Changes in left ventricular wall motion after coronary artery bypass surgery: signal or noise?

Circulation
G M JeppsonS C Klausner

Abstract

We evaluated changes in ventricular wall motion after surgery by comparing smoothed, filtered measurements of regional percent shortening (RPS) from right anterior oblique ventriculograms in 37 patients before and after surgery. After surgery there was a significant (p less than 0.05) decrease in the number of regions with hypokinetic wall motion. The distribution of RPS values was also different (p less than 0.005). However, the mean value of RPS for the surgery group as a whole was not significantly altered. These data were contrasted with RPS data from 11 control patients, who were each studied twice but did not have surgical intervention. Similar analysis of the control group did not show any significant change between studies in the number of hypokinetic regions, and the distributions of RPS for the first and second angiograms were not different. We found a 10.3% absolute mean change in repeated measurements of RPS in the control group. We conclude that significant changes occurred after surgery that were not evident in the control group, and the amount of variability in repeated measurements of RPS suggests that analysis should be applied to group rather than individual data.

References

Mar 1, 1978·Circulation·H D McIntosh, J A Garcia
Aug 1, 1978·The American Journal of Cardiology·J W HurstJ M Bradford
Jun 1, 1978·The American Journal of Cardiology·A A BoveJ F Spann
Jan 1, 1967·Circulation·D G GreeneI L Bunnell
Aug 1, 1974·Computers and Biomedical Research, an International Journal·L D HarrisH R Warner
Jul 1, 1974·The American Journal of Cardiology·J H McAnultyS H Rahimtoola
Apr 1, 1969·The American Journal of Cardiology·M V Herman, R Gorlin
Jul 1, 1966·The American Journal of Cardiology·J C Davila, M E Sanmarco
Feb 1, 1980·The American Journal of Cardiology·L J MintzE L Alderman
Sep 27, 1974·Science·A Tversky, D Kahneman

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Citations

Nov 1, 1994·Clinical Cardiology·H D MovsowitzS Yazdanfar
Oct 1, 1991·Cardiovascular Drugs and Therapy·R BolliR S Rabinovitz
Jan 1, 1987·American Heart Journal·A S IskandrianE Mostel
May 1, 1996·Social Science & Medicine·V Brezinka, F Kittel
Jan 1, 1994·Journal of the American College of Cardiology·F K WeltyS J Shubrooks
Jun 1, 1996·Journal of the American College of Cardiology·E R SchwarzP Hanrath
Jan 22, 1998·The Annals of Thoracic Surgery·M SalatiC Santoli
Jan 20, 2010·BMC Cardiovascular Disorders·Martin UganderHåkan Arheden
Feb 1, 1988·American Heart Journal·R B HimelmanN B Schiller
May 1, 1983·Pacing and Clinical Electrophysiology : PACE·R L CoskeyT Zicari
Apr 1, 1983·Journal of Medical Systems·T A PryorH R Warner

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