PDF(Pubmed)
Abstract：
A decrease in the infection rates in the operating room (OR) is attributable to advances in sterile technique; heating, ventilation, and air-conditioning (HVAC) filtration; and limiting the number of people entering and leaving the OR. However, some infection complications after open heart procedures have been linked to the discharge fans of surgical equipment, most notably from the LivaNova 3T. We believe that surgical infection within the OR may also be due to other devices with internal fans. The purpose of this study was to 1) identify surgical equipment with an internal fan and see how they affect the airflow in an OR, 2) use the equipment to positively affect airflow to possibly reduce the risk of surgical site infections, and 3) bring attention to the HVAC system ability to exchange air throughout the OR. By using a fog machine and multiple camera angles, we identified the devices that have an effect on the airflow. We saw that the direction of the intake vent of specific devices can change the direction of airflow and possibly help to remove air. Last, we showed how the current HVAC air exchange rate might not be enough to remove contaminated air within the OR. Understanding intake and discharge vents for all equipment is important because sterile contamination and wound infection may be minimized or mitigated completely by simply repositioning a few devices.
摘要：
手术室（OR）感染率的下降归因于无菌技术的进步；加热，通风,和空调（HVAC）过滤；并限制进出OR的人数。然而,心脏直视手术后的一些感染并发症与手术设备的排出风扇有关，最著名的是LivaNova3T。我们认为，手术室内的手术感染也可能是由于其他带有内部风扇的设备。这项研究的目的是1）识别带有内部风扇的外科手术设备，并查看它们如何影响OR中的气流，2）使用设备积极影响气流，以可能降低手术部位感染的风险，和3）提请注意HVAC系统在整个OR中交换空气的能力。通过使用雾机和多个摄像机角度，我们确定了对气流有影响的设备。我们看到，特定设备的进气口的方向可以改变气流的方向，并可能有助于去除空气。最后,我们展示了当前的HVAC空气交换率可能不足以去除OR内的污染空气。了解所有设备的入口和排放口是重要的,因为无菌污染和伤口感染可以通过简单地重新定位一些设备来最小化或完全减轻。
