Health  Vol.10 No.6 , June 2018
Angle Effect to Dropping of Dew in Closed Suction Catheters
Abstract: Intratracheal aspiration in a patient on ventilation is generally performed using a catheter. Of late, closed suction systems have been used more frequently than open systems. To remove tracheal secretions through the intratracheal tube, catheter suction is used, and the suction catheter may be of the closed- or open-type. The catheters are cleaned by flushing with sterile 0.9% saline, resulting in dropping of dew. This phenomenon is caused by some factors: influence of flow, clogging of the suction tube, problem of manipulation of flushing and angle between the intubation tube and the connection port. But this dropping has not yet been investigated. In this study, we focused at this angle and we used the test lung which is simulated machine on behalf of patient. We consider two situations adult and child, also two types of catheters Eco-Cath and Ty-care. In child case we consider elbow-type suction catheters and Y-connector type. The angle was set at 0°, 20°, 40°, 60°, and 90°, and we observed the difference between Eco-Cath and Ty-care. In adults difference is significant (p 0.001), In 90° between Tracheal intubation and Tracheotomy (p ≈ 0.26). In child difference is significant (p 0.001), In 90° between Tracheal intubation and Tracheotomy (p ≈ 0.15). In child case we observed dependency of angle on various conditions too. The relation of the angle and dew was clarified.
Cite this paper: Doi, K. , Doi, M. , Yaegashi, Y. , Imoto, K. , Ando, M. and Kadota, J. (2018) Angle Effect to Dropping of Dew in Closed Suction Catheters. Health, 10, 719-729. doi: 10.4236/health.2018.106055.

[1]   Ministry of Health, Labour and Welfare of Japan Website (2017). (In Japanese)

[2]   Japanese Society of Respiratory Care Medicine Website (2017). (In Japanese)

[3]   Japan Council for Quality Health Care Website (2017). (In Japanese)

[4]   Shizuoka Hospital Association Website (2017). (In Japanese)

[5]   Michimata, Y. (2014) Shin Jinkou Kokyuu Kea No Subete Ga Wakaru Hon. [A Book That Shows All about Artificial Respiration.] Shorinsha, Japan.

[6]   Corley, A., Sharpe, N., Caruana, L.R., Spooner, A.J. and Fraser, J.F. (2014) Lung Volume Changes during Cleaning of Closed Endotracheal Suction Catheters: A Randomized Crossover Study Using Electrical Impedance Tomography. Respiratory Care, 59, 497-503.

[7]   Cereda, M., Villa, F., Colombo, E., Greco, G., Nacoti, M. and Pesenti, A. (2001) Closed System Endotracheal Suctioning Maintains Lung Volume during Volume-Controlled Mechanical Ventilation. Intensive Care Medicine, 27, 648-654.

[8]   Guideline, A.C.P. (1999) Suctioning of the Patient in the Home. Respiratory Care, 44, 99-104.

[9]   Tablan, O.C., Anderson, L.J., Besser, R., Bridges, C., Hajjeh, R. and CDC, Healthcare Infection Control Practices Advisory Committee (2004) Guidelines for preventing Health-Care—Associated Pneumonia, 2003: Recommendations of CDC and the Healthcare Infection Control Practices Advisory Committee. MMWR Recommendations and Reports, 53, 1-36.

[10]   Michimata, Y., Kozu, R. and Kotani, T. (2009) Jinkou Kokyuu Kanri Jissen Gaido. [Practice Guide for Artificial Respiration Management.] Shorinsha, Japan.

[11]   Guyatt, G.H., Oxman, A.D., Vist, G.E., Kunz, R., Falck-Ytter, Y., Alonso-Coello, P., et al. (2008) GRADE: An Emerging Consensus on Rating Quality of Evidence and Strength of Recommendations. BMJ, 336, 924-926.

[12]   Celik, S.S. and Elbas, N.O. (2000) The Standard of Suction for Patients Undergoing Endotracheal Intubation. Intensive and Critical Care Nursing, 16, 191-198.

[13]   Banner, M.J., Blanch, P.B. and Kirby, R.R. (1993) Imposed Work of Breathing and Methods of Triggering a Demand-Flow, Continuous Positive Airway Pressure System. Critical Care Medicine, 21, 183-190.