Porcine model of congenital heart defect with decreased pulmonary blood flow |
| |
Authors: | Xuegang Liu Chao Shi Kangwu Wang Yiyao Liu Guixin Duan Xiaohong Li Wei Song Junxiang Zhang |
| |
Institution: | (1) Department of Cardiothoracic Surgery, The 1st Affiliated Hospital of Bengbu Medical College, Bengbu, China; |
| |
Abstract: | A porcine model was produced to study the pathophysiology of congenital heart defect (CHD) with decreased pulmonary blood
flow. Twenty piglets (1–2 months) were randomly divided as mild to moderate stenosis/T1 group (n = 7) in which artificial atrial septal defect (ASD) with pulmonary artery banding generated a systolic pressure gradient
of 20–30 mmHg; severe stenosis/T group (n = 7) group with a systolic pressure gradient of ≥30–50 mmHg; and controls/C group (n = 6) underwent sham surgery. At 1 month postoperatively, 64-slice computed tomography (CT) was performed. At 2 months, left-chest
surgery was performed to measure ASD diameter, arterial blood gas, hemoglobin, and Trans-PABP. Our data show successful establishment
of porcine CHD model. ASDs in T1/T2 groups were 8.0 ± 0.5/8.9 ± 1.4 mm, respectively. Trans-PABP showed that the pressure increase in T2 was higher (P < 0.01) than in T1 group. Arterial blood PaO2 and SaO2 of T1/T2 groups were significantly lower than controls. AoD was significantly lower in T1 than in C group. Balloon dilation was significantly lower than AoD in T1/T2 groups. Besides, one animal in T1, two animals in T2 ,and one animal in C group died. We conclude that ASD with pulmonary artery banding is a successful intervention to establish
such a model, and our findings may influence the treatment of patients with similar heart disease. |
| |
Keywords: | |
本文献已被 PubMed SpringerLink 等数据库收录! |
|