Advertisement
Centralization would likely bring better outcomes, experts say, but may not be feasible
Concentrating care across the spectrum of cardiothoracic surgery to regional high-volume specialty centers would likely improve patient survival and promote more efficient use of resources. However, such a change might exacerbate accessibility issues and would face many obstacles in the U.S., including regulatory constraints, potential antitrust actions and difficulties balancing financial incentives.
Advertisement
Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. Policy
Those are the conclusions of a group of national cardiothoracic surgery thought leaders in an invited expert opinion on the pros and cons of regionalization just published in the Journal of Thoracic and Cardiovascular Surgery.
“There are no easy answers to the complex questions of whether and how cardiothoracic surgery should be regionalized to specialty centers in the U.S.,” says lead author of the opinion paper, Tara Karamlou, MD, MSC, a pediatric and congenital heart surgeon in Cleveland Clinic’s Department of Thoracic and Cardiovascular Surgery. “Considerable evidence supports centralization to save lives and costs, but implementation is improbable for financial and social reasons.”
Existing centralized services, such as for organ transplantation and transcatheter valve replacement, demonstrate that such a model makes sense for complex interventions.
Real-world studies, as well as theoretical models, indicate that patients treated at high-quality centers with larger volumes fare better. The opinion piece highlighted a recent analysis of nearly 9,000 patients with type A aortic dissection from the Centers for Medicare and Medicaid Services (CMS) database. Those treated at (or transferred to) a facility that performed at least 105 proximal aortic operations had a relative risk reduction for operative survival of 8.1% compared with patients treated at a lower-volume center.
In another example, when Sweden consolidated congenital heart surgery from four hospitals to the two best-performing facilities, 30-day mortality rates fell from 9.5% to 1.9%.
Advertisement
But Dr. Karamlou cautions that advocating for regionalization based on volumes alone is overly simplistic. “Increasing numbers must be accompanied by a commitment to continued innovation, high quality and patient safety within the institutions,” she comments. “Collaboration and communication between specialty centers and local hospitals must also be emphasized.”
The article brings up several obstacles to regionalization in the U.S., including the following:
Advertisement
Dr. Karamlou and colleagues emphasize that while evaluating the benefits of regionalization requires good data, acquiring comparable outcomes data is particularly challenging in a specialty as complex as cardiothoracic surgery — a problem magnified in congenital cardiothoracic surgery. They note, for example, that the number of patients needed to adequately power studies of different congenital anomaly repairs is often impossibly high for single institutions to acquire. Risk adjustment is also an important concern when comparing smaller hospitals that likely have less-complex cases than larger institutions.
Another area where data are lacking involves the logistics of consolidation. Whether entire hospitals — as opposed to, say, personnel or selected resources — should be regionalized is an important issue that requires further study. Simulations that have been performed by Dr. Karamlou’s group could be harnessed to address these pragmatic issues.
The authors offer alternatives to regionalization that may prove more practical in the U.S. Examples include:
Advertisement
“The notion of ‘access versus excess’ is a continuing challenge as we seek to improve outcomes and increase resource efficiencies,” concludes Dr. Karamlou. “While full regionalization is probably impractical, thoughtful reorganization of some subspecialties and specific services may be our best strategy.”
“A decade ago, Dr. Karamlou and colleagues assessed outcomes of neonates admitted to hospitals across North America in inception studies of several rare congenital heart defects,” says Eugene Blackstone, MD, Head of Clinical Investigations in Cleveland Clinic’s Miller Family Heart, Vascular & Thoracic Institute. Among their findings (J Thorac Cardiovasc Surg. 2010;139:569-577), he notes, was that a volume-outcome relationship was far weaker than many other factors associated with outcomes, outcomes were highly variable across institutions, and the rank order of institutions with respect to outcomes varied according to specific defects being treated.
“Volume-outcomes relationships become meaningful, as does risk adjustment, when there are large numbers of cases — and specifically a large number of events, the effective sample size,” continues Dr. Blackstone. “Today, mortality is low even for quite complex defects, and variability across program sizes is considerably lower than it was a decade or more ago. This suggests that arguments for or against regionalization need to be based on metrics other than case volume and mortality. This new expert opinion from Dr. Karamlou and colleagues articulates several of these alternatives under both the pro and con arguments that need to be debated — or, better yet, implemented and assessed.”
Advertisement
The entire expert opinion is available here.
Advertisement
How our first century has impacted cardiovascular practice
Review offers comprehensive assessment of the landscape for wearables and more
Preserving trust in research requires vigilance and consensus around statistical nuances
Cardiac surgeon Patrick Vargo, MD, reflects on his first year as Cleveland Clinic staff
Improved risk prediction for patients is at the heart of Dr. Aaron Weiss’ research interests
Dr. Daniel Burns on mentorship, robotic valve surgery, statistics and more
JACC review makes the case and outlines how to ensure oversight
Editorial lays out best practices from three Cleveland Clinic surgeons