This article, titled “A Structured Approach to Transforming a Large Public Hospital Emergency Department via Lean Methodologies,” details a systematic framework for redesigning Emergency Department (ED) practices to enhance efficiency, quality, safety, and cost-effectiveness. Authored by Trushar Naik, Yves Duroseau, Shahriar Zehtabchi, Stephan Rinnert, Rosamond Payne, Michele McKenzie, and Eric Legome, this publication offers critical insights for EDs looking to adopt continuous improvement strategies.
Addressing Modern Healthcare Challenges: Emergency Departments are at the forefront of the growing challenges faced by the healthcare system, including:
- Increasing patient visits
- Higher patient acuity
- An aging populace
- Declining reimbursement
To tackle these issues, many health systems are drawing upon improvement strategies from the business and manufacturing sectors, specifically Lean methodologies, which are recognized for successful efficient operations.
The Lean Conceptual Framework and Its Application: Lean methodology is presented as a philosophy, process, and structured problem-solving system designed to bring leaders and staff together to continuously improve productivity, efficiency, and quality to deliver value to the customer. Key principles and terms of Lean include:
- Continuous improvement (kaizen): The pursuit of perfection.
- Eliminate waste (muda): Anything that does not add value to the customer, such as waiting, processing, motion, defects, or misallocation.
- Achieve smooth, level/even (heijunka), continuous workflow.
- Create error-proof (poka-yoke) processes.
- Empower staff/processes (jidoka): To identify defects and halt the system if a defect occurs.
- Empowerment, respect, and shared responsibility: Enabling higher performance.
- Customer-defined value: Delivered on demand.
The study highlights several Lean tools central to its transformation efforts:
- A3 Thinking: A problem-solving method conceptualized and communicated on a single sheet of A3-sized paper.
- Value Stream Analysis (VSA): Analysis of activities to deliver a service, including value-added and wasteful steps.
- Rapid Improvement Events (RIEs): Focused, intensive, team-based workshops applying Lean principles to analyze processes, propose solutions, and test new processes for immediate workflow improvements.
- Standard Work: Agreed-upon work procedures, responsibilities, and expectations designed to create predictable outcomes.
A Systematic Approach to ED Transformation: The paper outlines a systematic approach to applying Lean principles across the entire ED patient experience in a high-volume, safety-net ED within a large public hospital in a New York City borough. The transformation involved executive planning of RIEs and was rolled out over an 18-month timeframe, starting in October 2009.
The structured implementation included:
- Executive Vision and Planning: A hospital executive lean steering committee identified the ED as a key value driver based on “True North metrics” (human development, quality/safety, access/timeliness, cost, growth/revenue). Departmental goals were aligned with hospital-wide targets, such as a 20% improvement in timeliness of care.
- ED Vision and Planning: An ED lean steering committee was formed, trained in Lean, and tasked with oversight, RIE planning, performance monitoring, and reporting. A 3-day Value Stream Analysis (VSA) mapped the current state, envisioned a future state, and identified “gaps” for improvement.
- Rapid Improvement Events (RIEs): RIEs were held monthly, engaging 8–12 member teams of front-line staff, including “fresh eyes,” guided by a facilitator and overseen by a process owner. These events were partitioned by patient flow (e.g., login to triage, triage to provider) and sequenced to emulate the patient’s experience.
Key Interventions and Observed Improvements: The lean transformation led to significant changes in various ED processes, including:
- Registration and Triage: Transformed from a multi-step, sequential process to a streamlined, single-location, team-based approach.
- Radiologic Exams: Shifted from a “push” model (ED sending patients) to a “pull” model (radiology staff retrieving patients), with dedicated staff for transport.
- Charge Nurse and Patient Flow: Replaced paper-based tracking with an existing computerized patient tracking system, transitioning patient call-in, bed check-in, and bed availability management to nursing, and creating a patient flow coordinator position.
- Mid-level Provider in Triage: Instituted protocol-based order sets post-triage to facilitate work-up for common complaints and rapid disposition of treat-and-release patients.
- Other interventions included supplies consolidation, standard treatment room stocking, phlebotomy queue creation, and admissions bed request redesign.
Positive Outcomes: After the lean implementation, the study noted significant improvements in several performance metrics:
- Overall Length of Stay (Login to Disposition Time): Declined from a median of 4.6 hours to 4.0 hours (p < 0.001).
- Time to Triage (Login to Triage Time): Decreased from a median of 0.6 hours to 0.3 hours (p < 0.001).
- Time to Provider (Login to Provider Time): Reduced from a median of 2.1 hours to 1.6 hours (p < 0.001).
- Provider Productivity: Improved by 18.8% in the first quarter of 2011 compared to baseline. These improvements occurred despite a 7.3% rise in median monthly ED patient visits during the post-implementation period.
Key Lessons Learned for Sustained Improvement: The authors highlight several critical lessons from their experience:
- Executive Commitment: Essential at both hospital and departmental levels to demonstrate support, encourage interdepartmental collaboration, remove barriers, and allocate resources.
- External Stakeholder Engagement: Vital for success, especially for processes administered by departments outside the ED’s control.
- Sustainment Challenges: New workflows often struggled to stick, especially with night staff or during high patient volumes.
- Strategies for Sustainment:
- Clear communication and in-servicing of new processes.
- Initiating new processes during off-peak times with process owners and executive staff present.
- Including representatives from all shifts in RIEs.
- Developing clinical “champions” (front-line staff becoming experts in new workflows) and mid-level managers.
- Realistic Goal Setting: Initial improvement goals were sometimes overly ambitious or based on incomplete data, leading to impractical targets.
- Data Capture: The need for robust data collection mechanisms for new metrics was identified.
Transformation in a Safety-Net Public Hospital: The study acknowledges the unique challenges of implementing Lean in a safety-net hospital, which faces significant resource and patient population constraints. These include limited revenue expansion opportunities, difficulties in expanding capital and human resources, challenges with union agreements affecting new employee responsibilities, and the complexities of culture change with long-tenured employees. Despite these limitations, the insights gained in organizational culture change through Lean transformation are broadly applicable across healthcare workforces.
In conclusion, this structured, systematic application of Lean methodologies in a large public hospital ED demonstrates promise in improving care, providing invaluable insights for departments seeking comprehensive, continuous improvement.
Reference:
Naik, T., Duroseau, Y., Zehtabchi, S., Rinnert, S., Payne, R., McKenzie, M., & Legome, E. (2012). A structured approach to transforming a large public hospital emergency department via lean methodologies. Journal for Healthcare Quality, 34(2), 86–97.