Hwang T G, Wilkins E G, Lowery J C, Gentile J
Section of Plastic Surgery at the University of Michigan, the Center for Practice Management and Outcomes Research at Ann Arbor VHA Health Services Research and Development Center of Excellence, 48109-0340, USA.
Plast Reconstr Surg. 2000 Feb;105(2):541-8. doi: 10.1097/00006534-200002000-00010.
Among strategies recently proposed to reduce practice variation, promote quality, and control costs in health care delivery, the concept of the clinical pathway has received considerable attention. Because transverse rectus abdominis musculocutaneous (TRAM) breast reconstruction is a common and often costly intervention, this institution sought to evaluate cost and quality outcomes of a clinical pathways program for this procedure. The TRAM reconstruction clinical pathway was implemented in April of 1996 to standardize postoperative care in this patient population. Outcomes of consecutive pathway cases for the first 14 months of the program were assessed in a retrospective cohort design, by using all nonpathway TRAM cases from the 18 months immediately before pathway implementation as controls. Outcomes assessed included length of hospital stay, postoperative complications, total postoperative charges, and total postoperative costs in relative value units. Data on these dependent variables were collected from hospital charts and billing records. The effects of pathway implementation on the outcomes of interest were analyzed by using analysis of covariance to control for potential confounding by other independent variables, including surgical site (unilateral versus bilateral reconstructions), technique (pedicle versus free TRAMs), timing (immediate versus delayed reconstructions), and patient age. Finally, a comparison of variances in the outcomes of interest between the two groups was analyzed by using an Ftest. For all statistical tests, p values of < or = 0.05 were considered significant. Twenty-nine patients were treated in the TRAM pathway group, whereas the control population included 40 nonpathway patients. After implementation of the TRAM pathway, length of stay decreased from 6.0 to 5.2 days; total postoperative charges were reduced from $8587 to $7744; and total postoperative relative value unit utilization declined from 1686 to 1104. Analysis of covariance showed that the decreases in length of hospital stay and relative value units in the TRAM pathway were statistically significant (p = 0.05 and p = 0.007, respectively). By contrast, no significant increase in complications was observed after pathway implementation. Variability in the TRAM pathway group, as measured by SD, decreased significantly for both length of hospital stay (p = 0.039) and relative value units (p = 0.023). Implementation of the TRAM reconstruction clinical pathway resulted in significant declines in length of hospital stay and total costs. These decreases in resource utilization had no significant effect on postoperative complication rates. Although additional research is needed to further assess the impact of clinical pathways, this approach offers considerable promise for improving the cost-effectiveness of health care.
