PDF(Pubmed)
Abstract：
The trigeminal nerve is responsible for innervating the periorbita. Ultrasound-guided trigeminal block is employed in humans for trigeminal neuralgia or periorbital surgery. There are no studies evaluating this block in dogs. This study aims to evaluate and compare two approaches (coronoid and temporal) of the trigeminal nerve block. We hypothesised superior staining with the coronoid approach. Thirteen dog heads were used. After a preliminary anatomical study, two ultrasound-guided injections per head (right and left, coronoid and temporal approach, randomly assigned), with an injectate volume of 0.15 mL cm-1 of cranial length, were performed (iodinated contrast and tissue dye mixture). The ultrasound probe was placed over the temporal region, visualising the pterygopalatine fossa. For the temporal approach, the needle was advanced from the medial aspect of the temporal region in a dorsoventral direction. For the coronoid approach, it was advanced ventral to the zygomatic arch in a lateromedial direction. CT scans and dissections were conducted to assess and compare the position of the needle, the spread of the injectate, and nerve staining. No significant differences were found. Both approaches demonstrated the effective interfascial distribution of the injectate, with some minimal intracranial spread. Although the coronoid approach did not yield superior staining as hypothesised, it presents a viable alternative to the temporal approach. Studies in live animals are warranted to evaluate clinical efficacy and safety.
摘要：
三叉神经负责支配眼周。超声引导的三叉神经阻滞在人类中用于三叉神经痛或眶周手术。没有研究评估狗的这种障碍。本研究旨在评估和比较三叉神经阻滞的两种方法（冠状和颞部）。我们假设冠状入路染色效果更好。使用了十三个狗头。经过初步的解剖学研究,每个头两次超声引导注射（左右，冠状和颞部入路，随机分配)，注射量为颅骨长度0.15mLcm-1，进行（碘化造影剂和组织染料混合物）。超声探头放在颞区,可视化翼腭窝。对于时间方法，针头从颞区的内侧向背腹方向前进。对于冠状面方法，它在内侧外侧方向上前进到the弓的腹侧。进行CT扫描和解剖以评估和比较针头的位置，注射剂的扩散，和神经染色。没有发现显著差异。两种方法都证明了注射剂的有效干扰分布，颅内扩散极小.尽管冠状突方法没有像假设的那样产生更好的染色，它为时间方法提供了一个可行的替代方案。有必要在活体动物中进行研究以评估临床疗效和安全性。
