• Parineeta Thapa, Asish Subedi, Anjali Poudel, and Pankaj Baral.
• Department of Anaesthesiology and Critical Care, B. P. Koirala Institute of Health Sciences, Dharan, Koshi, Nepal. parithapa2002@gmail.com.
• BMC Anesthesiol. 2019 Aug 14; 19 (1): 152.

BackgroundRespiratory adverse events are not uncommon in the post-anesthesia care unit (PACU) following general anesthesia. In this regard, hyperventilation leading to apnea and desaturation is a rare entity. Here we have reported a case of a 15-year-old girl who, following an uneventful general anesthesia, developed severe hyperventilation leading to apnea and desaturation in the PACU.Case PresentationThe 15-year-old girl underwent cortical mastoidectomy under general anesthesia. After a smooth anesthesia and an uneventful early recovery, she developed hyperventilation after about 15 min in the PACU. The symptom was severe enough to lead to apnea, desaturation and severe respiratory alkalosis. She required bag and mask ventilation and the symptoms resolved only transiently with propofol sedation. Finally, she responded to intravenous haloperidol and did not have any further episode after receiving haloperidol.ConclusionHyperventilation after a smooth recovery from anesthesia is not a common presentation. In this article we have tried to discuss the possible cause of such symptom in our patient and how we successfully managed this case. We have also proposed an algorithmic approach to diagnose and manage such cases in the PACU.

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