Medical Myths (lecture notes for North York Emergency Medicine Update)

Medical myths matter. All of our decisions, although they often seem small to us in the middle of a busy shift, have real impacts on people’s lives.

The primary myth that we discussed today was the harms of topical anaesthetics in the management of simple corneal abrasions. The full list of articles and resources can be found here.

If you are interested, a few of the other medical myths that I mentioned during the talk were:

I also mentioned a few every day medical myths, such as the need to drink 8 glasses of water a day, the idea that we only use 10% of our brains, or the thought that eating turkey might make you sleepy. For a short, fun read on some of these topics, see:

Vreeman RC, Carroll AE. Medical myths. BMJ (Clinical research ed.). 335(7633):1288-9. 2007. PMID: 18156231 [free full text]

As the dean of Harvard medical school, Charles Sidney Burwell famously said, “Half of what we are going to teach you is wrong, and half of it is right. Our problem is that we don’t know which half is which.” This may still be true, but I don’t think this has to be true. If we taught the complexity of science, rather than just a collection of facts, we wouldn’t be wrong. We would understand the need for replication of studies and the limitations of P values. We would be able to differentiate treatments with great evidence (ASA in MI) from those with bad evidence (tamsulosin for renal colic), and we wouldn’t be so surprised by the constant updates that are part of the normal scientific process.

There is a lot of evidence to keep track of, and not many of us are laden with free time. How is one supposed to keep up with everything? In this day and age, I think the answer is crowd-sourcing the work. There are so many great, free EBM resources, I don’t think there is any excuse in falling behind. This is a blog post on my favourite sources of evidence based medicine and critical appraisal.

If anyone takes up my challenge and finds an interesting answer while exploring why we do what we do, feel free to contact me and we can share it here with everyone else. You can use this contact page, or else e-mail me at first10em at gmail dot com.

First10EM in dogma there is no art.png

Author: Justin Morgenstern

Community emerg doc, FOAM enthusiast, evidence junkie “One special advantage of the skeptical attitude of mind is that a man is never vexed to find that after all he has been in the wrong.” - William Osler

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