Open approach to the ventral transversus abdominis plane in the dog: evaluation and injectate dispersion in cadavers.

Objective: To evaluate a direct intra-abdominal approach to injection of the ventral transversus abdominis plane (TAP) and compare the dispersion of two volumes of injectate.

Study Design: Prospective anatomic and feasibility study.

Animals: A total of 10 canine cadavers weighing 9 ± 4 kg.