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American Journal of Roentgenology, Vol 149, Issue 5, 901-906
Copyright © 1987 by American Roentgen Ray Society

Articles

Pulmonary artery false aneurysms secondary to Swan-Ganz pulmonary artery catheters

JD Dieden, LA Friloux 3rd, and JW Renner

Department of Radiological Sciences, University of California, Irvine Medical Center, Orange 92668.

Several complications from the use of balloon-tipped flow-directed (Swan-Ganz) pulmonary artery catheters are recognized. One infrequent but life-threatening complication is false aneurysm formation associated with rupture or dissection of the pulmonary artery. We report 10 cases of catheter-induced pulmonary artery false aneurysms identified during a 9-year period. Initial presentation was radiologic in six patients and clinical (hemoptysis) in four. Later chest radiographic findings consisted of a well-defined, persistent pulmonary nodule or mass (three patients) or focal, dense parenchymal consolidation (six patients) that either persisted (two patients) or evolved into a nodule or mass (four patients) adjacent to the catheter tip. Cavitation of a pulmonary mass developed in one case. Two of eight deaths were caused by pulmonary artery false aneurysm formation and rupture with subsequent fatal hemorrhage. In one patient who survived, the false aneurysm was shown by pulmonary angiography and embolized with coils and Gelfoam. We conclude that pulmonary artery false aneurysms are life-threatening complications of pulmonary artery catheters and have characteristic chest radiographic findings.
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