How will the flow of personnel affect the purification of operating rooms?
Release time:2019-10-14 source:
The results showed that there was a positive correlation between the bacterial content in the air of clean operating room and the infection rate after operation. Because of the installation of air filter device in the operating room, the air entering the operating room is purified, and the dust and plankton bacteria in the air are effectively removed, which can effectively ensure the air cleanliness and the stability of the environment. Therefore, compared with the general operating room, it is more suitable for clinical operation. However, there are also many factors that can affect the air cleanliness of the operating room, such as purifying the flow of personnel in the operating room, opening and closing the doors of the operating room, the total number of people entering the operating room, etc., which will change the air flow direction of the operating room to a certain extent, affect the relatively closed state of the operating room, cause the invasion of outdoor pollutants, and accelerate the dispersion speed of human bacteria in the air. Thus, the bacterial content in the environment is increased, which poses a potential threat to patients.
Purification operating room
In this study, we found that the bacterial content in the air of clean operating room was positively correlated with the operation time, and highly correlated with the total number of admissions. The number of sediments and bacteria in 30 minutes increased significantly with the increase of the operation time and the number of admissions. The length of operation and the total number of admissions are the two main factors affecting the flow of personnel. Therefore, we believe that the flow of personnel in the operating room can significantly affect the bacterial content in the air of the operating room. Dust in the air not only contains various environmental pollutants, but also is the main carrier of bacterial attachment. Therefore, the number of dust particles in the air represents the degree of air cleanliness to a certain extent. Increasing the number of dust particles will not only bring chemical pollutants, but also bring potential pathogens and increase the risk of postoperative infection.
In the closed environment of the operating room, dust particles mainly come from scattered particles such as ground subsidence particles, personnel themselves and equipment caused by human activities, and are related to the filtration efficiency of the laminar flow filter device. This study found that although the number of dust particles in the operating room was far lower than the upper limit of the national standard under static conditions, under dynamic conditions, the number of dust particles in_ > 5 micron and_ < 5 micron increased sharply, and the increment of dust particles in unit volume air was highly positively correlated with the operation time and significantly positively correlated with the total number of entries. Based on this, we believe that the flow of personnel in the operating room can significantly increase the number of dust particles in the indoor air, which has a negative impact on the cleanliness of the indoor air. Therefore, in the case of uncontrollable operation time, minimizing the flow of personnel can effectively control the increase of dust particles in the air.
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