Circulation Journal
Online ISSN : 1347-4820
Print ISSN : 1346-9843
ISSN-L : 1346-9843
Clinical Investigation
Dilatation of Bronchial Arteries Correlates With Extent of Central Disease in Patients With Chronic Thromboembolic Pulmonary Hypertension
Hidefumi ShimizuNobuhiro TanabeJiro TeradaMasahisa MasudaSeiichiro SakaoYasunori KasaharaYuichi TakiguchiKoichiro TatsumiTakayuki Kuriyama
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2008 Volume 72 Issue 7 Pages 1136-1141


Background Dilatation of the bronchial arteries is a well-recognized feature in patients with chronic thromboembolic pulmonary hypertension (CTEPH). The purpose of the current study was to use computed tomography (CT) to assess the relationship between dilated bronchial arteries and the extent of thrombi, and to evaluate the predictive value of the former for surgical outcome. Methods and Results Fifty-nine patients with CTEPH and 16 with pulmonary arterial hypertension (PAH) were retrospectively evaluated. The total cross-sectional area of bronchial arteries was measured by CT and its relationship with the central extent of thrombi or surgical outcome was assessed. The total area of the bronchial arteries in CTEPH patients was significantly larger than that in PAH patients (median [range], 6.9 [1.7-29.5] mm2 vs 3.2 [0.8-9.4] mm2), with the total area of bronchial arteries correlating with the central extent of thrombi. In patients who had undergone pulmonary thromboendarterectomy (PTE) (n=22), the change in PaO2 after surgery had a tendency to correlate with the total area of the bronchial arteries. Conclusion The total cross-sectional area of the bronchial arteries correlated with the extent of central disease in patients with CTEPH, and it might predict gas exchange improvement after PTE. (Circ J 2008; 72: 1136 - 1141)

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