Shone's syndrome

Shone's syndrome
Synonyms	Shone's complex
Pronounce	N/A
Specialty	N/A
Symptoms	Heart murmur, shortness of breath, fatigue, cyanosis
Complications	Heart failure, pulmonary hypertension
Onset	Congenital
Duration	Chronic
Types	N/A
Causes	Congenital heart defect
Risks	Genetic predisposition
Diagnosis	Echocardiogram, cardiac MRI, cardiac catheterization
Differential diagnosis	Aortic stenosis, mitral valve stenosis
Prevention	N/A
Treatment	Surgical repair, balloon valvuloplasty, medication
Medication	N/A
Prognosis	Variable, depends on severity and treatment
Frequency	Rare
Deaths	N/A

Shone's Syndrome is a rare congenital heart disease characterized by multiple left-sided heart obstructions. The syndrome was first described by Dr. John Shone in 1963. The four classic lesions associated with Shone's Syndrome include supravalvular mitral membrane, parachute mitral valve, subaortic stenosis, and coarctation of the aorta. However, not all patients with Shone's Syndrome will have all four lesions.

Etiology

The exact cause of Shone's Syndrome is unknown. It is believed to be a result of abnormal development of the heart during the first 8 weeks of pregnancy. The condition is not thought to be inherited.

Symptoms

The symptoms of Shone's Syndrome can vary greatly depending on the severity of the condition and the number of lesions present. Common symptoms include shortness of breath, fatigue, poor weight gain, and a heart murmur. In severe cases, symptoms may be present at birth.

Diagnosis

Diagnosis of Shone's Syndrome is typically made through a combination of physical examination, echocardiogram, and cardiac catheterization. An echocardiogram can provide detailed images of the heart and its structures, while a cardiac catheterization can measure pressures within the heart chambers and blood vessels.

Treatment

Treatment for Shone's Syndrome is typically surgical and aims to relieve the obstructions. The type of surgery performed will depend on the number and location of the lesions. In some cases, multiple surgeries may be required.

Prognosis

The prognosis for individuals with Shone's Syndrome can vary greatly depending on the severity of the condition and the success of surgical interventions. With early diagnosis and appropriate treatment, many individuals with Shone's Syndrome can lead normal lives. See also:

• Congenital heart disease
• Mitral valve
• Aortic coarctation
• Subaortic stenosis