Reducing Interruptions – And Improving Patient Safety

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by Dan Markovitz

Long-time readers of this blog (and my own) know that I focus on bringing lean techniques to individual work habits. One topic I often cover is how interruptions — from email, phone calls, colleagues — creates inefficiency and waste for office workers. I suspect that readers sometimes think that this is a pretty minor issue — that “real lean” addresses more significant things, like defective parts coming out of a grinding shop.

Now comes a report from the University of California at San Francisco that interruptions aren't just minor annoyances that make people a little less efficient. They cost money and lives.

A study involving nine San Francisco Bay Area hospitals focused on improving accuracy in administering drugs – with particular emphasis on reducing interruptions that often lead to mistakes – resulted in a nearly 88 percent drop in errors over 36 months at those hospitals.

“Medication errors make up the largest slice of the medical error pie,” said Julie Kliger, director of UCSF's Integrated Nurse Leadership Program, which developed the medication errors program. “Improving these numbers is a huge benefit to patient safety and, secondarily, it reduces costs.”

Lest you think this is just a minor issue, the Institute of Medicine estimates that errors in administering medication cause about 400,000 preventable injuries in hospitals and about $3.5 billion in extra medical costs each year.

What's most exciting about the study is the way they reduced those errors. In true lean fashion, front line workers — nurses — figured out ways to improve the current state without spending money. No fancy jargon, no value stream maps — just common sense and a desire to fix a problem.

Striving to reduce interruptions that lead to mistakes, teams of nurses at the different hospitals came up with a variety of methods – often surprisingly low tech – to alert others they were administering medications. The strategies included everything from wearing brightly colored vests or sashes to establishing “quiet zones” or making announcements at key points in the day when medications are being administered.

At San Francisco General, for example, nurses found they were constantly being interrupted in the medication room because their colleagues could see them through the windows. So they covered the windows.

The solutions “have to be low tech because we, as staff nurses, don't have the money or ability to make high-tech changes,” said Celeste Arbis, a registered nurse in the medical-surgical unit there. “Something as simple as changing the process just a little bit can make a big difference.”


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Dan Markovitz
Dan Markovitz is president of Markovitz Consulting, a firm that radically improves operational speed and efficiency by applying lean concepts to knowledge work. He is a faculty member at the Lean Enterprise Institute and teaches at the Stanford University Continuing Studies Program. He also lectures on A3 thinking at the Ohio State University’s Fisher School of Business. Dan is a frequent speaker and presenter at conferences, and has consulted to organizations as diverse as Camelbak, Clif Bar, Abbott Vascular, WL Gore & Associates, Intel, the City of Menlo Park, and Memorial Sloan-Kettering Cancer Center. His book, A Factory of One, was honored with a Shingo Research Award in 2013. Dan has also published articles in the Harvard Business Review blog, Quality Progress, Industry Week magazine, Reliable Plant magazine, and Management Services Journal, among other magazines. All of these articles are available for download on the Resources page. Earlier in his career, he held management positions in product marketing at Sierra Designs, Adidas, CNET and Asics Tiger, where he worked in sales, product marketing, and product development. He also has experience as an entrepreneur, having founded his own skateboarding footwear company. Dan lived in Japan for four years and is fluent in Japanese. He holds a BA from Wesleyan University and an MBA from the Stanford University Graduate School of Business.

3 COMMENTS

  1. While staff engagement and input is a good thing, of course, I have to ask a question about that last case in Hayward…

    Each unit decided to have a different visual. Is this confusing to physicians, pharmacists, or others who work in different units? There's got to be a balance between "we want it our way" versus what's good for the system altogether.

    For example, some cities have standardized the color of patient wristbands so that "Do Not Resuscitate" is the same color in every hospital — you don't want a mistake being made by a physician who works at two different hospitals in that case!!

    Maybe the "do not interrupt" visual isn't as risky, having variation. But if I were coaching the team, I'd try to get them to come to a standard consensus approach that would be more consistent. That's my thinking anyway. What do the others think?

    Is all of this (including covering windows up) getting to the root cause (why do you need to interrupt me?) or is this all a bit of a
    "workaround" I wonder?

  2. Get points on the effect of interruptions. In one of our factories we stopped interuptions to warehouse where materials were stored by creating a pitch route for pick-up and delivery. This action increased inventory accuracy 10% (observed from cycle counts) and reduced shipping errors by 50%. Simple, stop the interruptions and people could focus on their job thus reducing mistakes.

  3. Mark: valid point about the value of standardization. However, since the layout of each floor and each hospital differs, and the nature of the nurses' jobs differs, I wonder if it's possible to standardize that stuff. Probably best to withhold judgment until you go to the gemba!

    Regarding the root cause of interruptions, my research shows a host of factors:
    – psychological (need to feel connected)
    – ignorance (don't understand the cost)
    – lack of service level agreements (we've trained people to expect instant response, even when it's not necessary)

    Tim's story points out something very important — that the deleterious effects of interruptions aren't just on the hospital ward. They're on the shop floor, the warehouse, and (as I often argue) in your office or cubicle.

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