8th March 2024

A 26-year-old male undergoes a private health check-up and is found to have a murmur on auscultation.

A 26-year-old male undergoes a private health check-up and is found to have a murmur on auscultation. He reports no cardiovascular related symptoms but his mother is known to have an atrial septal defect. His 12-lead ECG reveals a right bundle branch block with right axis deviation and he is referred for a Cardiology opinion and outpatient transthoracic echocardiogram. Which of the following abnormalities is the initial finding in ostium secundum defect?

Select the SINGLE most appropriate option from the list below. Select ONE option only.