Section of Anesthesiology and Pain Management, Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA.
Section of Anesthesiology and Pain Management, Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA.
Vet Anaesth Analg. 2022 Jan;49(1):95-103. doi: 10.1016/j.vaa.2021.10.005. Epub 2021 Nov 3.
Several factors affect the quality of recovery from general anesthesia in horses. These can increase the likelihood of injury. Body and limb position during recovery may correlate with successful standing. The objective of this study was to identify the prevalence of and the factors associated with successful standing at the first attempt in horses undergoing general anesthesia.
Retrospective study.
Video of recovery and anesthetic records from 221 equine patients were reviewed by six veterinary students. Cases with poor video quality or incomplete anesthetic records were excluded. Demographic variables, type of procedure, perioperative drugs administered, assistance during recovery and body and limb positions during the first attempt to stand were recorded. Association between putative variables (including specific descriptors for body and limb position) and success for standing were analyzed using backward logistic regression; significance was set at 0.05. A decision tree for a successful attempt was created to predict the outcome of a recovery attempt based on these variables.
Extension of the carpal joints, head and neck alignment with the thoracic limbs, greater time in lateral recumbency, coordination during sternal recumbency, longer time to first attempt to stand and pelvic limb position were associated with successful standing at the first attempt. The association between extension of the carpal joints with wide base positioning of the pelvic limbs provided the best success rate for standing, whereas the association of flexed carpal joints and head and neck orientation different from the thoracic limbs resulted in a worse success rate.
Results suggest that certain limb and body positions displayed by horses during recovery may be associated with the likelihood of successful standing at the first attempt. These variables may be useful for assessing recovery quality in future research.
有几个因素会影响马全身麻醉后恢复的质量。这些因素会增加受伤的可能性。恢复过程中的身体和四肢位置可能与成功站立有关。本研究的目的是确定全身麻醉后马首次尝试站立成功的发生率及相关因素。
回顾性研究。
由 6 名兽医学生对 221 例马的恢复视频和麻醉记录进行了回顾。排除了视频质量差或麻醉记录不完整的病例。记录了人口统计学变量、手术类型、围手术期使用的药物、恢复过程中的辅助措施以及首次尝试站立时的身体和四肢位置。使用向后逻辑回归分析了疑似变量（包括身体和四肢位置的具体描述）与站立成功之间的关系；显著性设为 0.05。基于这些变量，创建了一个成功尝试的决策树，以预测恢复尝试的结果。
腕关节伸展、头颈部与胸肢对齐、侧卧时间更长、胸骨卧位协调、首次尝试站立时间更长以及后肢位置与首次尝试站立成功相关。腕关节伸展与后肢宽基定位的联合提供了最高的站立成功率，而腕关节弯曲和头颈部与胸肢方向不同的联合则导致站立成功率降低。
结果表明，马在恢复过程中表现出的某些四肢和身体位置可能与首次尝试站立成功的可能性相关。这些变量在未来的研究中可能有助于评估恢复质量。
