비강 면봉과 인후 면봉의 차이점

비강 면봉과 인후 면봉의 차이점

The results of the new coronavirus nucleic acid test are an important reference for the diagnosis and efficacy evaluation of the new coronavirus pneumonia. 핵산 검사 선별 샘플은 대부분 깊은 기침 가래 또는 인후 면봉에서 추출됩니다., 인후 면봉은 비인두 면봉과 ​​구인두 면봉으로 구분됩니다. . 그래서, 둘 사이의 차이점은 무엇입니까?

The pharynx includes the nasopharynx, 구인두, and laryngopharynx. The mucous membranes of the three are continuous and belong to the upper respiratory tract. Nasopharyngeal swabs and oropharyngeal swabs only have different sampling paths. Oral sampling is an oropharyngeal swab, and nasal sampling is a nasopharyngeal swab.

Since the oropharyngeal swab can be operated by opening the mouth, 비교적 간단하다, so it is more commonly used clinically. 하지만, the risk of exposure is higher for those who take the oropharyngeal sample. The operator often needs to face the patient’s mouth. 수집 과정에서, the patient is prone to symptoms such as irritating dry cough and vomiting, exposing the collector to the virus-carrying aerosol.

Nasopharyngeal swabs have several advantages over oropharyngeal swabs. It is possible to stay in the pharynx for a longer period of time during sampling, in order to obtain a sufficient amount of specimens, 이것이 문헌에 보고된 구강인두 면봉 표본의 양성률보다 양성률이 더 높은 이유입니다..

게다가, the patient is well tolerated, usually surface anesthesia and contraction of the nasal mucosa can be performed first, and a skilled sampler can sample the patient without anesthesia.

Since the operator can stand behind the patient when sampling the nasopharynx, the patient pulls down the mask to expose only the nostrils and cover the oral cavity. There is no need to look directly at the patient’s oral cavity, and there is basically no pharyngeal reflex, so the exposure risk is quite lower. Individual patients may have a sneeze reflex after sampling, or they can be immediately covered with elbows or tissues.

인후면봉 채취 핵산검사 검체 채취가 표준화되지 않은 경우, 그것은 발생할 수 있습니다 “거짓 부정” 환자에 대한 결과 및 치료 지연.

그래서, what is the key to the collection of throat swab nucleic acid test specimens? According to Deputy Chief Physician Tian Peng, whether collecting nasopharyngeal swabs or oropharyngeal swabs, the depth of collection and the length of contact with mucous membranes are the key. If the nasopharyngeal swab is not collected deep into the nasopharyngeal cavity, the patient’s vomiting response is too large when the oropharyngeal swab is collected and the sampling time is not enough. 이때, most of the cells collected are virus-free cells. May cause “거짓 부정” 핵산 검사.

Some patients “re-yang” after a negative nucleic acid test is sometimes related to inaccurate sampling.