It is well known that the novel coronavirus is airborne, and the new coronavirus is able to attach to aerosol particles floating in the air to achieve transmission. At the same time, it can also attach to other objects and spread through human-to-human and object-to-human transmission.
As a designated isolation hospital with a high concentration of NCC patients, the concentration of NCC virus in the environment is also relatively high and the risk is also greater. In the isolation hospital, how to prevent the infection of health care workers and how to prevent the spread of contamination is a major focus.
The "negative pressure ward" has become an important means to prevent the leakage of germs.
So what is a "negative pressure ward"? What is the difference between it and a normal ward? How does it ensure the safety of patients and medical staff?
Like the "negative pressure laboratory", the negative pressure ward is a ward where the air pressure inside the ward is lower than the air pressure outside the ward, and due to the difference in air pressure, fresh air outside the ward can flow into the ward, but the contaminated air inside the ward does not flow out directly into the environment, but is discharged through a special pipe to the waste treatment equipment, and after the waste It can be discharged only after it has been treated by the waste treatment facility to a quality that can be discharged into the air.
In addition to the requirements for discharging air, the air entering the ward also needs to undergo a series of treatments before it can enter the ward. The "Design Guidelines for Emergency Treatment Facilities for New Coronavirus Pneumonia (for Trial Implementation)" issued by the National Health Commission in 2020 gives a detailed reference program for the renovation of negative pressure wards.
It is stipulated that: each negative pressure isolation ward needs to set up a set of 1500 m3/hour air volume fresh air system. The air supply should be processed by coarse, medium and sub-efficient filters, and two sets of exhaust systems should be set up, one with high-efficiency filters; sealing valves should be set on the air supply and exhaust ducts of each negative pressure isolation ward, and a sensing system should be set up to control the inverter fan to ensure that the negative pressure ward and the buffer and corridor maintain 5 Pa negative pressure.
In addition to the protection of medical personnel and treatment of patients through the negative pressure ward, the rapid detection of new crown nucleic acid is also required to be applied to the diagnosis and treatment of isolation ward. The results of the patient's treatment are determined by a rapid nucleic acid test once every two days.
In clinical practice, a patient with two consecutive negative standard NIC tests is presumed to be cured, but further testing of the lungs is required to prove this.
Therefore, nucleic acid testing is the benchmark for confirming the diagnosis, treatment and cure of neo-crown, and it is the most important and cannot be ignored tool under the epidemic normalization!
