ETS시 카테터의 길이가 호흡분비물의 세포학적 성분에 미치는 영향

초록

Objective: To examine the effects of the length of the catheter during endotracheal suctioning (ETS) on the quantities of cytologic components in respiratory aspirates of high-risk infants. Methodology: A crossover-experimental study of 22 infants with mean birth weight of 2199.91 gram. Two types of ETS(shallow versus deep) were performed in randomly order, and the quantities of cytologic components, such as the numbers of ciliated columnar cells(CCC), nonciliated CC(NCC), the fresh clustered CC, and Curschmanns spirals(CSP) in suctioned aspirates were compared. Results: There were no statistical differences in the quantities of CCC, NCC, nor CSP between the shallow and the deep ETS. More quantities of the fresh clustered CC were observed in the suctioned aspirates from deep ETS than from shallow ETS(Z = -2.165, p = .030). There were more NCC than CCC in both deep and shallow ETS. Conclusions: ETS and/or the presence of ETT may account for more quanities of NCC rather than deep ETS itself. Deep ETS has no instant and additional effects on the loss of cilia from CC nor the retrieval of CSP. However, deep ETS could contribute to the detachment of the first respiratory epithelium before each of CC losing their own cilia.