The Development and Validation of an Objective Assessment Tool for Performing Ultrasound-Guided Transversus Abdominis Plane Blocks

The transversus abdominis plane (TAP) block is a regional anesthesia technique used as part of a multimodal pain management plan in patients undergoing abdominal surgery. There are numerous approaches and techniques described in the literature, resulting in a lack of consistency in block performance. This potentially reduces efficacy while increasing risk to the patient. Competency assessment tools have been shown to lower patient risk and improve outcomes by improving provider skill. Checklists are used as formative and summative assessment tools throughout healthcare education, however, there is no validated tool for ultrasound-guided TAP blocks. The purpose of this evidence-based project was to develop a checklist using a modified Delphi method. The primary outcome measure was validation of the assessment tool, established by an expert panel consensus and guided by Messick's validity framework. A 43-item checklist was validated by six certified registered nurse anesthesiologists throughout the United States with expertise in regional anesthesia. Three rounds of feedback were required to exceed the threshold of consensus (0.8), establishing a method of evaluation that may allow future research in educational settings through improved skill assessment among providers performing TAP blocks.