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Related Experiment Videos

Evaluation of right ventricular function during aortic operations

T J Vandermeer1, B S Maini, T H Hendershott

  • 1Department of Surgery, Saint Vincent Hospital, Worcester, MA 01604-4593.

Archives of Surgery (Chicago, Ill. : 1960)
|May 1, 1993
PubMed
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Right ventricular function is preserved during abdominal aortic aneurysm repair, as indicated by stable right ventricular ejection fraction (RVEF) despite hemodynamic changes. Mixed venous oxygen saturation (SvO2) provides insights into these circulatory adjustments.

Area of Science:

  • Cardiovascular Surgery
  • Anesthesiology
  • Critical Care Medicine

Background:

  • Abdominal aortic operations involve significant hemodynamic shifts.
  • Monitoring right ventricular function and oxygen saturation is crucial during these procedures.

Purpose of the Study:

  • To precisely define and correlate hemodynamic changes during abdominal aortic operations.
  • To assess the impact of aortic clamping and unclamping on right ventricular function and mixed venous oxygen saturation (SvO2).

Main Methods:

  • Simultaneous measurement of SvO2 and right ventricular ejection fraction (RVEF) using a pulmonary artery catheter.
  • Continuous monitoring in 25 patients undergoing infrarenal abdominal aortic aneurysm repair.

Main Results:

Related Experiment Videos

  • Aortic clamping led to decreased cardiac index, stroke volume index, and RVEDVI, with unchanged RVEF.
  • Aortic unclamping caused reduced SvO2, increased pulmonary artery pressure and resistance, but preserved RVEDVI and RVEF.

Conclusions:

  • Right ventricular function appears to be preserved during abdominal aortic aneurysm repair.
  • Simultaneous SvO2 and RVEF monitoring aids in understanding hemodynamic alterations during these surgeries.