Evaluation of pulmonary arterial vascular impedance in fetuses with tetralogy of Fallot by Doppler ultrasound
10.3760/cma.j.cn131148-20230928-00147
- VernacularTitle:多普勒超声评估法洛四联症胎儿肺动脉阻力
- Author:
Yushan LIU
1
;
Shi ZENG
;
Ran XU
;
Dan ZHOU
;
Yang YANG
;
Ganqiong XU
Author Information
1. 中南大学湘雅二医院超声诊断科，长沙 410011
- Keywords:
Echocardiography;
Pulmonary arterial impedance;
Tetralogy of Fallot;
Fetus;
Pulsatility index
- From:
Chinese Journal of Ultrasonography
2024;33(3):236-241
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To evluate the vascular impedance of the pulmonary arteries in fetuses with tetralogy of Fallot (TOF) by Doppler echocardiography.Methods:A total of 42 fetuses with TOF (TOF group) and 84 gestational age-matched normal fetuses(control group)were prospectively collected from August 2022 to January 2023 in the Second Xiangya Hospital of Central South University. The severity of TOF was classified into mild TOF (Z score≥-2), moderate TOF (-40.05). However, DLPA-PI decreased significantly in severe TOF compared with mild TOF ( P<0.05). Conclusions:Fetuses with TOF present increas vascular impedance in pulmonary trunk and decreased impedance in distal pulmonary artery branches. Further large and follow-up studies are needed to demonstrate the associations between the changes in vascular impedance and the development of pulmonary artery in patients with TOF.
