[quote=Dori Schatell;13987]Arghh!!! Now that I’ve finally found time (a broken ankle will slow you down enough to do that) to read the full-length article, I’m just as appalled as I feared I’d be. I took a medical ethics class in college taught by two national experts (one of whom I still run into periodically on airplanes), and just don’t believe that they would have come to the same conclusion based on the available evidence. So, let me object to this point by point:
• Likelihood of benefit - Let’s see, the number one cause of death on dialysis (as in the general public) is heart disease (generally left ventricular hypertrophy)–which is worsened by high blood pressure. The authors acknowledge that short daily HD (SHD) improves blood pressure and can help regress left ventricular mass. So, it directly impacts this vital problem. Yet, somehow, they managed to cite a positive article about SHD that reported AV fistula patency of 92% (#28, Woods JD et al) as claiming vascular access problems with SHD, an article from 1968 (#43–how relevant is that likely to be to today’s vascular access outcomes?), an article about benefits of nocturnal dialysis (#44), and two reports about home dialysis machines (#45, #46)–which are not even studies. Hmmm. If we can’t trust the references in one section to prove their point, how can we trust any of the others?
In this section, the authors state, “To date, the data on the net benefits of daily dialysis have only shown improved outcomes for some clinical endpoints like blood pressure control and quality of life, and these findings have only been in small clinical trials. There have not been any large-scale clinical trials attesting to the positive impact of daily dialysis on other clinical outcomes.” Um, yeah. So, they’ve found improvements in the clinical endpoints that point directly to morbidity and mortality, but without “large scale clinical trials.” I’d love to know where the “large scale clinical trials” of Kt/V urea as a measure of dialysis dose are, since so much of the “evidence-based medicine” in dialysis rests on this premise. And, as Bill so aptly pointed out, where are the large-scale clinical trials proving the benefit of conventional hemodialysis?. Oh yeah. There aren’t any.
Urgency of Need - How the authors can claim in one paragraph that the high mortality rate of U.S. dialysis patients (~21%/year) creates an urgency to do something–but then say in the next there isn’t “sufficient evidence yet to conclude that the ethical criterion of urgency of need argues for funding of daily dialysis,” frankly boggles the mind. Each year, more than 24 times as many Americans die on dialysis as were killed in the 911 attack in New York. We spent billions after 911 to support the families who had losses. What are people on dialysis worth? What constitutes “sufficent” evidence?
Change in Quality of Life - Yay–the authors believe this criterion is met. I wonder if they are aware that physical and mental functioning (aspects of health related quality of life measured by standard tools) predict morbidity and mortality?. So, heading back to the “Likelihood of Benefit” category, I would say that they need to revise that criterion to met as well.
Duration of Benefit - Interestingly, the authors fail to cite the (admittedly small) studies that have demonstrated survival benefits of SHD over CHD. Perhaps they weren’t aware of them? I believe that they are incorrect that this criterion has not been met.
Interestingly, under Patient Selection, the authors seem to think that because every patient is not a candidate for SHD, that no-one should have it funded. Good thing this wasn’t the decision for PD or transplant! And fascinating that CHD–with its documented poor outcomes–seems to be an acceptable “default” modality that anyone can do. (At least for a while…)
Frankly, I get the sense that the authors had some reason for wanting to maintain the status quo, though I can’t imagine what that would be.[/quote]
Give 'em hell,Dori!