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2. Atrial septal defect - Wikipedia

   en.wikipedia.org/wiki/Atrial_septal_defect

   Atrial septal defect (ASD) is a congenital heart defect in which blood flows between the atria (upper chambers) of the heart.Some flow is a normal condition both pre-birth and immediately post-birth via the foramen ovale; however, when this does not naturally close after birth it is referred to as a patent (open) foramen ovale (PFO).

3. Atrioventricular septal defect - Wikipedia

   en.wikipedia.org/wiki/Atrioventricular_septal_defect

   When holes form between the chambers, as in AVSD, the pools can mix. Consequently, arterial blood supplies become less oxygenated than normal, causing ischemia and cyanosis in distal tissues. [3] To compensate, the heart must pump a larger volume of blood to deliver enough oxygen, leading to cardiac enlargement and hypertrophy. [5]

4. Atrial septostomy - Wikipedia

   en.wikipedia.org/wiki/Atrial_septostomy

   Atrial septostomy is a surgical procedure in which a small hole is created between the upper two chambers of the heart, the atria.This procedure is primarily used to palliate dextro-Transposition of the great arteries or d-TGA (often imprecisely called transposition of the great arteries), a life-threatening cyanotic congenital heart defect seen in infants.

5. Congenital heart defect - Wikipedia

   en.wikipedia.org/wiki/Congenital_heart_defect

   A congenital heart defect (CHD), also known as a congenital heart anomaly, congenital cardiovascular malformation, and congenital heart disease, is a defect in the structure of the heart or great vessels that is present at birth. [7] A congenital heart defect is classed as a cardiovascular disease. [10]

6. Lutembacher's syndrome - Wikipedia

   en.wikipedia.org/wiki/Lutembacher's_syndrome

   Lutembacher's syndrome is caused by either birth defects where the heart fails to close all holes in the walls between the atria or from an episode of rheumatic fever where damage is done to the heart valves such as the mitral valve and resultant in an opening of heart wall between atria.

7. Tetralogy of Fallot - Wikipedia

   en.wikipedia.org/wiki/Tetralogy_of_Fallot

   Diagram of a healthy heart and one with tetralogy of Fallot: Specialty: Cardiac surgery, pediatrics: Symptoms: Episodes of bluish color to the skin, difficulty breathing, heart murmur, finger clubbing [2] Complications: Irregular heart rate, pulmonary regurgitation [3] Usual onset: From birth [4] Causes: Unknown [5] Risk factors