[Case of negative pressure pulmonary edema after administration of sugammadex under general anesthesia with laryngeal mask airway].

We experienced a case of negative pressure pulmonary edema (NPPE) after administration of sugammadex under general anesthesia with LMA Supreme. Sugammadex was administered to a 76-year-old female patient following spontaneous ventilation. Immediately after the administration of sugammadex, laryngospasm occurred, and the patient's oxygen saturation dropped to 70%. About five minutes after the appearance of laryngospasm, she started to breathe spontaneously. However, a chest x-ray at this time showed pulmonary edema We suspected that sugammadex administration had triggered the laryngospasm, causing postoperative NPPE. When selecting a LMA under general anesthesia for airway management, we have to keep in mind the possibility of NPPE followed by laryngospasm.