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Robert J. Cowan, MD; Dwight B. Short, MD; C. Douglas Maynard, MD

JAMA. 1974;227(10):1165-1166.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

UNILATERAL absence of pulmonary blood flow as demonstrated by particulate-perfusion lung-imaging techniques is a well-recognized phenomenon.¹ Multiple causes have been described, including bronchial occlusion secondary to bronchogenic carcinoma and foreign-body inhalation.^1,2 Bronchial obstruction with resulting hypoventilation has been shown to decrease promptly pulmonary blood flow. To our knowledge, however, the effects of acute bronchial obstruction from an improperly positioned endotracheal tube, have not been described previously. This report documents such a case and demonstrates the reversibility of this phenomenon.

Report of a Case

A 76-year-old patient was referred to the Nuclear Medicine Laboratory for perfusion lung imaging because of suspected pulmonary emboli. Approximately three hours before the study, he had experienced increasing dyspnea. An endotracheal tube had been inserted. After 2 millicuries of macroaggregated serum albumin labeled with technetium 99m was administered intravenously, images of the chest were obtained with an Anger scintillation camera (Fig 1, left). These . . . [Full Text PDF of this Article]

Author Affiliations
From the Department of Radiology, Bowman Gray School of Medicine, Winston-Salem, NC 27103.

Footnotes
Reprint requests to Department of Radiology, Bowman Gray School of Medicine, S Hawthorne Rd, Winston-Salem, NC 27103 (Dr. Cowan).

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