Large PDA leads to ?

Ans. is 'd' i.e., All of above Patent ductus aeriosus (PDA) Small PDA may not cause any complication but large defect if untread may leads to : Pulmonary hypeension Left to Right shunt leads to too much circulation of blood in lung which leads to pulmonary hypeension. Eisenmenger's syndrome - Large standing pulmonary hypeension leads to permanent lung damage and causes Right to Left shunt. Endocarditis. Arrhythmia Enlargement of hea due to PDA increase risk of arrhythmias