Journal of Vascular Surgery
Volume 49, Issue 5 , Pages 1117-1124 , May 2009

A modern theory of paraplegia in the treatment of aneurysms of the thoracoabdominal aorta: An analysis of technique specific observed/expected ratios for paralysis

  • Charles W. Acher, MD

      Affiliations

    • Corresponding Author InformationReprint requests: Charles W. Acher, MD, University of Wisconsin, University of Wisconsin Hospital, 600 Highland Ave, Room G4-317, Madison, WI 53792-7375
    • ,
  • Martha Wynn, MD

Received 11 September 2008 ,Accepted 30 October 2008.

  • Image Result

    A, Plot of O/E ratios for paraplegia in clinical reports by year shows a significant decline over the last 23 years. From the curve of this decline we divided our analysis into Eras: Era 1 from 1985 t

    A, Plot of O/E ratios for paraplegia in clinical reports by year shows a significant decline over the last 23 years. From the curve of this decline we divided our analysis into Eras: Era 1 from 1985 to 1997 and Era 2 from 1997 to 2008. B, Using our predictive model for paralysis risk we plotted observed vs estimated (EST) deficits. The regression plots for Era 1 and 2 showed a significant decline between Eras (P < .0001) and the model accounted for greater than 97% of the variability between reports for each regression line (r2 > 0.97).

  • Image Result
    Plot of mean O/E ratios for AC+SFD, XCL+SFD, and HA (HA and HA+SFD) shows no difference between techniques (P = .9942).

    Plot of mean O/E ratios for AC+SFD, XCL+SFD, and HA (HA and HA+SFD) shows no difference between techniques (P = .9942).

 Competition of interest: none.

PII: S0741-5214(08)02000-4

doi: 10.1016/j.jvs.2008.10.074

Journal of Vascular Surgery
Volume 49, Issue 5 , Pages 1117-1124 , May 2009

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