Late gadolinium enhancement distribution pattern of left ventricular wall in patients with dilated cardiomyopathy: a preliminary study.
10.3760/cma.j.cn112148-20200813-00638
- 白话标题:扩张型心肌病左心室游离壁心肌钆延迟强化类型初探
- 作者:
Rui LI
1
;
Chen CUI
2
;
Tian LAN
2
;
Xiu Yu CHEN
2
;
Gang YIN
2
;
Min Jie LU
2
;
Shi Hua ZHAO
2
作者信息
1. Department of Magnetic Resonance Imaging, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union, Beijing 100037, China; Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Sichuan Key Laboratory of Medical Imaging, Nanchong 637007, China.
2. Department of Magnetic Resonance Imaging, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union, Beijing 100037, China.
- 出版类型:Journal Article
- 关键字:
Cardiomyopathy, dilated;
Late gadolinium enhancement;
Magnetic resonance imaging
- 医学主题词:
Cardiomyopathy, Dilated/diagnostic imaging*;
Contrast Media;
Gadolinium;
Humans;
Magnetic Resonance Imaging, Cine;
Predictive Value of Tests;
Retrospective Studies;
Stroke Volume;
Ventricular Function, Left
- 来源:
Chinese Journal of Cardiology
2020;48(11):922-929
- 国家China
- 语言:Chinese
-
摘要:
Objective: To investigate the distribution pattern of late gadolinium enhancement (LGE) in left ventricular free wall of patients with dilated cardiomyopathy (DCM). Methods: A total of 130 consecutive DCM patients who were hospitalized in our hospital, underwent both CMR and CTA examinations and met the inclusion and exclusion criteria including negative results of coronary angiography or coronary CTA, were retrospective included in this study. The LGE pattern, extent and distribution in left ventricular free wall were analyzed. Results: Left ventricular free wall LGE was detected in 56 out of 130 DCM patients. LGE was observed in both septal and free wall in 53 out of 56 patients with LGE (94.6%). Prevalence of NYHA classification Ⅲ/Ⅳ, intraventricular block, paroxysmal ventricular tachycardia, and secondary mitral insufficiency was significantly higher, while left ventricular ejection fraction was significantly lower, left ventricular end-diastolic/systolic volume, left ventricular end-diastolic/systolic volume index and left ventricular end-diastolic diameters values were larger in patients with LGE than without LGE (all P<0.05). In terms LGE pattern among these 56 patients, percent of involved myocardial segments in patients with subepicardial LGE (n=19) was significantly higher than patients with intermural LGE (n=30), patients with transmural LGE (n=21), and patients with subendocardial LGE (n=9)(60.8%(127/209) vs. 32.4%(107/330), 32.5%(75/231), 26.3%(26/99), respectively, all P < 0.01). Transmural LGE was most likely to involve the left ventricular inferior lateral basal (18/21) and mid (13/21) segment, followed by anterior lateral basal (15/21) and mid (11/21) segments and inferior mid segment (9/21). Subepicardial LGE was more likely to occur in the inferior lateral basal (13/19) and mid (16/19) segment, anterior lateral basal (13/19) and mid (15/19) segment, anterior lateral basal (13/19) and mid (15/19) segment, lateral apical (13/19), anterior and inferior mid segment (12/19 and 10/19), and apical segment (15/19 and 10/19). Intermural LGE mostly involved the anterior and inferior basal (19/30, 16/30) and mid (18/30 and 14/30) segment. There were 33 cases of single LGE pattern and 23 cases of multiple LGE pattern. Percent of involved myocardial segments was significantly higher in multiple LGE group than single LGE group (60.9% (154/253) vs. 49.9%(181/363), P = 0.007). Of 130 patients, 23 received heart transplantation, of which 6 patients had septal LGE alone and 17 patients had septal and free wall LGE. The rate of heart transplantation in the latter group was higher (32.1% (17/53)vs. 13.6%(6/44), P=0.034). Conclusions: There are several LGE distribution patterns in left ventricular wall among DCM patients.
