Optimising Acute Medical Unit (AMU) Flow: Strategies for Better Patient Journeys

Why This Topic Matters

Suboptimal patient flow in AMUs has far-reaching consequences across the entire hospital system. It contributes to significant delays in the Emergency Department (ED), impacts elective surgical cancellations due to bed shortages, and can lead to 'corridor care' – a practice explicitly discouraged by NHS England due to its associated risks. For patients, delays mean prolonged stays, increased risk of hospital-acquired infections, and potential for deconditioning. For staff, constant pressure and the inability to provide optimal care contribute to burnout and reduce job satisfaction.

Improving AMU flow is not merely an operational goal; it is a patient safety imperative. It aligns with national drivers such as the NHS Long Term Plan's focus on improving urgent and emergency care, and supports the delivery of high-quality, efficient care as measured by metrics like average length of stay, 4-hour ED targets, and patient experience.

Practical Explanation: Understanding AMU Flow

AMU flow can be conceptualised as a system with inputs (patients arriving), processes (assessment, diagnostics, treatment, discharge planning), and outputs (discharge home, transfer to specialist wards). Bottlenecks occur when any part of this system is slower than the rate of incoming patients, leading to accumulation.

Key components influencing AMU flow include:

• Timely Triage and Assessment: Rapid identification of patient needs and initial management.
• Diagnostic Pathways: Efficient access to and turnaround of imaging, laboratory tests, and specialist opinions.
• Treatment Commencement: Prompt initiation of appropriate medical interventions.
• Discharge Planning: Proactive identification of discharge needs from admission, involving multi-disciplinary team (MDT) collaboration.
• Bed Management: Effective communication and coordination with inpatient wards for timely transfers.
• Escalation and Early Warning Systems: Mechanisms to identify and address flow issues before they become critical.

Common Pitfalls in AMU Flow Management

Several common issues can hinder effective AMU patient flow:

• Delayed Diagnostics: Slow access to scans (e.g., CT, MRI) or delayed laboratory results can significantly prolong AMU stays.
• Waiting for Specialty Reviews: Dependence on specialist teams for reviews that could potentially be managed by the AMU team, or uncoordinated review times.
• Lack of Proactive Discharge Planning: Waiting until a patient is medically fit for discharge before initiating discharge planning, leading to delays in medication, transport, or social care arrangements.
• "Boarding" on AMU: Patients remaining in the AMU longer than clinically necessary due to lack of inpatient bed availability or delays in transfer.
• Ineffective MDT Huddles: Huddles that lack clear objectives, fail to assign actions, or don't involve all necessary stakeholders (e.g., therapy teams, social workers).
• Poor Communication: Gaps in communication between AMU, ED, ward teams, and community services regarding patient status and bed capacity.
• Resistance to Change: Staff reluctance to adopt new pathways or processes, often due to insufficient engagement or understanding of the benefits.

A Step-by-Step Approach to Improving AMU Flow

Improving AMU flow requires a systematic, multi-faceted approach. Consider these steps:

Step 1: Data Collection and Analysis (Understand Your Current State)

Before implementing changes, understand where your bottlenecks truly lie. Collect data on:

• Patient arrival patterns: When are the peaks?
• Length of stay (LoS) in AMU: What is the average LoS? What are the outliers and why?
• Time to key diagnostics: How long does it take for a chest X-ray, basic bloods, or a CT head?
• Time to specialist review: How long do patients wait for cardiology, surgical, or other reviews?
• Reasons for discharge delay: Why are patients staying longer than medically fit? Categorise these delays.
• Destination of patients: Proportion discharged home vs. transferred to ward, and to which wards.

This resource supports, but does not replace, clinical judgement. Local policy, formulary and specialist advice should be followed. Local audit and QI teams can provide support in data collection and analysis.

Step 2: Optimise Front-Door Processes

• Early Senior Review: Implement models for early consultant or experienced Advanced Clinical Practitioner (ACP) review of patients, ideally within 1-2 hours of arrival, to determine initial management plans and anticipated disposition.
• Rapid Assessment and Treatment (RAT) Areas: Consider designated areas for immediate assessment, basic investigations, and early treatment, potentially allowing for 'see and treat' or rapid discharge pathways for appropriate patients.
• Standardised Triage Tools: Utilise validated tools to quickly stream patients to the most appropriate pathway.

Step 3: Streamline In-Unit Processes (During the AMU Stay)

• MDT Ward Rounds/Huddles: Implement structured, twice-daily (or more frequent if high throughput) huddles involving medical, nursing, therapy, social work, and pharmacy staff. Focus on:
  • Reviewing all patients.
  • Identifying patients for discharge today/tomorrow.
  • Expediting investigations.
  • Planning for ward transfers.
  • Assigning clear actions and owners.
• Protected Diagnostic Slots: Work with radiology and laboratory departments to secure dedicated or prioritised slots for AMU patients, reducing waiting times for critical investigations.
• Early Therapy Input: Proactive involvement of physiotherapy and occupational therapy to assess mobility, functional independence, and discharge needs.
• Patient Flow Coordinator Role: Consider a dedicated professional (e.g., senior nurse, operational manager) to oversee flow, anticipate blockages, and coordinate transfers/discharges.

Step 4: Enhance Discharge Planning and Transfer Coordination

• 'Discharge to Assess' (D2A) Pathways: Promote pathways that allow patients to leave hospital to have their care and support needs assessed in a more appropriate community setting.
• Proactive Pharmacy Review: Early medication reconciliation and provision of 'TTOs' (To Take Out medications) to prevent delays.
• Clear Discharge Criteria: Establish clear, agreed criteria for medical fitness for discharge/transfer to ensure consistency.
• Communication with Inpatient Wards: Regular, structured communication about anticipated transfers, including patient acuity and care needs, to facilitate timely ward readiness. Engage ward staff in AMU huddles where possible.
• Transport Arrangements: Ensure efficient access to hospital transport or ambulance services for patients requiring assistance to get home.

Step 5: Continuous Monitoring and Improvement

• Key Performance Indicators (KPIs): Regularly review LoS, discharge times, transfer times, bed occupancy, and reasons for delay.
• Feedback Loops: Establish mechanisms for feedback from ED, inpatient wards, and patients.
• Quality Improvement (QI) Methodology: Use QI cycles (e.g., PDSA – Plan, Do, Study, Act) to test and implement changes in a structured way. Engage staff in identifying problems and co-designing solutions.

Example in Clinical Practice: Implementing a 'Discharge-Focused' AMU Huddle

An AMU team consistently identified that the biggest delay for suitable patients was the coordination of discharge after they were medically optimised. The huddle often focused on acutely unwell patients, leaving discharge planning until later in the day.

Intervention: The team implemented a structured, twice-daily 'Discharge-Focused Huddle' for 15-20 minutes, involving the consultant, registrar, ward sister/charge nurse, AMU managers, a therapist, and social worker liaison.

• Morning Huddle (09:00): Focused on identifying "discharge today" patients. Each patient on the board was briefly reviewed to confirm medical fitness. For those fit, specific actions were assigned: TTOs to pharmacy (Nurse A), transport booked (Ward Clerk), social work reviewed (Social Worker), discharge summary prepared (Registrar). Discrepancies between medical fitness and discharge readiness were explored immediately.
• Afternoon Huddle (15:00): Reviewed progress on morning discharge goals and identified any new patients who might be discharged by the evening or early next morning. It also addressed potential blockages for transfers to inpatient wards.

Outcome: Within six weeks, the average time from medical fitness to actual discharge reduced by 2 hours, and the proportion of patients discharged before 12 PM increased by 15%. This also freed up nursing time in the afternoon to focus on newly admitted patients.

How Lazomis Can Help

Lazomis offers a suite of tools that can support AMU teams in their journey to improve patient flow:

• Data Dashboards: Visualise key flow metrics like average LoS, time to discharge, and reasons for extended stays. Identify trends and bottlenecks quickly to inform your QI efforts.
• Process Mapping Tools: Digital tools to collaboratively map out your current AMU patient journey (current state) and design more efficient 'future state' pathways, identifying waste and delays.
• Project Management Suite: Structure your QI initiatives with clear objectives, assigned tasks, deadlines, and progress tracking, ensuring accountability and consistent execution of improvement plans.
• Communication & Collaboration Hubs: Facilitate real-time information sharing between AMU, ED, ward teams, and community partners, ensuring everyone is working from the same up-to-date patient information and discharge plans.

These tools centralise information and provide a structured approach to managing complex improvement projects, accelerating the identification of issues and the implementation of effective solutions.

Key Takeaways