This reversal of a commonly used phrase is a plea. A plea against
the bias that leans doctors towards diagnosing and treating, even when the
scientific evidence may not support it. Sure, it is expected that a doctor will
diagnose and treat you, but sometimes there is no diagnosis or effective
treatment, and pursuing either may be harmful. When in doubt, your doctor will
continue to run tests until something comes up, and will continue to treat you
for as long as you return with symptoms. Sometimes, not pursuing a diagnosis and not
treating a patient are reasonable options. Sometimes they are the best option.
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Sunday, 27 January 2013
Friday, 18 January 2013
Book review: Limits to Medicine
Title: Limits to Medicine. Medical Nemesis: The Expropriation of Health (1975)
Author: Ivan Illich
Publisher: Marion Boyars
Ivan Illich was a philosopher and historian who published
several books in the 1970s targeting areas like medicine, transport, education
and energy use. His thesis was that modern, western, industrialisation and in
particular the institutionalization of specialised knowledge by the professions
has far-reaching negative consequences. His 1975 book Limits to Medicine. Medical Nemesis: The Expropriation of Health made his case against modern, institutionalised medicine. He felt that more
expensive and specialised medicine was more likely to be harmful and less effective, and that
important aspects of the life experience such as birth, mating, suffering,
aging and dying were being medicalized. His points were interesting and
controversial in their time, and the following 40-odd years of growth in specialised
industrial medicine has made many of them prescient.
Sunday, 6 January 2013
Lessons from history #5: Bone marrow transplant for breast cancer
In the 1990s, giving patients with breast cancer massive
doses of chemotherapy or radiotherapy followed by a bone marrow “rescue” was
thought to improve survival and even cure the disease. It was complex, expensive and risky, which only raised the perceived effectiveness. The
treatment spread, and insurance companies had to fall in line to cover the
treatment due to legal, government and public pressure. The randomised trials
that were eventually done showed that it was no more effective than standard treatment.
Here is the story and the lessons that can be learned.
Saturday, 5 January 2013
Evidence based medicine vs the Golden Rule
I am a big fan of evidence based medicine (EBM). Not the
cookbook type (“do it this way or else”), but the idea that medicine is a
science and therefore should be approached scientifically. We should use the
principles of logic and rational thinking to reduce the errors that result from
our often irrational, subjective “human” way of making decisions. Sometimes,
however, we try to use EBM to justify something that doesn’t need scientific
support – something that should be the default, and only changed if there is
evidence against it. Something like the Golden Rule.
Tuesday, 1 January 2013
What's the deal with those bad hip replacements?
Most people are aware
that a year or two ago there were some new hip replacements that were recalled.
The story behind it has all the ingredients to suit this blog: overestimation
of benefit, underestimation of harm, regulation failure, and conflict of
interest up the wazoo. The ‘deal’ as it were, was a bad one for patients, a bad
one for the company (in the end), but a great one for the surgeons, as it
became the gift that keeps giving.