A 21-year old male presents with exeional dyspnea, raised JVP and loud P2. ECG shows right axis detion. All of the following conditions are possible except’
Correct Answer: Ostium primum
Description: An ostium primum atrial septal defect (ASD) occurs when then atrial septum near the atrioventricular valves has a communication between the two atrium causing a left to right shunt. This rarely develops into Eisenmenger's syndrome if pulmonary hypeension develops reversing the direction of the shunt to right to left. Ref Davidson 23rd edition pg 453
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