Coronary Artery Bypass Graft (CABG) Surgery Practice Test

VA-ECMO after CABG is used as temporary circulatory and oxygenation support when the heart cannot maintain adequate output despite other measures. It works by draining venous blood, oxygenating it, and returning it to the arterial system, providing both heart and lung support. This gives the recovering myocardium time to regain function or serves as a bridge to a decision, transplant, or longer-term solution in cases of refractory cardiogenic shock or severe LV dysfunction that doesn’t respond to inotropes or other devices. It is not a permanent heart replacement, and it isn’t limited to pediatric patients; it’s a life-saving option in adults as well for acute post-CABG complications. It provides more than just oxygenation—it delivers systemic circulatory support that maintains perfusion while the heart recovers.