Table of Contents

HK J Paediatr (New Series)
Vol 19. No. 1, 2014

HK J Paediatr (New Series) 2014;19:10-14

Original Article

Retrospective Echocardiographical Analysis of Unilateral Absence of Pulmonary Artery
超聲波心電圖檢測單側肺動脈缺損的分析回顧

J Chen, L Zhao, ZL Zheng, YJ Zhou, L Zhang, GP Jiang


Abstract

Objective: To investigate the value of echocardiography in diagnosing unilateral absence of pulmonary artery (UAPA). Methods: The pulmonary artery branches were examined on the parasternal aortic root short axis and pulmonary artery branch view by echocardiography; Colour Doppler was further used to confirm the absence of left pulmonary artery and the absence of right pulmonary artery. The results of echocardiography were compared with that of surgery, X-ray angiography, magnetic resonance (MR) and computed tomography (CT). Results: The diagnosis of UAPA in 13 patients was confirmed by surgery, X-ray angiography, MR and CT. Among the 13 UAPA patients, 11 were diagnosed initially by echocardiography, and 2 missed diagnosis. For 3 of the 11 UAPA patients, pulmonary arteries were displayed ambiguously on the parasternal aortic root short axis views, but clearly on the parasternal pulmonary artery branch views. The 11 patients had significant expansion of their single pulmonary artery, and the mean ratio of the expanded pulmonary artery diameter/the main pulmonary artery diameter was 0.83±0.13. Two UAPA patients were complicated with lung dysplasia. Conclusion: The parasternal pulmonary artery branch view is more potent in diagnosing UAPA than the parasternal aortic root short axis view. The ratio of the left/right pulmonary artery diameter and the main pulmonary artery diameter around 0.8 should raise consideration for UAPA. Lung dysplasia should be considered in UAPA children.

目的:研究超聲波心電圖診斷單側肺動脈缺損的準確性。方法:以超聲波心電圖胸骨旁主動脈根部短軸及肺動脈分支切面,觀察肺動脈分支。以彩色多普勒進一步確定左側肺動脈缺損和右側肺動脈缺損。超聲波心電圖結果與手術所見,血管造影,磁力共振和CT作對比。結果:13名患有單側肺動脈缺損病人的診斷由手術所見,血管造影,磁力共振和CT確定。在這13名單側肺動脈缺損病人中,11名病人經由超聲波心電圖確診,其餘2名未能從超聲波心電圖診斷,在這11名病人中有3名病人,胸骨旁主動脈根部短軸切面顯示肺動脈模糊不清,但由肺動脈分支切面可清楚顯示這11名病人的單側肺動脈明顯擴張,擴張的肺動脈直徑/主肺動脈直徑平均比率為0.83±0.13。2名單側肺動脈缺損病人合併肺部發育不良。結論:超聲波心電圖胸骨旁主動脈根部短軸切面比肺動脈分支切面診斷單側肺動脈缺損更有效。左/右肺動脈直徑和主肺動脈直徑比率約為0.8的時候,須考慮單側肺動脈缺損。單側肺動脈缺損的患兒需注意有否合併肺部發育不良。

Keyword : Children; Echocardiography; Unilateral absence of a pulmonary artery

關鍵詞:兒童、超聲波心電圖、單側肺動脈缺損

 
 

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