Tricuspid atresia symptoms are usually seen soon after birth. Symptoms of tricuspid atresia may include: 
Blue or gray skin and lips due to low blood oxygen levels
Difficulty breathing
Tiring easily, especially during feedings
Slow growth and poor weight gain
 Some people with tricuspid atresia also develop symptoms of heart failure. Heart failure symptoms include: 
Fatigue and weakness
Shortness of breath
Swelling in the legs, ankles and feet
Swelling of the belly area, a condition called ascites
Sudden weight gain from a buildup of fluid
