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A [colored] picture tells a thousand words.

June 25, 2014

In another entry for the communication category, here’s a little play I wrote:

Scene: pre-op area, Anyhospital USA.  Patient arrives for surgery exactly at the scheduled start time, that is, an hour and half late.

Anesthesiologist (me): “Good morning Mrs. Jones.  I’m Dr. so-and-so.  How are you this morning?”

Patient: “Oh, doctor, I have the most terrible headache.  They told me my surgery was at 11 so here I am at 11, and now they tell me I’m late.”

Me:  “It’s OK, Mrs. Jones.  It’s a common mistake.  Now, did you have anything to eat this morning?”

Patient: “Oh, no, doctor.  Just a little toast and coffee.”

Pause, as the anesthesiologist takes in this little statement

Me: “I see you have some arthritis.  Do you take anything for pain?”

Patient: “Oh no, doctor.  I don’t like to take pills.  Just a little Motrin and aspirin.”

Me: (bracing for impact) “How much aspirin?”

Patient: “Not more than three or four a day.  As I said, I don’t like to take pills.”

This is an all-too-common scenario.  Pre-operative instructions for patients almost always include scheduled surgery time, when and where to arrive, instructions not to eat before surgery, and to stop taking any blood thinners, including aspirin.  And yet people show up late having had bacon and eggs, practically swimming in dysfunctional platelets.  I did it myself.  With my cat.  And I of all people should know better.  I took her in for her little kitty-hysterectomy and the receptionist asked me if I had taken her food away the night before.  “Uhhhh…”

Hospitals have various ways to impart pre-operative instructions.  Some have everyone come in the week before to the pre-anesthesia clinic.  Some use nurses making phone calls.  Some give written instructions.  These things have only middling success.  A recent study in Anesthesiology suggests that as many as 40% of patients forget some portion of their pre-operative instructions (http://journals.lww.com/anesthesiology/Fulltext/2014/07000/Predictors_of_Patient_Medication_Compliance_on_the.13.aspx).  Some anesthesiologists at the University of Alabama decided to study whether a simple intervention could lower this percentage.  They created a one-page, illustrated, color-coded instruction sheet.  So in the case of the fictional patient above, she would have received a sheet that had “Don’t eat breakfast” in big letters, with a picture of bacon and eggs with a line through it, the whole thing with a background of red.  Her blood pressure medications would be illustrated with a picture of a pill and a blood pressure cuff, highlighted in green.  I’m not sure how you would indicate that aspirin is a no-no, but you get the idea.  It sounds simplistic and even a little infantile, but the folks in Alabama got a 14% bump in patient compliance pre-operatively.  Why?

Well, for one thing, we sometimes assume people can read when they can’t.  Health care professionals can easily forget that, and an illiterate patient may not want to tell you.  Beware of the “Nod and Smile” patients.  Secondly,  patients don’t read what they’re given, or they posse the piece of paper, or their kid throws up on it.  A third reason is that people are less likely to remember what to do when they don’t know the reason for the instructions.  Many people don’t know that the reason to stop taking aspirin before surgery has to do with blood clotting properly. Lastly, no one remembers things when you just tell them.  Just ask my poor cat.

Maybe the biggest reason the University of Alabama folks might have seen the results they did is that humans are very visual and habitual.  Anesthesiologists know this very well.  There’s a reason why anesthetic drugs are packaged with colored tops.  When one of us reaches for a drug one of the cues that tells us we have the right one, besides reading the label, is habituation to the colors and shapes.  Red tops mean paralytics, purple is saline, a small vial in orange is for benzos, etc.  Medical errors in routine cases occur when either the color has changed or even, sometimes, the shape of the vial.  In real life the same thing occurs.  Red, yellow, and green are powerful indicators of action,   The shape of a stop sign indicates “stop”, even if you can’t read the word.  Signs in blue on the freeway mean a hospital is nearby.  In the UK a white circle with a red line through it means subway.  We take in these kinds of visual cues all the time.  They are immediate and unmistakable forms of communication.  Bravo, University of Alabama.  Simple solutions are sometimes the best solutions.

Of course, people will still lose the color-coded paper.

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