目的:为耳鼻喉科普通内镜手术制造一种气溶胶防护罩(ACM),同时为患者提供纳米颗粒水平的保护。
方法:前瞻性可行性研究。
方法:使用新型ACM进行面对面测试。
方法:面罩是在Solidworks中设计并3D打印的。对10名健康志愿者进行了测量,这些志愿者戴着ACM,同时反复阅读彩虹通道,并在1分钟内以5秒的间隔用内窥镜进行强迫咳嗽或打喷嚏。
结果:志愿者之间产生的气溶胶颗粒数量差异很大。与单尾t检验相比,在0.3μm的粒径下,只有打喷嚏任务显示出显着增加(P=.013)。对于所有任务,0.5-µm和2.5-µm的粒径均显示出显着增加,而两个最大的颗粒尺寸,5和10µm,均无显著增加(P均<0.01)。随着吸力的关闭,30例事件中的3例(2例打喷嚏事件和1例咳嗽事件)颗粒计数增加,面具的内外。随着吸力的开启,30个事件中的2个事件在掩模外部具有颗粒计数的增加,而掩模内部的颗粒计数没有相应的增加。因此,粒子数的这些波动被确定为是由于室内粒子水平的随机波动。
结论:ACM将容纳刚性和柔性内窥镜以及器械,并可能防止患者产生的气溶胶泄漏,从而避免房间受到污染,并保护医护人员免受空气传染。
方法:2.
OBJECTIVE: To create an aerosol containment mask (ACM) for common otolaryngologic endoscopic procedures that also provides nanoparticle-level protection to patients.
METHODS: Prospective feasibility study .
METHODS: In-person testing with a novel ACM.
METHODS: The mask was designed in Solidworks and 3D printed. Measurements were made on 10 healthy volunteers who wore the ACM while reading the Rainbow Passage repeatedly and performing a forced cough or sneeze at 5-second intervals over 1 minute with an endoscope in place.
RESULTS: There was a large variation in the number of aerosol particles generated among the volunteers. Only the sneeze task showed a significant increase compared with normal breathing in the 0.3-µm particle size when compared with a 1-tailed t test (P = .013). Both the 0.5-µm and 2.5-µm particle sizes showed significant increases for all tasks, while the 2 largest particle sizes, 5 and 10 µm, showed no significant increase (both P < .01). With the suction off, 3 of 30 events (2 sneeze events and 1 cough event) had increases in particle counts, both inside and outside the mask. With the suction on, 2 of 30 events had an increase in particle counts outside the mask without a corresponding increase in particle counts inside the mask. Therefore, these fluctuations in particle counts were determined to be due to random fluctuation in room particle levels.
CONCLUSIONS: ACM will accommodate rigid and flexible endoscopes plus instruments and may prevent the leakage of patient-generated aerosols, thus avoiding contamination of the room and protecting health care workers from airborne contagions.
METHODS: 2.