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Mean Flow
Assess Mean Flow to Confirm Graft Patency
Normal 30 ml/min (or higher) Mean Flow = Patent Graft
See Table, p. 21 of CABG handbook for a compilation from the scientific literature of the “Normal Flow Range” for various coronary grafts.
Flow under 5 ml/min = Graft in Trouble
Look for kinks, twists in the graft, low MAP, vasospasm.
Redo anastomosis if indications point to technical error.
Factors Affecting Flow
Look for kinks, twists in the graft, low MAP, vasospasm.
Redo anastomosis if indications point to technical error.
Assess other factors that may account for a lowered flow:
Further Reading
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