Context

One of the most important goals of inpatient psychiatric care is to provide a safe and therapeutic environment for both patients and staff. A small number of aggressive or agitated patients are difficult to sedate, even after multiple doses of sedating antipsychotics. Adverse effects can result in harm to the patient and staff and that observations are conducted without touching the patient.

Aim

This study aims to determine if motion magnification can improve the feasibility of non-contact respirations monitoring over a video feed.

Methods

Registered nurses were invited to view seven pairs of pre-recorded footage of healthy volunteers and count the number of breaths that they observe over a period of one minute for each. One of the paired videos was unprocessed and the other magnified the motion of chest rise and fall.

Results

Nursing observation of respirations showed an improvement in reduction of count error from 15.7 % to 1.5 % after video magnification of respiratory movement. Nurses also stated that viewing the processed video was much easier to make their observations from.

Conclusion

It is possible to use magnified video to monitor respirations of patients during circumstances where it is potentially difficult to obtain. Further observational studies should be conducted on a larger scale with this type of technique and is urgently needed to inform practice.

中文翻译：

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对基于视频放大的急性精神健康环境中呼吸频率监测系统的评估

语境

住院精神病治疗的最重要目标之一是为患者和医护人员提供安全和治疗的环境。即使经过多次镇静抗精神病药的服用，少数积极的或躁动不安的患者也难以安定下来。不良影响可能会伤害患者和医护人员，并且观察时请勿触摸患者。

目标

这项研究旨在确定运动放大率是否可以提高通过视频源进行非接触式呼吸监控的可行性。

方法

邀请注册护士查看七对预先记录的健康志愿者的录像，并计算他们在每一分钟的一分钟内观察到的呼吸次数。配对的视频之一未经处理，另一视频放大了胸部上升和下降的运动。

结果

呼吸运动的护理观察显示，将呼吸运动视频放大后，计数误差从15.7％减少到1.5％有所改善。护士们还说，观看处理过的视频更容易进行观察。

结论

在可能难以获得的情况下，可以使用放大的视频来监视患者的呼吸。应该使用这种技术在更大范围内进行进一步的观察研究，并且迫切需要为实践提供参考。