Beijing’s epidemic prevention and control is in a critical period. 3 rounds of nucleic acid testing are being carried out in 11 regions. Health protection is the topic of most concern to citizens. “Health Tips” spread among friends and family through social media. Can drinking carbonated beverages cause false positives for nucleic acids? Do you need to “ah” out when doing nucleic acid? How often should masks be changed? Regarding the issues that everyone is concerned about, a reporter from Beijing Daily interviewed Li Tongzeng, chief physician of the Department of Respiratory and Infectious Diseases of Beijing You’an Hospital.
drink before nucleic acid,
Does cause a “false positive”?
“Do not drink water and gargle before doing nucleic acid, eat fruit, pickles, drink carbonated drinks, and wine, all are prone to false positives.” Recently, many people have received Such a “hint”. In this regard, Li Tong once said, The claim that diet causes false positives of nucleic acid has no scientific basis. Li Tong once said that whether it is nucleic acid testing or antigen testing, there is a certain probability of false positives. In contrast, nucleic acid testing is affected by fewer factors, and the probability of false positives is very low. There is no overall pattern in the occurrence of false positive results, which are mostly caused by laboratory contamination or improper operation. “We will remind citizens not to eat within 2 hours before the nucleic acid test, not to drink water for half an hour in advance, especially carbonated drinks, alcohol, not to smoke, not to chew gum. “Li Tong once said that this kind of prompt is mainly to avoid “falsenegativesex” during the nucleic acid detection process. He explained that drinking water, drinks, etc., will dilute oral secretions, which may lead to inaccurate test results. “Of course, this is also to prevent citizens from experiencing nausea and vomiting during the nucleic acid sampling process.”
Why don’t “ah” come out when doing nucleic acid?
Some experts suggest that during the nucleic acid detection process, it is best not to “ah” out. Why is this? Li Tong once explained, “Ah” is an exhalation action. If a positive patient exhales during the nucleic acid test, more virus will be excreted. Therefore, do not “ah” out, to protect others. How can you better protect yourself during the collective nucleic acid testing process? Li Tong once suggested that try not to take a deep breath after taking off the mask. “Before taking off the mask, you can take a breath. After taking off the mask, cooperate with the staff’s instructions, try to open the mouth as much as possible, and make the movements in place, so that the staff can take samples in one step. Put on your mask quickly afterward.” Li Tong once said that this action can be practiced in advance before doing nucleic acid. “To do nucleic acid collectively, the most fearful thing is to gather and talk.” Li Tong once said that citizens were queuing Keep a distance of more than one meter, don’t get together, don’t drink water, don’t eat, and especially don’t chat face-to-face. When the sampling of the person in front is over, wait for the staff’s instructions, do not sit down or take off the mask and wait, and try to reduce the time for taking off the mask. During the nucleic acid sampling process, do not place items on the countertop or touch the countertop with your hands. Wash your hands in time and keep your hands hygienic when you go home after finishing the nucleic acid. “You can prepare an alcohol wipe in advance and disinfect your hands immediately after the nucleic acid is done.”
How often should masks be changed?
How often should masks be changed? Is it possible for used masks to cause pollution? Li Tong once said that masks need to be replaced after 4 to 6 hours of continuous use. If it is not used continuously, you can calculate the accumulated usage time as appropriate. “Of course, if the mask is wet, soaked, or dirty, it needs to be replaced immediately.”When removing the mask midway, it is best to find a clean plastic bag or a clean piece of paper Wrap it up, or find a ventilated place to hang it. “Don’t put used masks in your pockets or school bags to avoid contaminating masks and contaminating items.” Li Tong once said.
(Source: Beijing Daily WeChat Official Account)