Hemodynamic Effects of Banding Width on Pulmonary Artery
10.16156/j.1004-7220.2023.03.10
- VernacularTitle:环缩宽度对肺动脉血流动力学影响
- Author:
Weiru LUO
1
;
Jiwen XIONG
2
,
3
,
4
;
Zhirong TONG
2
,
3
,
4
;
Pingping YU
1
;
Yanjun SUN
1
;
Jinlong LIU
2
,
3
,
4
Author Information
1. Department of Cardiothoracic Surgery Shanghai Children’ s Medical Center, Shanghai Jiao Tong University School of Medicine
2. Department of Cardiothoracic Surgery
3. Institute of Pediatric Translational Medicine
4. Shanghai Engineering Research Center of Virtual Reality of Structural Heart Disease, Shanghai Children’ s Medical Center, Shanghai Jiao Tong University School of Medicine
- Publication Type:Journal Article
- Keywords:
pulmonary artery banding ( PAB);
banding width;
hemodynamics;
computational fluid dynamics(CFD);
computer-aided design (CAD)
- From:
Journal of Medical Biomechanics
2023;38(3):E493-E499
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effects of banding width on hemodynamic characteristics of pulmonary artery (PA) by constructing pulmonary artery banding (PAB) models with different widths. Methods Based on clinical practice, with the same banding position and degree, computer-aided design (CAD) was utilized to reconstruct three-dimensional PAB models with different banding widths (2, 3, 4, 5 mm). Hemodynamic characteristics of the models with different banding widths, including pressure, streamlines, energy loss, energy efficiency and blood flow distribution ratio, were compared and analyzed through computational fluid dynamics (CFD). Results The pressure of PA decreased significantly, while the change of banding width had no significant effects on the pressure drop level at banding position. With the increase of banding width, the energy loss decreased, and the energy efficiency showed an upward trend. The blood flow of the left PA raised, and the ratio of blood flow distribution between the left PA and right PA increased, with the maximum reaching up to 2.28 : 1. Conclusions The increase of banding width can reduce the energy loss of PA and improve the energy efficiency of blood flow, but it will lead to the imbalance of blood flow distributions between the left and right lungs. Both the balance of blood flow distribution and the energy loss should be considered in choice for banding width of PAB. The virtual design of PAB surgery based on CAD and CFD will assist individualized banding width selection in future.
