Veterinary anaesthesia and analgesia
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To describe the ultrasound-guided transversus abdominis plane (TAP) block using a subcostal oblique approach in dog cadavers and to evaluate the spread of a methylene blue solution using a multiple-injection technique. ⋯ The ultrasound-guided subcostal oblique TAP block provided adequate staining of the sensory innervation of the cranial abdominal wall. Further studies are required to evaluate the efficacy of this technique in blocking the nociceptive response in clinical procedures.