How is the pharyngeal swab a sampling method?

The pharyngeal swab is a common test for respiratory infections, especially after our country was hit with the New Crown Pneumonia outbreak, and the pharyngeal swab collection method is now commonly used to target viral nucleic acids. If the throat swab is positive, it means the nucleic acid test is positive and the diagnosis is likely to be confirmed.

I. Purpose of the pharyngeal swab

The pharyngeal isthmus of a normal person should be cultured with the normal flora of the oral cavity and not be able to cause the growth of other pathogens. The bacteria in the pharynx mainly come from the outside world, and under normal circumstances will not cause disease, but in the body's systemic or local resistance is relatively weak, or under the influence of other external factors, infection may occur. Therefore, bacterial culture of pharyngeal swabs can isolate pathogenic bacteria and help in the diagnosis of a number of diseases, such as diphtheria, neococcal pneumonia, and acute pharyngitis.

Two, pharyngeal swab sampling steps

To do a pharyngeal swab test is like this: first check the medical prescription, label the specimen container, check the patient's information, explain the method of taking a pharyngeal swab for culture, and then light an alcohol lamp and tell the patient to open his mouth wide and take out the ? ah? sound to expose the pharynx. After that, a long swab in the culture tube is used to wipe the secretions from the palatal arches and pharyngeal tonsils on both sides with a sensitive movement, and after it is removed, the mouth of the test tube is sterilized on the flame of the alcohol lamp in time, and then the swab is inserted into the test tube, plugged tightly, and sent for examination in time. This method is quick and not too difficult for the average person.

Three, the principle of the throat swab

Because humans breathe and eat through the mouth, so the mouth will form all kinds of bacteria and viruses. And influenza, new coronary pneumonia and other diseases are transmitted through the respiratory tract, the pharynx is such bacteria, viruses gathered more places. Sampling with a throat swab, therefore, is to use secretions from the places where viruses are most likely to gather as samples, thus making it easy and quick to detect the type of virus and accurately diagnose the disease.

The pharyngeal swab test for the new coronavirus is now available at general hospitals across the country, at different prices and with different policies. Dear readers, do you understand?