Vasoplegic syndromeVasoplegic syndrome or vasoplegia syndrome is a postperfusion syndrome characterized by low systemic vascular resistance and a high cardiac output.CausesVPS occurs more frequently after on pump CABG surgery versus off pump CABG surgery. Hypothermia during surgery may also increase ones risk of developing VPS post operatively.DiagnosisDefinitionVasoplegic syndrome is defined as low systemic vascular resistance and high cardiac output within the first 4 postoperative hours.TreatmentThere is some evidence to support the use of methylene blue in the treatment of this condition.EpidemiologyOne case series reports a rate of 1 in 120 cases.