We report the case of a 50-year-old man who experienced acute cardiac arrest after transsphenoidal resection of a pituitary adenoma. The cardiopulmonary reanimation was successful, but following cranial computed tomography (CT) scans showed an unusual complication of the cardiopulmonary reanimation: the inadvertent intracranial placement of the Wendl tube. Because the endoscopic transsphenoidal approach to the sellar region is a routine neurosurgical procedure, we would like to alert physicians of this unusual complication during cardiopulmonary reanimation.