摘要
Introduction:With the continuous progress being made in medicine and surgery,increasingly more advanced technology and monitoring equipment are being used in anesthesia,end-tidal carbon dioxide(PETCO_(2))monitoring revealed serious complications of cardiothoracic surgery.Case presentation:A 3-year-old boy with a body weight of 15 kg presented with a>1-month history of a heart murmur.At the moment of arterial catheter ligation,the PETCO_(2) decreased from 37 to 15 mmHg,while the blood pressure,heart rate,and airway resistance did not change significantly.After re-separation of the ligation catheter,the surgeons carefully exposed the ductus and left pulmonary artery again and ligated the ductus arteriosus.Conclusion:This case suggests that PETCO_(2) monitoring reflects the circulatory status and pulmonary blood flow.
