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[Clinical and cardiac imaging characteristics of patients with left ventricular apical hypoplasia]
Chao-wu Yan1, Jian-rong Li, Shi-hua Zhao
1Department of Radiology, Cardiovascular Institute and Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China. chaowu_yan@yahoo.com.cn
Insights
Left ventricular apical hypoplasia (LVAH) presents with non-specific symptoms. Key imaging findings include a truncated, spherical left ventricle, abnormal papillary muscles, and right ventricle wrapping around the apex.
Area of Science:
- Cardiology
- Cardiac Imaging
- Congenital Heart Disease
Background:
- Left ventricular apical hypoplasia (LVAH) is a rare congenital cardiac anomaly.
- Understanding its clinical and imaging features is crucial for diagnosis and management.
Purpose of the Study:
- To analyze the clinical presentation and cardiac imaging characteristics of patients diagnosed with LVAH.
- To identify typical imaging findings associated with LVAH.
Main Methods:
- A cohort of seven LVAH patients (age 6-44 years) was studied between 2008 and 2012.
- Diagnostic tools included transthoracic echocardiogram, cardiovascular MRI, cardiovascular CT, and cardiac catheterization.
Main Results:
- Clinical symptoms such as chest discomfort and precordial murmurs were observed.
- Electrocardiogram revealed atrial fibrillation in some patients.
- Imaging showed a truncated, spherical left ventricle with reduced longitudinal diameter, interventricular septum bulging, abnormal papillary muscles, an elongated right ventricle, and focal fat replacement in the apical wall.
Conclusions:
- Clinical symptoms of LVAH are often non-specific.
- Characteristic imaging findings include a truncated/spherical left ventricle, abnormal papillary muscle origin, right ventricle wrapping around the apex, and apical fat replacement.
Objective:
To analyze the clinical and cardiac imaging characteristics of patients with left ventricular apical hypoplasia (LVAH).
Methods:
From January 2008 to January 2012, seven patients [3 male/4 female, age: 6 - 44 (19.9 ± 14.2) years] with LVAH were included in this cohort. Transthoracic echocardiogram was performed in all patients, cardiovascular MRI was performed in 3 patients and cardiovascular CT in another 2 patients. In addition, one LVAH patient underwent cardiac catheterization and angiography examination.
Results:
Four out of 7 patients complained chest discomfort. Precordial murmur was heard in 3 patients. Atrial fibrillation was evidenced by electrocardiogram in 3 patients. Left ventricular end-diastolic diameter [(57.9 ± 11.6) mm] increased while left ventricule (LV) longitudinal diameter reduced in all patients. Left ventricular systolic function was reduced in 2 patients and mean LVEF was (47.6 ± 17.2)%. The interventricular septum bulged towards the right, and the ventricular septum thickness was (7.3 ± 1.2) mm. The papillary muscles were dominant on the flattened LV anteroapical region. The right ventricle elongated and wrapped around the hypoplastic left ventricular apex, and the dimension of right ventricle was (19.7 ± 7.6) mm. Focal fat replacement of the left ventricular apical wall was evidenced in 5 patients underwent cardiovascular MRI or CT examinations.
Conclusions:
Clinical symptoms are non-specific in LVAH patients. Truncated and spherical LV, abnormal origin of papillary muscles in the flattened LV anterior apex and an elongated right ventricle wrapping around the LV apex as well as focal fat replacement of the left ventricular apical wall are typical imaging characteristics of LVAH.
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