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Ann Thorac Surg 2003;76:1585-1586
© 2003 The Society of Thoracic Surgeons

Original article: cardiovascular

Invited commentary

Julius M. Guccione, PhDa, Mark B. Ratcliffe, MDa

a Division of Surgical Services (112D), San Francisco Veterans Affairs Medical Center, 4150 Clement Street, San Francisco, CA 94121, USA

e-mail: mark.ratcliffe@med.va.gov

The first 20% of the full text of this article appears below.


   Introduction
 
This paper by Setser and colleagues is probably the most in-depth mechanical analysis of partial ventriculectomy (PLV) data to date, and the authors are to be congratulated for their effort.

Briefly, the authors performed tagged MRI in 24 patients before 3 and 12 months after partial ventriculectomy. Two-dimensional circumferential strain was measured from the short axis tagged images as described by Yeon et al [1] and global and regional circumferential stress were calculated using the force balance equations of Falsetti et al [2] and Janz [3], respectively. Finally, event history analysis using the Cox proportional hazards model was performed with time to PLV failure (death, listing for transplantation) as the dependent variable.

The following is a list of significant findings:

  1. There was significant regional heterogeneity in regional circumferential LV strain before PLV.
  2. Regional circumferential strain increased and regional circumferential stress . . . [Full Text of this Article]


Related Article

Noninvasive assessment of cardiac mechanics and clinical outcome after partial left ventriculectomy
Randolph M. Setser, Richard D. White, Bernhard Sturm, Patrick M. McCarthy, Randall C. Starling, James B. Young, Jane Kasper, Tiffany Buda, Nancy Obuchowski, and Michael L. Lieber
Ann. Thorac. Surg. 2003 76: 1576-1585. [Abstract] [Full Text] [PDF]





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