Wednesday, September 1, 2010

Putting Dr. Zamboni on Ice

So . . . a doctor named Paolo Zamboni has been trying for some time to get people to think differently about multiple sclerosis. MS has been long perceived to be an auto-immune disorder that causes degeneration of the nerve endings, which in turn causes a wide variety of symptoms, and eventually physical and mental disability. Dr. Zamboni wants to begin trials in Canada, lots of MS patients want to undergo the surgery, but the Canadian government has decided not to fund the trials.

Ok, that was kind of dry and probably not what you have come to expect from my blog entries. But it does relate - because it may come down the same type of errors in thinking that I'm so fond of writing about. I hedge my claim because I am not a medical doctor, and cannot assess the merit of the medical claims of Dr. Zamboni; I can only speak to the decision-making biases that surround his ideas.

Essentially what is going is that someone is trying to help people with MS, and the way in which he is trying to do it is different the accepted conceptualization of the disease. Dr. Zamboni is claiming that MS is caused by iron build-up in the brain due to vein blockages, and therefore treatable with angioplasty (surgery in which veins are opened up). Data regarding this new procedure is mixed but apparently there is evidence that it can work.

This all reminds me of the story of Heliobacter Pylori. Once upon a time, doctors all knew that peptic ulcers were caused by stress, diet, or blood type. Two Australian doctors, Barry Marshall and Robin Warren, came up with a crazy idea - ulcers were caused by bacteria. All the other doctors laughed at them; silly people thinking bacteria could cause ulcers. To prove them wrong, Barry Marshall drank a beaker full of H. Pylori bacteria (sort of like Sam Beckett proving that his theories of time travel were correct on Quantum Leap). Lo and behold, Marshall developed ulcers, that he then treated with antibiotics. Despite this (and other) proof, the medical establishment took a long time to accept this new idea regarding ulcers. And then they did, and everyone lived happily ever after, especially Drs. Marshall and Warren, who won Nobel Prizes.

Is Dr. Zamboni the next Marshall and Warren? I don't know, and the point is that no one does (he does share one similarity - while he didn't do the procedure on himself, he did do it on his wife, to apparent success). He has a method that has worked. There is risk involved (as with any procedure), but as long as the people willing to undergo the trials are aware of the risks, they should be allowed to volunteer themselves. The sense around the government's decision is that it was driven less by budget and more by dogma - MS is an autoimmune disorder, so why look for other causes? Prominent doctors are applauding the no-fund decision.

(I also think that if Dr. Zamboni had a different name, people might be more accepting of his ideas, especially in our hockey-mad country. Unfortunate but probably true)

The point is that it can be difficult to accept new ways of looking at old problems. Evolutionarily, this makes sense; the existing system works ok, and new ideas can be dangerous, so let's be biased against new ideas. The problem with this is that a few new ideas are improvements, and impediments to the acceptance are harmful in the long-term. The costs here are not huge, and no one is being coerced into anything. Just pony up the dough and lets see if we can help people.

3 comments:

  1. Very good point. Not so long ago we also believed the world was flat.

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  2. Good point, but unfortunately there's a lot more to this particular case. This isn't a question of him drinking a beaker of h.pylori, it's a situation where a whole lot of very vulnerable people who are desperate to be rid of a devastating illness would be offered a 'glimmer of hope' in the guise of a dangerous procedure that hasn't been proven to work. There are definite downsides, and while I'm not a 'prominent' doctor, I too applaud the 'no-fund decision' -- at least for now, until this procedure is proven to work.

    I totally understand what you're talking about, and I agree that often the medical community (and other professional communities) don't do people any favours by sticking to old dogmas. However, in medicine we're faced with life and death (and litigation, but that's another topic), and when it comes down to it the best way for now is the safest, proven, way. when all evidence points in one direction (autoimmune) and only mixed evidence points to the fact that this procedure may work, that's not good enough for us to send people under the knife. And while I agree that the patients are adults who will know the risks and 'consent', it's not good enough when a lot of them are willing to try just about ANYTHING that has even a chance of helping them. Like cancer patients who ingest shark cartilage.

    The earth is round, and I'm happy that this has been proven. And I will be happy to promote any new procedure that's proven too.

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  3. How can a procedure ever be 'proven' without trials similar to the one that was proposed, and rejected? Further research may add additional weight, it won't 'prove' it.

    And don't assume you are a better judge than you actually are, just because you are a medical practitioner. You may be surprised at the reasoning capacity of the average 'scared and ignorant, cartilage-ingesting' patients you patronize. Should I ever be in their unfortunate position, I would rather have a decision-making panel comprised of them, than 'experts'.

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