WEDNESDAY, OCTOBER 18, 2017
Font Size
Implementation Case Studies Case Study: Using np Charts To Address On-Time Medication Delivery

Case Study: Using np Charts To Address On-Time Medication Delivery

Hy Sedrate, director of quality for St. Recover in the Longrun Hospital, has been worried about his organization’s future, and more specifically about his own future. St. Recover has been acquired, through a series of complex arrangements, by Santa Cura Hospitals, a large regional organization made up of some two dozen hospitals and clinics. Sedrate has learned to manage quality systems at St. Recover, but only through the prowess of his SPC team, which works nonstop to analyze data in the hospital.

Sedrate knows that he will not be promoted to the larger organization without a dramatic demonstration of quality improvement in his organization. And the alternative is grim, since there are apparently plenty of other quality directors in the same position within the Santa Cura system.

After walking around the hospital and musing on the possibilities, Hy Sedrate determines that a highly visible project that he is capable of supervising lies in the number of medications that are either incomplete or inaccurate when they are delivered from the pharmacy. “Prescription drugs are always in the news,” he figures, “so everyone will notice our improvement.”

With that confidence, he arranges for the pharmacists to gather data relating to missed medications. Hy Sedrate knows that he will have plenty of data in this area, since the pharmacy has been collecting data for the Joint Commission on Healthcare Accreditation. He decides that the data should be considered as attributes data, since he will be measuring nonconforming items, defined as those medications that fail to be delivered on time. Further, he believes that an np-chart is the appropriate way to analyze the data, since in effect he will be examining the number of deliveries with mistakes.

He develops the following chart, based on the data provided by the pharmacists:

np Control Chart

When he sees the chart, Hy Sedrate is somewhat disappointed, since the system seems to be in control. “I was hoping to see lots of out-of-control points so we could eliminate special causes,” he mutters to himself, deciding that this np-chart gives him nothing dramatic with which to enhance his portfolio in the hospital. He’s so worried about what he can do that he finds himself losing sleep at night. Is his anxiety merited?

Hy Sedrate’s high blood pressure is pointless, since the pharmacy process gives him plenty of opportunities to improve quality. The point is not just to identify out-of-control conditions, but to improve the process. The np-chart reflects that the process is now generating an average of 10.2 non-conformities per week.

With the use of brainstorming, cause-and-effect analysis, Pareto diagrams, and other problem solving and data analysis tools, Hy Sedrate’s improvement team can identify ways to reduce the number of missed prescriptions even further.

Pareto Chart of Medications Not Being Delivered On-Time

Quality improvement is not simply data gathering, but analyzing data and organizing it in order to determine ways to improve the process. The Plan-Do-Study-Act cycle focuses on continuously examining processes in order to bring them to even greater levels of predictability.

Tags:  

Register Now

  • Stop this in-your-face notice
  • Reserve your username
  • Follow people you like, learn from
  • Extend your profile
  • Gain reputation for your contributions
  • No annoying captchas across site
And much more! C'mon, register now.

Leave a Comment



Comments

Rip Stauffer

Not bad…the Pareto Chart is missing some things, though. The left scale is generally counts, while the right scale is percentages of the whole.

Reply


5S and Lean eBooks
GAGEpack for Quality Assurance
Six Sigma Statistical and Graphical Analysis with SigmaXL
Six Sigma Online Certification: White, Yellow, Green and Black Belt
Lean and Six Sigma Project Examples
Six Sigma Online Certification: White, Yellow, Green and Black Belt

Find the Perfect Six Sigma Job

Login Form