Right sided atrial isomerism is a rare congenital heart defect in which the right atrium is abnormally developed. It is characterized by a single atrium, a common atrioventricular valve, and a single ventricle. The right atrium is usually larger than the left atrium and may contain multiple atrial appendages. The right atrium may also be connected to the left atrium by a common atrial septum. This condition is associated with other congenital anomalies, including polysplenia, asplenia, and heterotaxy.

The symptoms of right sided atrial isomerism include:

-Abnormal heart and lung development
-Abnormal connections between the heart and lungs
-Abnormal connections between the heart and the great vessels
-Abnormal connections between the heart and the abdominal organs
-Abnormal connections between the heart and the urinary tract
-Abnormal connections between the heart and the gastrointestinal tract
-Abnormal connections between the heart and the reproductive organs
-Abnormal connections between the heart and the lymphatic system
-Abnormal connections between the heart and the nervous system
-Abnormal connections between the heart and the skin
-Abnormal connections between the heart and the muscles
-Abnormal connections between the heart and the bones
-Abnormal connections between the heart and the eyes
-Abnormal connections between the heart and the ears
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Right sided atrial isomerism is caused by a genetic mutation that affects the development of the right side of the heart. This mutation can be caused by a number of different factors, including chromosomal abnormalities, environmental factors, and genetic mutations.

Treatment for right sided atrial isomerism typically involves a combination of surgical and medical interventions. Surgical interventions may include the creation of a systemic-to-pulmonary shunt, a Fontan procedure, and/or a bidirectional Glenn procedure. Medical interventions may include the use of medications to control arrhythmias, reduce pulmonary hypertension, and/or reduce the risk of infection. Additionally, regular monitoring of the patient's condition is important to ensure that any complications are identified and treated promptly.

The risk factors for right sided atrial isomerism include:

1. Chromosomal abnormalities, such as trisomy 13, 18, and 21.

2. Maternal diabetes.

3. Maternal use of certain medications, such as anticonvulsants, during pregnancy.

4. Maternal exposure to certain environmental toxins, such as lead or mercury.

5. Maternal infections, such as rubella or cytomegalovirus.

6. Family history of right sided atrial isomerism.

At present, there is no cure for right sided atrial isomerism. However, medications can be used to manage the symptoms associated with the condition. These medications may include diuretics, ACE inhibitors, beta blockers, and anticoagulants. Additionally, surgery may be recommended to correct any associated congenital heart defects.