Numerical simulation of a self-powered Fontan based on venturi effect
10.7507/1007-4848.201812051
- VernacularTitle:基于文丘里效应自身动力性 Fontan 的数值模拟
- Author:
ZHU Fang
1
,
2
;
WEN Chen
1
,
2
;
SHI Guocheng
1
,
2
;
ZHANG Qian
1
,
2
;
LIU Jinlong
1
,
2
;
ZHANG Hang
3
,
4
;
ZHU Zhongqun
1
,
2
;
CHEN Huiwen
1
,
2
Author Information
1. Department of Cardiothoracic Surgery, Shanghai Children&rsquo
2. s Medical Center, Shanghai Jiaotong University School of Medicine, Shanghai, 200127, P.R.China
3. Department of Cardiothoracic Surgery, Puer People&rsquo
4. s Hospital, Puer, 665000, Yunnan, P.R.China
- Publication Type:Journal Article
- Keywords:
Computational fluid dynamics;
venturi effect;
Fontan procedure
- From:
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery
2019;26(9):895-898
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effects of a self-powered conduit in different patients’ models who underwent extracardiac Fontan procedure. Methods Four children who underwent extracardiac Fontan procedure in Shanghai Children's Medical Center from 2011 to 2017 year were selected. Venae cavae and pulmonary arteries were reconstructed using Mimics 19.0®. In silico, a venturi conduit was introduced to the anastomosis of venae cavae and pulmonary artery. Then computational fluid dynamics simulation was performed using patients’ clinical data. Results When inferior venae cavae were directly to or to the left of superior venae cavae, the venturi conduit could assist the return of venous blood and reduce the pressures of venae cavae about 0.5 mm Hg. And the pressure differences between venae cavae and pulmonary arteries were about –0.7 mm Hg, which suggested that the conduit could generate right ventricle-like effect. Conclusion The venturi conduit can reduce the pressure of venae cavae, increase pulmonary circulation flow and improve Fontan hemodynamics.
