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. 1990 Aug;45(8):637–638. doi: 10.1136/thx.45.8.637

The biphasic spirogram: a clue to unilateral narrowing of a mainstem bronchus.

A D Gascoigne 1, P A Corris 1, J H Dark 1, G J Gibson 1
PMCID: PMC462651  PMID: 2099756

Abstract

Two patients with narrowing of a mainstem bronchus each showed two unusual functional features that are likely to be characteristic of this condition. The maximum inspiratory flow-volume curve showed an end inspiratory "tail" and the forced expiratory spirogram had a biphasic shape with normal initial curvature but a "straight line" appearance in later expiration. In one patient relief of the bronchial stenosis by the insertion of a stent restored normal contours to the spirogram and flow-volume curves.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Gelb A. F., Tashkin D. P., Epstein J. D., Szeftel A., Fairshter R. Physiologic characteristics of malignant unilateral main-stem bronchial obstruction. Diagnosis and Nd-YAG laser treatment. Am Rev Respir Dis. 1988 Dec;138(6):1382–1385. doi: 10.1164/ajrccm/138.6.1382. [DOI] [PubMed] [Google Scholar]
  2. Jett J. R. The flow-volume loop and main-stem bronchial obstruction. Am Rev Respir Dis. 1988 Dec;138(6):1379–1380. doi: 10.1164/ajrccm/138.6.1379. [DOI] [PubMed] [Google Scholar]
  3. Shim C., Corro P., Park S. S., Williams M. H., Jr Pulmonary function studies in patients with upper airway obstruction. Am Rev Respir Dis. 1972 Aug;106(2):233–238. doi: 10.1164/arrd.1972.106.2.233. [DOI] [PubMed] [Google Scholar]

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