Pendelluft in the brainstem tumor patients with failed spontaneous breathing test monitored by electrical impedance tomography
Wang Yumei
Tian Ye
Tian Ying
Liu Shuai
Shi Guangzhi
Zhang Linlin
Zhou Jianxin
Abstract：Objective To monitor the occurrence of "pendelluft" in the patients with brainstem tumor with failed spontaneous breathing test by electrical impedance tomography (EIT ) .Methods Blood gas analysis,EIT image and"pendelluft" of a patient who failed in repeated spontaneous breathing test after resection of bulbar,pontine and anterior pon cistern tumor were summarized,and related analysis as well as literature review were carried out.Results The patients was female and 60 years old,and was admitted to hospital with "complaints of slurred speech,difficulty in swallowing".After diagnosis of bulbar,pontine and anterior pon cistern tumor,the excision of the brainstem tumor was performed,and the patient was transferred to intensive care unit for further treatment.With the stabilization of the disease,repeated attempts of spontaneous breathing test failed,and the partial pressure of carbon dioxide (PaCO2 ) increased after weaning from ventilator.Considering secondary central hypoventilation,EIT showed that the respiratory "pendelluft" appeared when pressure support (PS) was set at 0 cmH2O and 4 cmH2O.There was no "pendelluft" when PS increased to 8 cmH2O.After a long period of breathing exercises,the patient finally succeeded in spontaneous breathing and discharged after 61 days.Conclusions In the patients with brainstem tumor,repeated spontaneous breathing tests fail due to secondary central hypoventilation.The use of EIT technology can detect the respiratory "pendelluft" in this patient,which may be one of the reasons for the increase in PaCO2,but more studies are needed.
Keywords：Brainstem tumorElectrical impedance tomographyPendelluftCentral hypoventilationThe partial pressure of carbon dioxidePressure support
Publication Date：2024-12-10
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 1042-1046 )