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Randomized Controlled Trial
. 2022 Sep 6;22(1):281.
doi: 10.1186/s12871-022-01816-0.

Comparative study of a modified double-lumen tube ventilation control connector and traditional connector in clinical use: a randomised-controlled trial

Chang Liu  1 , Yuanyu Zhao  1 , You Li  1 , Huiwen Guan  1 , Junjie Feng  1 , Shengquan Cheng  1 , Xin Wang  1 , Yue Wang  1 , Xufang Sun  2
Affiliations
Randomized Controlled Trial

Comparative study of a modified double-lumen tube ventilation control connector and traditional connector in clinical use: a randomised-controlled trial

Chang Liu et al. BMC Anesthesiol. .

Abstract

Background: A Y-shaped rotatable connector (YRC) for double-lumen tubes (DLT) is invented and compared with the traditional connector (Y-shaped connector, YC).

Methods: Sixty patients with ASA grade I-III, aged ≥ 18 years, who needed to insert a DLT for thoracic surgery were recruited and assigned into the YRC group (n = 30) and the YC group (n = 30) randomly. The primary endpoints included the inhaled air concentration (Fi) and the exhaled air concentration (Et) of sevoflurane before and after the switch between two-lung ventilation and one-lung ventilation at different times, positioning time, and switching time. The secondary endpoints were the internal gas volume of the two connectors, airway pressure, and the sputum suction time.

Results: The Et and Fi of the YRC group and the YC group were significantly different (all p < 0.05) at 5s, 10s, and 30s after the patient switched from two-lung ventilation to one-lung ventilation. The positioning time of the YRC group was less than YC group (89.75 ± 14.28 s vs 107.80 ± 14.96 s, p < 0.05), as well as the switching time (3.60 ± 1.20 s vs 9.05 ± 2.53 s, p < 0.05) and the internal gas volume (17.20 ml vs 24.12 ml). There was no difference in airway pressure and the sputum suction time in two groups.

Conclusion: Compared with YC, YRC was beneficial for maintaining depth of anesthesia, improves efficiency for the switch between one-lung and two-lung ventilation, and shortens the tube positioning time.

Keywords: Bronchial intubation; One-lung ventilation; Two-lung ventilation; double-lumen tube connector.

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Conflict of interest statement

The authors declare that they have no competing interests.

Figures

Fig. 1
Fig. 1
The Y-shaped rotatable connector (YRC, A) and the traditional Y-shaped connector (YC, B)
Fig. 2
Fig. 2
The YRC used for two-lung ventilation (A) and one-lung ventilation (B and C)
Fig. 3
Fig. 3
The clinical application of YRC (A) and YC (B)
Fig. 4
Fig. 4
The inspired (Fi) and expired (Et) sevoflurane concentration during two-lung and one-lung ventilation in two groups. * Compared with the YC group, P < 0.05. TLV: two-lung ventilation, OLV: one-lung ventilation
Fig. 5
Fig. 5
The inspired (Fi) and expired (Et) sevoflurane concentration during one-lung ventilation in two groups
See this image and copyright information in PMC

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References

    1. Cohen E. Recommendations for airway control and difficult airway management in thoracic anesthesia and lung separation procedures. Are we ready for the challenge? Minerva Anestesiol. 2009;75:3–5. - PubMed
    1. Roberts JD. Anesthesia for lung transplantation. Cardiac Anesthesia: A Problem Based Learning Approach. 2019. p. 322.
    1. Bernasconi F, Piccioni F. One-lung ventilation for thoracic surgery: current perspectives. Tumori J. 2017;103(6):495–503. doi: 10.5301/tj.5000638. - DOI - PubMed
    1. Jung DM, Ahn HJ, Jung S-H, Yang M, Kim JA, Shin SM, Jeon S. Apneic oxygen insufflation decreases the incidence of hypoxemia during one-lung ventilation in open and thoracoscopic pulmonary lobectomy: a randomized controlled trial. J Thorac Cardiovasc Surg. 2017;154(1):360–366. doi: 10.1016/j.jtcvs.2017.02.054. - DOI - PubMed
    1. Hannallah MS, Benumof JL, McCarthy PO, Liang M. Comparison of three techniques to inflate the bronchial cuff of left polyvinylchloride double-lumen tubes. Anesth Analg. 1993;77(5):990–994. doi: 10.1213/00000539-199311000-00020. - DOI - PubMed

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