By Kristina Fiore, Staff Writer, MedPage Today
Published: May 08, 2012
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WASHINGTON -- Researchers attending this year's National Kidney Foundation clinical sessions will get a glimpse of early data on whether a new method of reimbursement for intravenous dialysis medications is having an impact on care.
An analysis of data from the Dialysis Outcomes and Practice Patterns Study (DOPPS) will look at whether there have been any changes in specific labs -- including anemia, phosphorus, and parathyroid hormone -- since the Centers for Medicare and Medicaid Services (CMS) began 'bundling' payments, according to Linda Fried, MD, chair of the program committee.
"It's too early to see an impact on hospitalizations," Fried told MedPage Today, "but we can see whether there's been a shift in lab values over the last year."
Bundling went into effect in January 2011; it establishes a single payment rate for dialysis and all medications given intravenously during dialysis, such as erythropoiesis-stimulating agents (ESAs), iron, and vitamin D.
Nephrologists were initially concerned that the policy would limit treatment options, especially for black patients with end-stage renal disease (ESRD), who tend to require higher doses of ESAs.
Starting in January 2014, oral medications given for ESRD-related complications, including phosphate binders, oral iron, and oral vitamin D, are going to end up in the bundle as well.
"If you get one payment no matter how much drug you use, the expectation is that there are going to be economic forces that will tend to push the use down," Fried said. "That might not be a bad thing, or it might impact care."
Another topic on the agenda will be controversial draft criteria from the United Network for Organ Sharing (UNOS) that sought to overhaul the way donor kidneys are allocated. The debate will be led by two researchers heavily involved in the controversy -- Kenneth Andreoni, MD, of Ohio State University, who was on the UNOS guideline committee, and Lainie Friedman Ross, MD, PhD, of the University of Chicago, a major critic.
The new recommendation suggests giving the highest-quality kidneys to the 20% of recipients with the longest estimated survival time, with the rest would be matched by the ages of the donor and recipient. Critics have charged that the new criteria give more kidneys to younger patients, discriminating against older ones.
"If you shift [the system] to take into account life expectancy, you end up shifting organs to younger people, and that caused controversy," Fried said.
She added that the guideline, which was released in February 2011, is currently being rethought as the committee tries to balance all the concerns. No date is set for release of a revamped guideline.
The meeting will also feature a special session that looks at the management of diabetes patients with ESRD.
There's been much talk about personalized treatment in type 2 diabetes, most recently with European and American organizations urging a less algorithmic approach.
"If you have a patient with advanced kidney disease, perhaps we should back off [HbA1c] targets to avoid the hypoglycemia risk," said Fried, especially since diabetics with kidney disease are more likely to get low blood sugar.
Researchers are also questioning whether this population should rely on a completely different measurement -- glycated albumin -- for assessing care instead of HbA1c.
A study reported last year by Barry Friedman, MD, of Wake Forest University, and colleagues, found that glycated albumin was a better predictor of hospitalization and mortality in diabetes patients with ESRD than HbA1c or serum blood sugar.
"HbA1c is much more stable in a non-kidney disease patient, so it may not be the best marker," Fried said.
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