The required effect may be obtained after the proper timing relation will be found between the CABG and the positioning of patients head lower than his legs

Thrombus should be removed by left ventriculotomy or if possible by left atriostomy ..large mural thrombus are generally associated with LV dysfunction.. And left ventriculotomy may further reduced the LV function. So if possible thrombus removal by left atriostomy may be preferable...