Influenza refers to the influenza, which is caused by influenza virus, and has strong infectious effect. It is mainly transmitted by droplets, such as cough and sneezing. Influenza usually occurs in winter and spring.
At present, the method of influenza detection is rapid influenza antigen detection, detection of "a flow" and "B flow" antigen, and the sample of pharynx swabs is completed by personnel of the inspection department. In fact, all those who are engaged in the inspection work know that the quality of specimens is crucial to the accuracy and reliability of the results.
The pharyngeal swabs were collected by the inspection department, so professionals can avoid many false negative influenza detection caused by improper sample sampling. The precautions for influenza swabs are basically the same as those for nucleic acid detection. Because it is the same sampling.
What should we pay attention to to when doing influenza pharynx swabs? What should we pay attention to to when doing influenza pharynx swabs? What should we pay attention to to when doing influenza pharynx swabs? What should we pay attention to to when doing influenza pharynx swabs?
Precautions before influenza pharynx swabs:
The collection site of pharynx swabs is collected in the pharynx and tonsil of the subjects. The following points are noted:
① . do not drink water before the throat swab test, and do not drink water at least 30 minutes in advance. Because drinking water before the detection will dilute the virus attached to the pharynx, especially drinking hot water will inhibit the activity of the virus. In order to improve the accuracy of nucleic acid detection in the swab, do not drink water 15-30 minutes before the detection to ensure the high accuracy of the swab.
② The patients with good throat exposure are not recommended to make too long "ah ~" sounds to reduce the risk of occupational exposure of sample takers.
③ To avoid vomiting, do not eat food within two hours before the pharyngeal swab test.
④ Do not smoke, drink or chew gum within half an hour before the throat swab test.
If it is because of the children do a pharyngeal swab, parents must comfort the young children's mood, must be patient with the young children to communicate, let the child head as far as possible not to move.
What are the collection processes and methods?
way
1. Please sit down, tilt back, open the mouth, remove the secretion from the middle surface of the anterior nostril;
2. The tongue was fixed by pressure tongue plate, and the throat swab was used to cross the root of tongue to the posterior wall of pharynx, the recess of tonsil and the side wall;
3. The mucosal cells were collected by repeated wipe for 3-5 times;
4. Gently remove swabs to avoid touching tongue, pituitary, oral mucosa and saliva;
5. Swabs are inserted into the sampling device or in the appropriate transfer equipment.
notes
1. For suppurative pharyngitis, the bacteria culture of oropharynx swabs is mainly used for screening group A β- Streptococcus hemolysis and cryptobacillus hemolysis;
2. When we examine Neisseria gonorrhoeae in the swabs of oropharynx, the clinical need to inform the laboratory in advance;
3. For pediatric patients, Haemophilus influenza should be reported routinely;
4. Generally, the upper respiratory tract infection should not be diagnosed by using the swab alone. It is advisable to combine with the nasopharynx swab or nasopharynx aspirate to improve the detection rate of the pathogen of respiratory infection.
April 26, 2021
