Ultrasound-guided thoracic paravertebral injection in dogs: a cadaveric study

Veterinary Anaesthesia and Analgesia
Diego A PortelaRobin D Gleed

Abstract

To describe ultrasound-visualized anatomy and the spread characteristics of a dye injected in the thoracic paravertebral (TPV) space under ultrasound guidance. Anatomic cadaver study. Seven dog cadavers. One cadaver was used to observe, identify, and describe the relevant TPV anatomy. In the remaining six, the left fifth TPV space was randomly assigned to be injected with either a low volume (LV; 0.05 mL kg(-1)) or high volume (HV; 0.15 mL kg(-1)) of dye. Subsequently, the contralateral side was injected with the alternative volume. Anatomic dissections were conducted to determine the incidence of complete spinal nerve staining (>1 cm circumferential coverage), number of contiguous spinal nerves dyed and the absence or presence of solution in particular locations. The ultrasound-visualized anatomy of the TPV space was defined as the intercostal space abaxial to the vertebral body, delimited by the parietal pleura ventrally and the internal intercostal membrane dorsally. The endothoracic fascia divides the paravertebral space into dorsal and ventral compartments. The target nerve was completely dyed in five of six and six of six injections in the LV and HV conditions, respectively. In one LV injection, the nerve was partially dy...Continue Reading

Citations

May 4, 2021·Veterinary Anaesthesia and Analgesia·Oscar Bautista Díaz DelgadoIvo Campagna
Mar 21, 2020·Veterinary Anaesthesia and Analgesia·Cristina de Miguel GarciaTatiana H Ferreira
Jun 2, 2021·Veterinary Anaesthesia and Analgesia·Francesco ZublenaFederico Corletto
Jul 6, 2021·Veterinary Anaesthesia and Analgesia·Alexander C S Thomson, Diego A Portela

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