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The relation between quantity and quality with coronary artery bypass graft (CABG) surgery
Insights
Higher patient volumes improve outcomes for coronary artery bypass graft (CABG) surgery. Centralizing CABG procedures in high-volume centers and for high-volume surgeons significantly reduces immediate death rates, enhancing patient safety.
Area of Science:
- Cardiovascular Surgery
- Health Services Research
- Surgical Outcomes
Background:
- Technical procedures, including coronary artery bypass graft (CABG) surgery, often exhibit improved quality with increased procedural volume.
- Immediate mortality rates for CABG surgery show significant variability, ranging from approximately 1% to over 15% across different providers.
- A well-established volume-outcome relationship exists in CABG surgery, where higher volumes correlate with lower mortality.
Purpose of the Study:
- To examine the impact of procedural volume on the quality and outcomes of coronary artery bypass graft (CABG) surgery.
- To evaluate the evidence supporting the centralization of CABG procedures based on volume effects.
- To assess the potential for regulatory interventions to improve CABG surgical outcomes.
Main Methods:
- Analysis of existing research, particularly from the United States, on the relationship between surgical volume and mortality for CABG procedures.
- Review of regulatory approaches to CABG provision in European countries, specifically The Netherlands and Sweden.
- Comparative assessment of outcomes in relation to volume thresholds for hospitals and individual surgeons.
Main Results:
- United States research clearly demonstrates a volume effect in CABG surgery, with higher-volume centers and surgeons exhibiting lower immediate mortality rates.
- This volume effect remains significant even at high procedural volumes, such as over 650 annual procedures for hospitals and 116 for physicians.
- Countries with centralized CABG facilities, like The Netherlands and Sweden, have implemented regulations that leverage this volume effect.
Conclusions:
- The strong evidence for a volume effect in CABG surgery supports the implementation of regulations to centralize CABG procedures.
- Centralization of CABG services in high-volume facilities and for high-volume surgeons has the potential to significantly improve patient outcomes and reduce mortality.
- Adoption of similar regulatory strategies in other European countries could lead to widespread improvements in CABG surgical quality and patient safety.
Abstract:
Many technical procedures may be done with better quality at higher volumes. In this paper, we examine the experience with coronary artery bypass graft (CABG) surgery. Immediate death rates (death during the hospital admission) with CABG vary widely, from lows of 1 percent or so to highs approaching 15 percent and perhaps higher. Research from the United States demonstrates clearly that there is a volume effect. Centres and surgeons with higher volumes have lower immediate mortality. The volume effect persists even at relatively high levels, that is, above 650 procedures a year for a hospital and above 116 procedures a year for a physician. This fact strongly supports regulation to centralize CABG facilities. In The Netherlands and Sweden, CABG is so regulated. No other European countries have strong regulation to centralize CABG provisions. Outcomes could be improved by such regulation.