Wenjiaxinbo first people's Hospital of Jining City, Shandong Province
The humidity control of operating room has an important influence on the effect of patients' operation. Whether the humidity control of operating room is normal or not has a great influence on the operation quality. Therefore, the state has set strict standards for the humidity and temperature of operating room. The humidity in the operating room is not constant, but is adjusted according to the needs of the specific operation and seasonal changes. This paper discusses the quality control of temperature and humidity in the operating room, in order to provide a reference for creating a good operating environment.
One
Present situation of purification system in operating room
The purification system of the operating room is the most important place, but also the most easily ignored place. Many operating rooms in the purification system due to neglect of maintenance and repair, after many years of operation began to appear.
One
Bacteria test not up to standard
Due to the lack of inspection and maintenance of the purification system in the operating room, after many years of operation, the air in the operating room began to make the patients feel chest tightness and dizziness. After testing, it was found that the bacteria in the air in the operating room had exceeded the standard seriously, because the purification system would bring some fresh air to maintain the humidity required by the operating room, but the purification system reduced the cleanliness As a result, the bacteria in the air seriously exceeded the national standard.
According to the latest national requirements for operating room humidity, when the relative humidity reaches 50%, the bacteria will die after floating in the air for about 10-12 minutes; when the relative humidity is far greater than 50%, the bacteria floating in the air are likely to survive for more than 24 hours or even longer; when the relative humidity is far less than 50%, the bacteria floating in the air can also survive for more than 24 hours, or even longer Longer. Only when the relative humidity is too high, it will seriously affect the comfort of the human body, resulting in chest tightness, dizziness and other symptoms. Therefore, keeping the humidity change in the operating room is beneficial to reduce the survival rate of bacteria.
Two
Increased surgical infection rate
When the humidity in the operating room is more than 50% or less than 50%, the survival time of the bacteria in the air will be prolonged. These bacteria will not only enter the body with the breath of the human body, leading to the occurrence of diseases, but also attach to the surgical instruments and surrounding objects. When doctors use the medical instruments to operate for the patient, the bacteria may cause the infection of the surgical wound of the patient, increasing the risk of surgery Sex. As a result, patients may have a series of corresponding complications after operation. Therefore, the purification system is very important to keep the humidity in the operating room, and it must be paid attention to.
Two
The reasons for the unqualified humidity quality in operating room
And Solutions
Starting from the principle of the purification system in the operating room, this paper analyzes and checks it, and explains the causes and methods.
One
Drain pipe of condensate pan of purifier is blocked
One
Analysis
Due to the lack of maintenance all year round and the objective reasons such as vibration during operation, the interface of some pipes in the purification system is higher than the outlet of the condensate pan, and the excess liquid can not be discharged normally, resulting in the high humidity in the purification system body, thus breeding a large number of bacteria, which will generate bacteria, dust adsorption, etc. during operation, resulting in the fresh air generated by the purifier The bacteria in the fuselage follow the fresh air into the operating room.
Two
Method
Increase the tee and valve to the outlet of the purification system, adjust the slope of the drain pipe, and drain the water. This method can not only adjust the problem of the drain pipe, but also help to clear the sediment in the pipe and facilitate the later maintenance [7]. It is also important to set a reasonable water seal in the negative pressure section.
Two
Water supply and drainage of humidifier of purifier is not smooth
One
Analysis
As one of the four elements of air conditioning, humidifier is a very important and vulnerable part. The water supply and drainage of humidifier is very important. The humidifier needs to be cleaned frequently. If it is not cleaned frequently, the dirt in the water may accumulate and block the pipeline, which will cause the humidifier to stop water supply or drainage, thus causing bacteria breeding and humidity in the operating room out of control.
Two
Method

Clean the water supply and drainage pipes of the humidifier. Similarly, install tee joints and valves at the outlet of the drainage pipe of the humidifier to facilitate cleaning and maintenance. Then install a water processor at the water supply end of the humidifier to exclude the scale during water supply, which is conducive to reducing the formation of scale in the humidifier and reducing the risk of pipe blockage.

Three
Refrigeration system failure
One
Analysis
Due to the lack of cleaning, the pipes of the cold and heat source unit are blocked by dirt, and the blockage of the surface cooler in the unit accumulates, which leads to the increase of resistance in the unit, the shortage of pump pressure, the failure of circulating water pressure in the unit, and the poor refrigeration effect, thus leading to the poor control rate of the surface cooler to humidity.
Two
Method
The treatment method is the same as that of humidifier. Firstly, clear the blockage in the cold and heat source unit, dredge the pipeline, and wash the scale and other silt with water; secondly, install a water processor at the water inlet end of the circulating water. When the natural water enters the circulating water, the water processor will filter the dirt in the water to reduce the possibility of scale blocking the pipeline. If the cooling effect is still not good after cleaning and adding water processor, the pump can be changed.
Four
Failure of insulation layer of air supply and return pipe in purification equipment layer
One
Analysis
The insulation layer of the air supply and return pipes of the purification equipment layer is a part that is easy to be ignored. After years of use, the insulation layer of some pipes may have problems such as aging and falling off, pulverization, dust blocking, etc., which will lead to the failure of the insulation layer, loss of cold and heat efficiency, resulting in the purification effect of the air in the operation of the air supply and return of the purification equipment layer is not up to the standard, while the humidity standard in the air Naturally, it can't be reached.
Two
Method
In case of falling off and pulverization of insulation layer, it can be replaced or repaired directly, and the water blocked by dust can be cleaned.
Five
Air leakage of purification unit
One
Analysis
As the cover plate on the cabinet of the purification system is cracked, a gap is generated, thus causing air leakage. Air leakage may affect the effect of air purification, reduce the quality of purified air, and lead to the decline of humidity quality in the operating room.
Two
Method
Seal the gap of the cabinet cover plate with sealant again. When sealing, heat preservation materials can also be used to solve the problem of condensation water in the fan cabinet.
Six
The electric water quantity controller of the surface cooler on the cold source water circulation system is out of order
One
Analysis
The electric water quantity controller is very important for the refrigeration effect of the surface cooler. The electric water quantity controller may fail in part or in whole, which needs to be checked. Generally, as long as a small part of the electric water quantity controller is out of order, the refrigeration effect of the refrigerator may be reduced, and the humidity quality of the operating room may be reduced, thus causing adverse consequences.
Two
Method
Open the inside of the system, disassemble the electric water volume controller for inspection, repair the damaged part, and replace the parts that have been aged or damaged completely and have lost the maintenance value.
Three
Practical application of humidity control in operating room purification system
Indoor humidity control can not always be maintained at a level. The change of air humidity in the operating room needs to be regulated with the needs of the operation and the changes of the four seasons. In order to keep the humidity of the operating room constant, it is necessary to purify the refrigeration and humidification system according to the real-time change of the air humidity outside the fresh air.
In winter, the air is relatively dry and cold, and the air humidity is small, so it is necessary to adjust the purification system to increase the humidity; in summer, the air is hot and humid, and the humidity in the air is large, so it is necessary to adjust the purification system to reduce the humidity of the air, keep the humidity in the operating room at a suitable standard, and reduce the survival rate of bacteria as much as possible, so as to reduce the operation The risk of improving the success rate of surgery.
The control of the purification system in the operating room needs to be considered. First of all, the temperature and humidity data of the return air in the operating room need to be collected. According to the data changes, the air humidity needed in the operating room in different periods of time needs to be calculated. For example, the humidity needed in the daytime and at night is different. The temperature in the white weather is high, the air humidity is often small, and the temperature in the evening is low, and the air humidity is often large. In winter and The temperature and humidity of the air in summer are also inconsistent. It is necessary to collect data, calculate the required temperature and humidity data, use the purification system to adjust, and output the required humidity through the cold and heat source unit and humidifier.
However, although the air humidity in the operating room can be controlled by the purifier, it is only adjusted to a theoretical level, because the air in the operating room is flowing, when the door is opened or closed, the air in the operating room and the indoor will exchange, thus damaging the air humidity in the operating room.
The humidity in the operating room can only be controlled within a standard range. Complete and accurate humidity control does not exist. For the purification system, we need to ensure that the air humidity output through it is qualified, the humidification quality added to the purification air supply system is qualified, and there is no excessive bacteria. Therefore, the maintenance and detection of the purification system in the operating room should be carried out regularly, which is the key object that cannot be ignored.
Four
Concluding remarks
Improving the humidity quality of the operating room can control the occurrence of infection well, which is the necessary guarantee to improve the safety of the operation. Therefore, when the hospital checks the operating room, the purification system is a key inspection object and an important link to ensure the medical quality of the hospital.
Shandong ed purification Engineering Co., Ltd., founded in August 2010, has been committed to the construction of special departments in the hospital for ten years. It is a professional enterprise engaged in clean operating room purification, clean operating room decoration, ICU ward construction, newborn NICU construction, CCU ward, hospital laboratory, central supply room decoration, laminar flow ward construction, vein configuration center design and construction. The main service object is a large, medium and small hospital, which has the qualification of professional contracting related to purification engineering. There are many industry cases. Welcome new and old customers to come for consultation. For more knowledge of clean room purification industry, please pay attention to WeChat public address: Aide-188 (Ed purified oxygen supply).