One of the amazing perquisites of being a doctor is the opportunity to talk to a wide diversity of individuals with fascinating backgrounds and interests. I’ve always had some appreciation of this during my office interactions, but with age and ripening, I have come to relish and savor these conversations.
The skeptical cardiologist learns something from virtually every patient visit. On a recent office day, I received patient pearls on topics ranging from Viking River cruises in Germany, to the method by which Express Scripts squeezes money from Walgreens and drug manufacturers, to certain novels of T. Coraghessan Boyle not centered on the maniacal vegetarian John Harvey Kellogg.
Not uncommonly, I’ll learn something about medicine or cardiology if I listen closely to my patients and keep an open mind.
I saw a 69 year old woman (we’ll call her Donna) the other day who had advanced plaque in her coronary arteries and with whom I had initiated a discussion on the pros and cons of taking a statin drug to lower her risk of heart attack and stroke. This was not the first time we had talked about this topic; in previous visits she had shared with me her great fear of statin side effects and her desire to modify risk by dietary modification. On this visit, she came prepared with more research she had done on statins, and told me she was concerned about an increased risk of diabetes with statin drugs.
I gave her my standard spiel: statins, especially more potent ones like rosuvastatin and atorvastatin, appear to increase the risk of diabetes by 10-20%, however, this is offset by the benefits of statins, especially in someone with significant atherosclerosis, in reducing heart attack and stroke.
Donna then told me that she had read that pravastatin lowers the risk of diabetes. I hadn’t heard this (or more likely this slipped out of my ever-shrinking cerebral database) previously. Ten years ago, in the era before routine use of electronic health records (EHR), I would have had to just admit my ignorance and promise to look into that claim later (something that would not consistently happen due to time constraints and forgetfulness). However, now I enter the patient exam room with my MacBook Air, primarily to access the patient’s EHR and look at old notes, cardiac tests etc.
Increasingly I also use the Mac to quickly look up information about a topic the patient has brought to my attention – either double checking what I believe to be true or researching claims I am unfamiliar with.
Often, the topic raised is the “snake oil du jour” (for example, is turmeric a cardiovascular panacea?), but in this case and many others, it is a relevant question about the nuances of disease or my proposed treatment.
A quick search (20 seconds) pulled up a 2009 meta-analysis of randomized trials of statins and the risk of diabetes. Sure enough, one of these trials (the West of Scotland Coronary Prevention Study) actually showed that patients treated with 40 mg of pravastatin had a 30% lower risk of developing diabetes. Four studies showed no effect of statins on risk of developing diabetes and only one, the JUPITER trial utilizing rosuvastatin (Crestor), showed a slight increase.
For some patients like Donna, a higher risk of diabetes may be a deal breaker for taking a life-saving medication. Although I can confidently tell her that the benefits outweigh the risks, if she has a specific fear of diabetes, perhaps related to a family member who had horrific complications of the disease, she could easily decline to take statins.
In Donna’s case, this new information about pravastatin, confirmed by the wonders of Google and a fast WiFi connection led to her giving statins (in the form of pravastatin) a chance.
I’ll remember this patient-triggered drop of wisdom for future discussions with patients whose grave fear of diabetes makes them balk at taking statins.
west of scotland
The skeptical cardiologist has previously agreed with widespread dietary guideline recommendations that encourage most adults to consume a variety of fish, preferably oily types (eg,