“…Although massive pulmonary hemorrhage is not common (prevalence of 0.5%-2%), it is a fatal complication of PEA operation (1) . Traditional methods, such as saline, protamine administration, fresh frozen plasma infusion, and high positive expiratory pressure (PEEP), are used to control hemorrhage, but in some cases, these methods may be insufficient (2) . Although intervention with bronchial blocker to control endobronchial hemorrhage has been used since the early 90s, pulmonary functions of the patient may not controlled at the CPB support discontinuation (3) .…”