Applicability study of balloon pulmonary angioplasty in residual pulmonary hypertension of chronic thromboembolic pulmonary hypertension after pulmonary endarterectomy
10.3760/cma.j.cn112149-20231012-00287
- VernacularTitle:球囊肺动脉成形术在慢性血栓栓塞性肺动脉高压内膜剥脱术后持续肺动脉高压中的应用研究
- Author:
Jinzhi WANG
1
;
Xincao TAO
;
Wanmu XIE
;
Shuai ZHANG
;
Zhu ZHANG
;
Yunwei ZHAO
;
Yishan LI
;
Ana JIANG
;
Hao WANG
;
Qiang HUANG
;
Zhenguo DI
Author Information
1. 中日友好医院呼吸中心 呼吸与危重症医学科 国家呼吸中心，北京 100029
- Keywords:
Thromboembolism;
Pulmonary hypertension;
Balloon pulmonary angioplasty;
Pulmonary endarterectomy;
Complications
- From:
Chinese Journal of Radiology
2024;58(3):318-323
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the safety and efficacy of balloon pulmonary angioplasty (BPA) for residual pulmonary hypertension (PH) of chronic thromboembolic pulmonary hypertension(CTEPH) after pulmonary endarterectomy (PEA).Methods:Patients diagnosed as PH after PEA in China-Japan Friendship Hospital from Oct 2016 to Jun 2022 were included. The indication for BPA was decided on the basis of a consensus of the multi-disciplinary team for all patients with CTEPH. Before treatment, the patient′s exercise tolerance and pulmonary artery flow parameters were evaluated. A comparative analysis of various parameters before BPA treatment and at the last BPA was conducted. 6-min walk distance (6MWD) was analyzed using the paired Wilcoxon test; N-terminal pro-brain natriuretic peptide (NT-proBNP), mixed venous oxygen saturation, mean pulmonary arterial pressure (mPAP), cardiac index (CI) and pulmonary vascular resistance (PVR) were compared using the paired-samples t-test. WHO functional class was compared using McNemar′s test. Results:Twenty patients with a total of 130 vessels underwent 46 sessions of BPA treatment. The postoperative 6-minute walk distance (6MWD) [447 (415, 485) m] showed a significant improvement compared to the preoperative baseline [389 (335, 470) m] ( Z=6.52, P<0.05), Postoperative mixed venous oxygen saturation (72.0%±1.9%) showed a significant improvement compared to the preoperative levels (64.0%±2.7%) ( t=2.14, P<0.05).Postoperatively, plasma NT-proBNP [(351.9±129.9) pg/ml], mPAP [(24.2±1.9) mmHg], and PVR [(3.0±1.4) WU] significantly decreased compared to preoperative levels [(982.5±426.2) pg/ml, (33±2.1) mmHg, (8.0±1.6) WU)] ( t=3.38, 1.22, 2.10, P<0.05 for all). Postoperatively, there was a significant improvement in WHO functional class (Ⅰ，Ⅱ，Ⅲ，Ⅳ: 14, 4, 2, 0 cases) compared to preoperative status (Ⅰ，Ⅱ，Ⅲ，Ⅳ: 0, 13, 5, 2 cases) ( χ2=20.17, P<0.05). Four cases of pulmonary artery dissection and one episode of hemoptysis occurred postoperatively, with no other complications reported. Conclusions:BPA can significantly improve exercise tolerance and hemodynamic parameters for residual PH after PEA. BPA is a relatively safe and effective treatment for residual PH after PEA.
