[A special type of blood pressure reduction: a case of carbon dioxide ejection syndrome]

Carbon dioxide (CO₂) ejection syndrome is common after artificial pneumoperitoneum, and it often attracts the attention of anesthesiologists because of its rapid changes in vital signs. CO₂ ejection syndrome is not uncommon in critically ill patients, and may occur after mechanical ventilation in patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD). There are few relevant reports about CO₂ ejection syndrome, and a considerable number of clinicians have little understanding of the pathological changes. A case of AECOPD patient with CO₂ ejection syndrome after endotracheal intubation was admitted to the intensive care unit (ICU) of the Affiliated Hospital of Guizhou Medical University. After treatment, such as fluid expansion, vasoactive drugs and ventilator assistance, the patient's condition improved and was transferred out of the ICU. It is expected to provide some references by summarizing the diagnosis and treatment of this case and reviewing relevant literature reports.