Objective

To determine whether final year veterinary students take longer to perform endotracheal intubation than qualified veterinary surgeons.

Study design

Observational cohort study.

Animals

A total of 38 healthy mesocephalic dogs undergoing general anaesthesia for a clinical purpose unrelated to this study.

Methods

Time to successful endotracheal intubation, measured from termination of intravenous induction drug administration to confirmation of endotracheal intubation, was recorded for two groups: final year veterinary students (group S) and qualified veterinary surgeons (group V). Animal age, breed and anaesthetic induction agent were also recorded. Following normality testing the groups were compared for each variable using the Student’s t test or Mann–Whitney U test where appropriate. The level of significance was defined as p < 0.05. Timed data are presented as median and interquartile range.

Results

Time to successful intubation was 54.2 (31.3) seconds in group S and 11.7 (8.5) seconds in group V, the difference being significant (p < 0.001). There was also a significant difference between groups for animal age (p = 0.036) but not for breed (p = 0.573) or induction agent (p = 0.239).

Conclusions

and clinical relevance Veterinary students take longer to achieve successful endotracheal intubation of anaesthetized healthy dogs compared with qualified veterinary surgeons. To mitigate any additional risk of dogs developing hypoxaemia, it is recommended that a 55 second time limit is set after which the supervisor intervenes and takes over the intubation procedure. Preoxygenation may be used as an additional mitigation strategy.

中文翻译：

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犬气管插管所需时间：兽医学生与合格兽医的比较

客观的

确定最后一年的兽医学生是否比合格的兽医需要更长的时间来进行气管插管。

学习规划

观察性队列研究。

动物

总共 38 只健康的中头犬因与本研究无关的临床目的而接受全身麻醉。

方法

记录两组成功气管插管的时间，即从静脉诱导药物给药终止到气管插管确认的时间：最后一年的兽医学生（S 组）和合格的兽医外科医生（V 组）。还记录动物年龄、品种和麻醉诱导剂。正态性检验后，在适当的情况下使用学生t检验或曼-惠特尼U检验对各组的每个变量进行比较。显着性水平定义为p < 0.05。定时数据以中位数和四分位数范围表示。

结果

S 组成功插管的时间为 54.2 (31.3) 秒，V 组为 11.7 (8.5) 秒，差异显着 ( p < 0.001)。各组之间在动物年龄 ( p = 0.036)方面也存在显着差异， 但在品种 ( p  = 0.573) 或诱导剂 ( p  = 0.239) 方面没有显着差异。

结论

和临床相关性 与合格的兽医相比，兽医学生需要更长的时间才能成功对麻醉的健康狗进行气管插管。为了减轻狗发生低氧血症的任何额外风险，建议设定 55 秒的时间限制，之后主管进行干预并接管插管程序。预充氧可用作额外的缓解策略。