased caliber of the Thoracic loculus segmental arteries, occlusion, and dislocation of the bronchi to the basal segments of the lower lobe were demonstrated. Occlusion of the bronchi persisted after release of the distension. No bronchial or vascular changes could be registered in the upper part of the left lung. This study confirms the clinical findings that hiatus hernia may cause basal atelectasis and changes in the regional lung function localized to the basal parts of the lung.

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