Throat swab's information

Normal human pharyngeal isthmus culture should have normal oral flora, without the growth of pathogenic bacteria. The bacteria in the pharynx all come from the outside world and are not pathogenic under normal circumstances, but infections can occur when the body's systemic or local resistance declines and other external factors lead to diseases. Therefore, bacterial culture of throat swabs can isolate pathogenic bacteria, which is helpful for the diagnosis of diphtheria, suppurative tonsillitis, acute pharyngitis, etc.

Purpose of throat swab specimen collection

The secretions were collected from the pharynx and tonsils for bacterial culture or virus isolation.

Use of throat swab specimen collection

Throat swab culture tube, alcohol lamp, matches, tongue depressor, flashlight.

Step of throat swab specimen collection

1. Check the doctor's order, affix the label to the specimen container, and bring the material to the patient's bedside.

2. Check the patient and explain the purpose and method of taking a throat swab for culture.

3. Light the alcohol lamp, instruct the patient to open the mouth and make an "ah" sound, expose the throat, and wipe the secretions on both sides of the palatine arch, pharynx and tonsils with a sterile long cotton swab in the culture tube with sensitive and gentle movements.

4. After taking it, sterilize the mouth of the test tube on the flame of an alcohol lamp, then insert a cotton swab into the test tube and plug it tightly.

5. Timely inspection.

Clinical significance of throat swab specimen collection

If pathogenic bacteria are detected in sputum and throat swab secretions, it is regarded as a respiratory infection. It can be combined with other examinations (X-ray fluoroscopy, B-ultrasound, etc.) to diagnose the site of respiratory infection. Common bacteria in respiratory tract infections are: Staphylococcus, Streptococcus pneumoniae, Haemophilus influenzae, Klebsiella pneumoniae, Staphylococcus, Streptococcus, Pseudomonas aeruginosa, Escherichia coli, etc. If Mycobacterium tuberculosis is cultured, it is pulmonary tuberculosis. If yeast-like bacteria are cultured, consider whether antibiotics are used inappropriately or excessively during infection. Antibiotics should be stopped immediately and antifungal drugs, such as amphotericin B, griseofulvin, and clotrimazole, should be used instead.

Principle of throat swab specimen collection

Because both breath and food pass through the mouth, bacteria of all kinds live in the mouth. Such as catarrhal bacteria, various staphylococci, various streptococci, diphtheria-like bacteria, Klebsiella pneumoniae and Escherichia coli. In addition, there are anaerobic bacteria, such as Peptococcus, Bacteroidetes and yeast-like bacteria.

Influenza is spread through the respiratory tract, and the pharynx is where the virus gathers. Throat swab samples are medical cotton swabs, which are dipped in a small amount of secretions from the pharynx of the human body, and the samples taken are throat swab samples Virus type.