WELLINGTON: Scans have shown Blues and All Blacks halfback Piri Weepu has a small hole in his heart, which could have led to the minor stroke he suffered this month.

Weepu, 30, is expected to make a full recovery but has been ruled out of Super Rugby for at least a month.

Blues and All Blacks halfback Piri Weepu. Credit:Getty Images

A Blues spokesman confirmed on Friday that further scans had revealed the hole, and Weepu had an appointment scheduled with cardiologists next week.

It was possible minor heart surgery would be required, the spokesman said.