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. 1994 Mar;76(2):132–135.

GORA: a scoring system for the quantification of risk of graft occlusion.

G P Copeland 1, P Edwards 1, A Wilcox 1, P N Wake 1, P L Harris 1
PMCID: PMC2502219  PMID: 8154808

Abstract

Auditing the outcome from vascular surgery with regard to graft occlusion is made difficult by variations in the type of surgery performed and the case mix. These difficulties are compounded when attempting to compare units. In the present study we have attempted to develop a scoring system to predict the risk of graft occlusion, and thus compensate for these variables. Prospectively collected data from 214 consecutive patients undergoing vascular reconstructive surgery (233 arterial grafts) were analysed. Graft occlusion occurred in 82 patients (35.2%). Using a multivariate linear regression analysis of these data a five-factor, five-grade scoring system has been devised (GORA: Graft Occlusive Risk Assessment). Logistic regression analysis of the observed risk of occlusion with this derived score produced the following relationship between the odds ratio of occlusive risk and GORA score: (logeR/1 - R = (0.229 x score) - 4.165). The score was then validated in a different group of 186 patients (196 arterial grafts). In both groups the score was found to predict accurately the risk of graft occlusion (P < 0.001). There was no significant difference in the receiver operating characteristic curves between the estimation and validation groups.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Budd J. S., Brennan J., Beard J. D., Warren H., Burton P. R., Bell P. R. Infrainguinal bypass surgery: factors determining late graft patency. Br J Surg. 1990 Dec;77(12):1382–1387. doi: 10.1002/bjs.1800771220. [DOI] [PubMed] [Google Scholar]
  2. Cooperman M., Pflug B., Martin E. W., Jr, Evans W. E. Cardiovascular risk factors in patients with peripheral vascular disease. Surgery. 1978 Oct;84(4):505–509. [PubMed] [Google Scholar]
  3. Copeland G. P., Jones D., Wilcox A., Harris P. L. Comparative vascular audit using the POSSUM scoring system. Ann R Coll Surg Engl. 1993 May;75(3):175–177. [PMC free article] [PubMed] [Google Scholar]
  4. Domaingue C. M., Davies M. J., Cronin K. D. Cardiovascular risk factors in patients for vascular surgery. Anaesth Intensive Care. 1982 Nov;10(4):324–327. doi: 10.1177/0310057X8201000405. [DOI] [PubMed] [Google Scholar]
  5. Goldman L., Caldera D. L., Nussbaum S. R., Southwick F. S., Krogstad D., Murray B., Burke D. S., O'Malley T. A., Goroll A. H., Caplan C. H. Multifactorial index of cardiac risk in noncardiac surgical procedures. N Engl J Med. 1977 Oct 20;297(16):845–850. doi: 10.1056/NEJM197710202971601. [DOI] [PubMed] [Google Scholar]
  6. Knaus W. A., Draper E. A., Wagner D. P., Zimmerman J. E. APACHE II: a severity of disease classification system. Crit Care Med. 1985 Oct;13(10):818–829. [PubMed] [Google Scholar]
  7. OVERALL J. E., WILLIAMS C. M. Models for medical diagnosis. Behav Sci. 1961 Apr;6:134–141. doi: 10.1002/bs.3830060205. [DOI] [PubMed] [Google Scholar]
  8. Rutherford R. B., Jones D. N., Bergentz S. E., Bergqvist D., Comerota A. J., Dardik H., Flinn W. H., Fry W. J., McIntyre K., Moore W. S. Factors affecting the patency of infrainguinal bypass. J Vasc Surg. 1988 Sep;8(3):236–246. [PubMed] [Google Scholar]

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