TORONTO -- Goaltender Jonas Gustavsson left his start Wednesday with the Toronto Maple Leafs ' American Hockey League affiliate after experiencing an elevated heart rate .
Goaltender Jonas Gustavsson underwent two heart procedures last season .
TORONTO -- Goaltender Jonas Gustavsson , who underwent two heart procedures last season , left his start Wednesday with the Toronto Maple Leafs ' American Hockey League affiliate after experiencing an elevated heart rate .