PDF(Pubmed)
Abstract：
BACKGROUND: Regional anesthesia is the favored choice in ruminant animals compared to general anesthesia, primarily due to its high safety margin and reduced demand for cost-intensive equipment in addition to its field applicability. Ultrasound-guided nerve block has gained significant attention in the field of veterinary medicine. This study utilized twenty-seven sheep of the native Rahmani breed to both demonstrate and evaluate the effectiveness of the ultrasound guided inferior alveolar nerve block technique.
METHODS: The research comprised three phases: Phase 1 involved an anatomical examination of mandibles and sheep heads to locate the mandibular foramen and delineate the mandibular nerve course. Phase 2 included ultrasound-guided injection of methylene blue dye at specific sites along the mandibular nerve in cadaveric sheep heads. In Phase 3, clinical implementation of ultrasound-guided inferior alveolar nerve blocks was conducted in 27 live sheep, assessing efficacy, onset, and duration.
RESULTS: Vertical extraoral ultrasound-guided nerve block was achieved successfully in 25 sheep (98%). A preliminary cadaveric study showed good distribution of the injectate at the mandibular nerve site. The mean onset time was 138 ± 18 s, and the mean duration time was 54 ± 4.1 min. Prominent analgesia of the ipsilateral mandible, medial surface of the cheek, and lateral border of the tongue was observed.
CONCLUSIONS: Ultrasound-guided mandibular nerve block holds promise as a technique for providing effective and safe anesthesia in sheep undergoing mandibular procedures.
METHODS: The research comprised three phases: Phase 1 involved an anatomical examination of mandibles and sheep heads to locate the mandibular foramen and delineate the mandibular nerve course. Phase 2 included ultrasound-guided injection of methylene blue dye at specific sites along the mandibular nerve in cadaveric sheep heads. In Phase 3, clinical implementation of ultrasound-guided inferior alveolar nerve blocks was conducted in 27 live sheep, assessing efficacy, onset, and duration.
RESULTS: Vertical extraoral ultrasound-guided nerve block was achieved successfully in 25 sheep (98%). A preliminary cadaveric study showed good distribution of the injectate at the mandibular nerve site. The mean onset time was 138 ± 18 s, and the mean duration time was 54 ± 4.1 min. Prominent analgesia of the ipsilateral mandible, medial surface of the cheek, and lateral border of the tongue was observed.
CONCLUSIONS: Ultrasound-guided mandibular nerve block holds promise as a technique for providing effective and safe anesthesia in sheep undergoing mandibular procedures.
摘要：
背景：与全身麻醉相比，区域麻醉是反刍动物的首选，主要是由于其较高的安全裕度和对成本密集型设备的需求减少，以及其现场适用性。超声引导下的神经阻滞在兽医学领域得到了广泛的关注。这项研究利用了27只本地Rahmani品种的绵羊来证明和评估超声引导下牙槽神经阻滞技术的有效性。
方法：该研究包括三个阶段：第一阶段包括下颌骨和羊头的解剖检查，以定位下颌孔并描绘下颌神经的走向。第2阶段包括在尸体羊头下颌神经的特定部位进行超声引导注射亚甲蓝染料。在第3阶段，对27只活羊进行了超声引导下牙槽神经阻滞的临床实施，评估疗效，发病，和持续时间。
结果：在25只绵羊（98％）中成功实现了垂直口外超声引导的神经阻滞。初步的尸体研究表明，注射物在下颌神经部位的分布良好。平均发病时间为138±18s，平均持续时间为54±4.1分钟。同侧下颌骨的突出镇痛，脸颊的内侧表面，并观察到舌的侧缘。
结论：超声引导下颌神经阻滞有望作为一种在接受下颌手术的绵羊中提供有效和安全麻醉的技术。
方法：该研究包括三个阶段：第一阶段包括下颌骨和羊头的解剖检查，以定位下颌孔并描绘下颌神经的走向。第2阶段包括在尸体羊头下颌神经的特定部位进行超声引导注射亚甲蓝染料。在第3阶段，对27只活羊进行了超声引导下牙槽神经阻滞的临床实施，评估疗效，发病，和持续时间。
结果：在25只绵羊（98％）中成功实现了垂直口外超声引导的神经阻滞。初步的尸体研究表明，注射物在下颌神经部位的分布良好。平均发病时间为138±18s，平均持续时间为54±4.1分钟。同侧下颌骨的突出镇痛，脸颊的内侧表面，并观察到舌的侧缘。
结论：超声引导下颌神经阻滞有望作为一种在接受下颌手术的绵羊中提供有效和安全麻醉的技术。
