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Superselective bronchial artery embolization for hemoptysis with a coaxial microcatheter system
N Tanaka1, K Yamakado, S Murashima
1Department of Radiology, Mie University, School of Medicine, Japan.
Purpose:
To compare the effectiveness and safety of superselective bronchial artery embolization with that of nonsuperselective embolization in the control of hemoptysis.
Materials And Methods:
Retrospective case analysis was done for 47 patients with hemoptysis originating from a variety of causes. In 22 patients, embolization was performed superselectively using a microcatheter inserted into the bronchial artery beyond the spinal or mediastinal branches (superselective group). In the remaining 25 patients, embolization was performed at the opening of the bronchial artery with a 5-F catheter (nonsuperselective group).
Results:
Initial hemoptysis control rates were 96% (21 of 22) in the superselective group and 88% (22 of 25) in the nonsuperselective group. Cumulative hemoptysis control rates of the superselective and nonsuperselective groups were 80% and 67% at 6 months, 79% and 56% at 1 and 2 years, and 79% and 48% at 3 years, respectively (not significant; generalized Wilcoxon test). One major complication (spinal infarction) occurred in the nonsuperselective group.
Conclusions:
Superselective embolization is safer and more effective way to control hemoptysis than the ordinary (nonsuperselective) method.