Department of Pathology, University of Iowa Carver College of Medicine, DeGowin Blood Center, University of Iowa Hospitals & Clinics, Iowa City, USA.
Transfusion. 2011 Jul;51(7 Pt 2):1609-12. doi: 10.1111/j.1537-2995.2011.03221.x.
Labor efficiency is desirable in mobile blood collection. There are few published data on labor efficiency. The variability in the labor efficiency of mobile whole blood collections was analyzed. We determined to improve our labor efficiency using lean manufacturing principles.
Workflow changes in mobile collections were implemented with the goal of minimizing labor expenditures. To measure success, data on labor efficiency measured by units/hour/full-time equivalent (FTE) were collected. The labor efficiency in a 6-month period before the implementation of changes, and in months 1 to 6 and 7 to 12 after implementation was analyzed and compared.
Labor efficiency in the 6-month period preceding implementation was 1.06 ± 0.4 units collected/hour/FTE. In months 1 to 6, labor efficiency declined slightly to 0.92 ± 0.4 units collected/hour/FTE (p = 0.016 vs. preimplementation). In months 7 to 12, the mean labor efficiency returned to preimplementation levels of 1.09 ±0.4 units collected/hour/FTE. Regression analysis correlating labor efficiency with total units collected per drive revealed a strong correlation (R(2) = 0.48 for the aggregate data from all three periods), indicating that nearly half of labor efficiency was associated with drive size. The lean-based changes in workflow were subjectively favored by employees and donors.
The labor efficiency of our mobile whole blood drives is strongly influenced by size. Larger drives are more efficient, with diminishing returns above 40 units collected. Lean-based workflow changes were positively received by employees and donors.
移动采血中需要提高工作效率。目前关于工作效率的相关数据较少。本研究旨在分析移动全血采集工作效率的变化。我们决定使用精益制造原则来提高工作效率。
在移动采血中实施了工作流程的改变，目的是减少劳动力支出。为了衡量改进的效果，我们收集了每小时/全职等效单位（FTE）的劳动效率数据。分析并比较了实施改变前的 6 个月、实施后的第 1 至 6 个月以及第 7 至 12 个月的劳动效率。
实施改变前的 6 个月劳动效率为 1.06±0.4 单位/小时/FTE。在第 1 至 6 个月，劳动效率略有下降至 0.92±0.4 单位/小时/FTE（与实施前相比，p=0.016）。在第 7 至 12 个月，平均劳动效率恢复到实施前的 1.09±0.4 单位/小时/FTE。对劳动效率与每次采血活动采集的总单位数进行回归分析，显示出较强的相关性（所有三个阶段的数据汇总 R2=0.48），表明工作效率近一半与采血活动规模相关。员工和献血者主观上都倾向于采用基于精益的工作流程改变。
我们的移动全血采集工作效率受到规模的强烈影响。较大的采血活动效率更高，但超过 40 个单位后回报递减。员工和献血者对基于精益的工作流程改变表示认可。
