Heart-hand syndrome, Spanish type

Autosomal dominant - en

Heart-hand syndrome, Spanish type is a rare genetic disorder characterized by the combination of cardiac anomalies and skeletal abnormalities of the hands and feet. This condition is part of a group of disorders known as heart-hand syndromes, which involve a variety of heart and limb defects. The Spanish type is distinguished by its unique genetic cause and the specific pattern of heart and limb features observed in affected individuals.

Clinical Features

The hallmark features of Heart-hand syndrome, Spanish type, include congenital heart defects and limb malformations. The cardiac anomalies often involve structural defects of the heart, such as atrial septal defects (ASD), ventricular septal defects (VSD), and other forms of congenital heart disease that affect the normal flow of blood through the heart. The skeletal abnormalities primarily affect the development of the bones in the hands and feet, leading to deformities such as brachydactyly (shortening of the fingers and toes), syndactyly (fusion of fingers or toes), and other variations in the structure and number of bones in the limbs.

Genetics

Heart-hand syndrome, Spanish type, is inherited in an autosomal dominant manner, meaning that only one copy of the altered gene in each cell is sufficient to cause the disorder. The specific gene associated with this condition has been identified on a region of chromosome 1. Mutations in this gene disrupt the normal development of the heart and limbs during embryonic growth.

Diagnosis

Diagnosis of Heart-hand syndrome, Spanish type, is based on the clinical presentation of heart and hand anomalies. Genetic testing can confirm the diagnosis by identifying the characteristic mutation associated with this syndrome. Additionally, detailed cardiac evaluation, including echocardiography and magnetic resonance imaging (MRI), is used to assess the extent and nature of the heart defects. Radiographic imaging of the hands and feet is also performed to evaluate the skeletal abnormalities.

Management

Management of Heart-hand syndrome, Spanish type, involves a multidisciplinary approach to address both the cardiac and skeletal anomalies. Treatment may include surgical correction of heart defects and orthopedic interventions to improve limb function and appearance. Ongoing cardiac monitoring is necessary to assess heart function and manage complications. Genetic counseling is recommended for affected individuals and their families to discuss the hereditary nature of the disorder and the risk of transmission to offspring.

Prognosis

The prognosis for individuals with Heart-hand syndrome, Spanish type, varies depending on the severity of the heart defects and the extent of limb abnormalities. With appropriate medical and surgical management, many affected individuals can lead active and productive lives. However, lifelong monitoring of heart function is essential to manage potential cardiac complications.

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