NDLI: Application of Electrical Impedance Tomography for Continuous Monitoring of Retroperitoneal Bleeding After Blunt Trauma

Content Provider	Springer Nature Link
Author	Shuai, Wanjun You, Fusheng Zhang, Hongyi Zhang, Wei Fu, Feng Shi, Xuetao Liu, Ruigang Bao, Tingyi Dong, Xiuzhen
Copyright Year	2009
Abstract	Retroperitoneal bleeding is commonly associated with blunt trauma to the abdomen. Current medical tools cannot be used for continuous monitoring of the bleeding. In the study, electrical impedance tomography (EIT) was applied to monitoring the retroperitoneal bleeding of an animal model. Six healthy swine were used. The process of retroperitoneal bleeding was simulated by the continuous injection of anticoagulated blood. For each subject, total blood of 200 mL or more was injected within different time periods ranging from tens of minutes to two hours. The bleeding was detected and monitored continuously by EIT system with 16 electrodes at a rate of one image per second. EIT images were reconstructed by dynamic back-projection algorithm. Mean resistivity value (MRV) of the bleeding region in EIT images was calculated and plotted over time. We found that impedance changes caused by the bleeding could be revealed by EIT images and MRV curves. MRV curve varied approximately linearly with the quantity of blood injected using regression analysis (R 2 = 0.90 to 0.99, p < 0.05). In total, 20 mL of blood volume changes could be identified by EIT. The progression of the retroperitoneal bleeding can be monitored by EIT in the proposed animal model. It suggests EIT is potential as a useful tool for continuous monitoring of retroperitoneal bleeding after blunt trauma.
Starting Page	2373
Ending Page	2379
Page Count	7
File Format	PDF
ISSN	00906964
Journal	Annals of Biomedical Engineering
Volume Number	37
Issue Number	11
e-ISSN	15739686
Language	English
Publisher	Springer US
Publisher Date	2009-08-26
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Continuous monitoring Electrical impedance tomography Retroperitoneal bleeding Blunt trauma Biochemistry Mechanics Biophysics and Biological Physics Biomedical Engineering Biomedicine general
Content Type	Text
Resource Type	Article
Subject	Biomedical Engineering

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