Atrioventricular septal defect history and symptoms

Pediatric symptoms
Generally, infants present atrioventricular septal defect symptoms within the first month of life. These symptoms include:
 * Congestive heart failure
 * Tachypnea
 * Failure to thrive
 * Fatigue
 * Cyanosis
 * Lack of appetite/poor feeding
 * Frequent respiratory infections
 * Pulmonary vascular disease
 * Extremis with acidosis
 * Cyanosis

Adult symptoms
Some forms of atrioventricular septal defect, such as partial or incomplete, are asymptomatic until later in childhood. Symptoms include:
 * Moderate to severe mitral regurgitation
 * Heart murmur
 * Left-to-right shunting of blood
 * Pulmonary disease
 * Frequent lower respiratory infections
 * Progressive cardiac enlargement
 * LV dysfunction
 * Progressive exercise intolerance
 * Palpitations caused by atrial arrhythmia
 * Sustained supraventricular tachycardia
 * Atrial flutter
 * Atrial fibrillation
 * Congestive heart failure