Using the capnogram to assess pulmonary perfusion during a lobectomy: case studies

  • Jinjun Shu
  • Kexian Zhang
  • Yiding ChenEmail author
  • Hongwei Zhang
  • Jiang Zou
  • Yumin Tang
  • Jifu Dong
  • Yi Du
Original Research


Capnography is an effective and non-invasive method for monitoring patients during general anesthesia and can reflect the changes in both the respiratory function as well as the circulatory function. In this paper, we present four cases of lobectomy in which we observed a “chair-like” waveform on performing capnography after the surgery. In all the cases, the appearance of this “chair-like” waveform led to the suspicion of a blockage in the pulmonary artery perfusion, which was then confirmed to be an obstruction in the pulmonary artery on further investigation. This suggests that during lobectomy, capnography can help confirm that the pulmonary circulation is unobstructed. We believe that it is very important to observe the changes of end-tidal carbon dioxide pressure and capnogram during one-lung ventilation, particularly in cases of pulmonary artery anastomosis.


Capnography End-tidal carbon dioxide pressure (PetCO2Lobectomy Pulmonary artery perfusion 


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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.Department of Anesthesiology, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, School of MedicineUniversity of Electronic Science and Technology of ChinaChengduChina

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