Establishing an expert opinion framework for lung volume reduction in Ireland: a Delphi consensus technique

Lung volume reduction (LVR) is an effective treatment option offered to patients with emphysema. There is no formalised LVR referral network in Ireland. A rigorous approach to agreeing and implementing a LVR referral framework in an Irish context is required. A Delphi process was used to provide a basis for a framework of multi-disciplinary teams (MDTs) which can provide LVR as a management option. A Delphi process offers a framework for understanding variations and developing a consensus from expert opinion.

The aim of this study was to develop consensus on recommendations for LVR referral guidelines in an Irish context and provide a national scope based on current practice and evidence.

In accordance with Guidance on Conducting and Reporting Delphi Studies, a consensus-building Delphi study was performed. Thirty-three statements informed from review of research literature were identified and presented to participants. Evaluation of the statements was performed by an expert panel using a 5-point Likert scale. ≥ 70% agreement was defined as consensus and items with a consensus rating of < 70% were revised during the process. In total, Delphi questionnaires were distributed to 18 experts with a response rate of 78% (n = 14) and a follow-up response-rate of 50% (n = 7).

The expert panel in Ireland consisted of representatives from respiratory medicine, cardiothoracic surgery and allied-health professionals with expertise in COPD care.

Of the initial 33 statements in five dimensions, there were consensus regarding 31 statements.

The 31 statements agreed through this Delphi study clarify a coherent direction for development of a LVR framework in Ireland. The Delphi study methodology described is a useful process to reach consensus among multi-disciplinary experts.