Post-hypoxic brain injury (Lance Adams Syndrome); a case report and literature review

Action myoclonus is a rare complication that may follow after a successful cardiac resuscitation event. Lance Adams Syndrome, also known as chronic post-hypoxic myoclonus is an action myoclonus seen in patients who have regained consciousness after undergoing a cardiopulmonary arrest. It develops after days to weeks following the event. There are less than 155 reported cases in the world. Here we present the case of an 18 year old female who had complains of jerky movements in her upper limbs bilaterally after suffering two episodes of cardiac arrests. This case was diagnosed as Lance Adams Syndrome taking into accord a detailed history of hypoxic brain injury, clinical presentation, and appropriate neuroimaging studies. A correct and early diagnosis is essential and directly related to a positively related functional outcome of the patient. Recognition of post-hypoxic myoclonus depends on the awareness that such a syndrome exists, and the patients’ outcome relies on early diagnosis and appropriate management.