Tip is not in the appropriate position maybe the blood flow goes back Stinagra RX Stinagra RX Stinagra RX Stinagra RX Stinagra RX Stinagra RX to the left ventricle and we couldn't see the opening of the Elliott Wave so that there will be some thrombus in the lateral ventricle so that that means we need to monitor the opening of out wait and to see if we need to adjust at the tip of the cannula in the aorta so that's four we're cool that's all so any commentary from doctors hi or professor Chao okay.