Au Yong Jo Anne, Case J Brad, Kim Stanley E, Verpaalen Valentine D, McConkey Marina J
Department of Small Animal Clinical Sciences, University of Florida, Gainesville, Florida.
Department of Clinical Sciences, Colorado State University, Fort Collins, Colorado.
Vet Surg. 2019 Aug;48(6):975-984. doi: 10.1111/vsu.13218. Epub 2019 Apr 24.
To evaluate the usefulness of a high-fidelity model for teaching ovariohysterectomy (OHE) to veterinary students.
Longitudinal survey.
Clinicians with ≥2 years postgraduate experience in small animal surgery and a sophomore veterinary student population at 1 institution.
Twelve clinicians evaluated the high-fidelity model for realism. Questionnaires were distributed to sophomore veterinary students prior to and after OHE training on the high-fidelity model (SynDaver Surgical Canine) and after performing OHE as primary surgeon with a live dog. Time for students to perform OHE (identify the first ovarian pedicle to transecting the uterine body) and number of technical errors (visceral injury, hemorrhage, loose ligatures) were compared between the model and live dog groups.
Evaluators rated the high-fidelity model as moderate-to-highly realistic. Students' confidence improved after practicing on the model in all critical steps and additionally improved after performing an OHE on a live dog. Time to complete the OHE on the model (mean ± SD,73.4 ± 27.1 minutes) and live dogs (83.0 ± 24.7 minutes) did not differ (P = .20). Frequency of hemorrhagic events (P = .77) and accidental visceral injury (P = .30) did not differ between the model and live dogs. However, fewer loose ligatures were placed in live dogs (23/64) compared with the model (22/37; P = .02).
The high-fidelity model improved the confidence of sophomore students. The duration of OHE did not differ between the model and live dogs.
The high-fidelity model is valuable for improving confidence in veterinary students prior to live-dog OHE.
评估一种高保真模型用于向兽医专业学生教授卵巢子宫切除术（OHE）的实用性。
纵向调查。
在小动物外科领域有≥2年研究生经验的临床医生以及一所院校的大二兽医专业学生群体。
12名临床医生评估高保真模型的逼真度。在对高保真模型（SynDaver Surgical Canine）进行OHE培训之前和之后，以及在作为主刀医生对活犬进行OHE之后，向大二兽医专业学生发放问卷。比较模型组和活犬组学生进行OHE（从识别第一个卵巢蒂到切断子宫体）的时间以及技术错误数量（内脏损伤、出血、结扎不牢固）。
评估者将高保真模型评为中度至高度逼真。学生在模型上进行所有关键步骤的练习后信心增强，在对活犬进行OHE后信心进一步提高。在模型上完成OHE的时间（均值±标准差，73.4±27.1分钟）和在活犬上完成OHE的时间（83.0±24.7分钟）无差异（P = 0.20）。模型组和活犬组出血事件的发生率（P = 0.77）和意外内脏损伤的发生率（P = 0.30）无差异。然而，与模型组（22/37）相比，活犬组放置的结扎不牢固的情况较少（23/64；P = 0.02）。
高保真模型提高了大二学生的信心。模型组和活犬组OHE的持续时间无差异。
高保真模型对于提高兽医专业学生在对活犬进行OHE之前的信心很有价值。
