Devices used to expose the posterior coronary artery in OPCABG surgery may cause ischemia

R. Dzwonczyk, C. L. Del Rio, B. Sun, Robert E. Michler, M. B. Howie

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Off-pump coronary artery bypass graft (OPCABG) surgery is commonly used to revascularize diseased hearts. In order to graft a posterior artery in this procedure, the heart must be lifted from the chest cavity using an apical suction device to expose the surgical field. In the process, this device may cause unwanted myocardial ischemia. We measured myocardial electrical impedance (MEI), a parameter that responses to myocardial ischemia, as well as ST-segment changes during OPCABG surgery in five patients undergoing revascularization of the left anterior descending (LAD) and posterior descending coronary artery (PDA). MEI increased with the application of the suction device in these patients, suggesting myocardial ischemia. ST-segment changes were negligible while the heart was raised from the chest cavity but increased immediately when the heart was returned to the normal position. Our data suggest that the apical suction device causes ischemia that is virtually undetected with ST-segment monitoring while the heart is raised and electrically disconnected from the body. MEI has the potential to detect intra-operative ischemia monitor.

Original languageEnglish (US)
Title of host publicationBioengineering, Proceedings of the Northeast Conference
Pages148-149
Number of pages2
StatePublished - 2005
Externally publishedYes
EventProceedings of the 2005 IEEE 31st Annual Northeast Bioengineering Conference - Hoboken, NJ, United States
Duration: Apr 2 2005Apr 3 2005

Other

OtherProceedings of the 2005 IEEE 31st Annual Northeast Bioengineering Conference
CountryUnited States
CityHoboken, NJ
Period4/2/054/3/05

Fingerprint

Grafts
Surgery
Pumps
Acoustic impedance
Monitoring

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Dzwonczyk, R., Del Rio, C. L., Sun, B., Michler, R. E., & Howie, M. B. (2005). Devices used to expose the posterior coronary artery in OPCABG surgery may cause ischemia. In Bioengineering, Proceedings of the Northeast Conference (pp. 148-149). [8.1.2]

Devices used to expose the posterior coronary artery in OPCABG surgery may cause ischemia. / Dzwonczyk, R.; Del Rio, C. L.; Sun, B.; Michler, Robert E.; Howie, M. B.

Bioengineering, Proceedings of the Northeast Conference. 2005. p. 148-149 8.1.2.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Dzwonczyk, R, Del Rio, CL, Sun, B, Michler, RE & Howie, MB 2005, Devices used to expose the posterior coronary artery in OPCABG surgery may cause ischemia. in Bioengineering, Proceedings of the Northeast Conference., 8.1.2, pp. 148-149, Proceedings of the 2005 IEEE 31st Annual Northeast Bioengineering Conference, Hoboken, NJ, United States, 4/2/05.
Dzwonczyk R, Del Rio CL, Sun B, Michler RE, Howie MB. Devices used to expose the posterior coronary artery in OPCABG surgery may cause ischemia. In Bioengineering, Proceedings of the Northeast Conference. 2005. p. 148-149. 8.1.2
Dzwonczyk, R. ; Del Rio, C. L. ; Sun, B. ; Michler, Robert E. ; Howie, M. B. / Devices used to expose the posterior coronary artery in OPCABG surgery may cause ischemia. Bioengineering, Proceedings of the Northeast Conference. 2005. pp. 148-149
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