Ruth Johnson – Dietetic Case Study

At Liverpool Heart and Chest Hospital, a small specialist cardiothoracic centre, surgical complexity increased and with no on‑site gastroenterology support, the service needed senior, autonomous dietetic decisions every day. As an Advanced Practitioner Ruth ensures safe decision‑making, stronger governance and alignment with NHS priorities. ​

Ruth completed the e-Portfolio (supported) route to gain recognition of the level at which she was practising. This promoted proactive structured care, safer PN pathways, clearer escalation processes, earlier metabolic decisions and smoother collaboration with consultants. As an AP dietitian, she has brought stability to her team, created space for education and research, and enabled innovations that ensure faster, more efficient patientcare.​

Population:

  • 35‑bed critical care unit (12 long‑term ITU beds + 23 post‑operative beds). ​
  • Supports cardiothoracic surgical patients: coronary artery bypass graft (CABG) and complex aortic surgery, including supra‑regional referrals. ​
  • Manages post–cardiac arrest patients admitted directly to critical care(bypassing ED). ​
  • Covers patients who are ventilated, sedated, septic, or in multi‑organ failure. ​
  • Supports increasing proportion of younger adults in population (around10–15 years younger than pre‑2020). ​
  • Growing adult congenital heart disease (ACHD) population returning for repeat surgery. ​
  • Manages gastrointestinal (GI) and metabolic complications that develop during cardiac care.

Outcomes/Impact

  • Service impact – AP leadership directly contributing to increased capacity, reduced unmet need and enhanced responsiveness to patient demand​
  • Patient outcomes – earlier identification and management of metabolic and GI complications, more consistent support for PN​
  • Workforce outcomes – a successful business case enabled recruitment of a Band 4 assistant, saving over £20,000 in unnecessary community oral nutritional supplement (ONS) prescribing​
  • Quantitative data (2024 – 2025) ​
  • Total dietetic contacts increased from 4251to 4399​
  • 26% increase in patient-facing time​
  • 69% reduction in unmet need (patients experiencing delayed dietetic review due to capacity constraints)​
  • ACHD contacts increased by 160%​
Four Pillars of Advanced Practice Clinical Practice Leadership and Management Education Research

Ruth incorporates the four pillars of practice in their role by:

Leadership

Manager of acute dietetic team, implementing Trust-wide nutrition policies, developing business cases for workforce expansion and QI projects, providing faster decision-making with fewer delays

Leadership and management icon

Research

 Annual conference poster production to strengthen research culture within the team, driving innovation for modern patient screening techniques (ultrasound muscle-mass assessment),project on ONS use that generated measurable clinical cost benefits 

Research Pillar