Hakan Özerol, Emre Şancı, Onur Karakayalı, Erdem Aydın, Hüseyin Cahit Halhallı*

Department of Emergency Medicine, Kocaeli Derince Training and Research Hospital, Kocaeli, Turkey

Keywords: Difficult airway, elastic bougie, intubation technique, selective intubation


BACKGROUND: Selective lung intubation is a life-saving procedure in emergency departments. While various equipment can be used in selective lung intubation, most of this equipment is not readily available; therefore, single-lumen endotracheal intubations are performed for rapid interventions.

MATERIALS AND METHODS: This study was designed as a randomized, prospective, cross-over study using the 90° rotation technique for selective intubation on a manikin model with and without endotracheal tube introducer (ETI) in difficult airway settings. Forty-six emergency physicians were included in the study. The primary outcome was evaluating time to selective intubations, and secondary outcomes were first and second attempt success rates and the self-perceived difficulty level of each method according to the participants.

RESULTS: The mean time to the first successful endotracheal intubation was significantly longer for both right selective and left selective intubations with ETI utilization than without ([39.71 ± 9.83 vs. 21.86 ± 5.94 s], [P < 0.001]), ([42.2 ± 10.81 vs. 26.23 ± 7.97 s], [P < 0.001], respectively). The first-pass success rate did not differ for right selective intubation with or without an ETI (45/46 [97.8%] and 45/46 [97.8%], respectively). However, the first-pass success rate for left selective intubation was significantly higher with ETI as compared to without an ETI (30/46 [65.2%] and 13/46 [28.3%], respectively) (P < 0.001).

CONCLUSIONS: While the success rates of right selective intubation were the same, the left selective intubation success rates with ETI are higher than the styletted endotracheal tube, which can be strong evidence for this method's applicability in practice. Expanding the use of ETI and increasing the experience of the practitioners can contribute to further success.

Ethics Committee Approval

Kocaeli Derince Training and Research Hospital local ethics comittee approved the study (approval date: 12.09.2019, approval no: 2919/81).

Author Contributions

HÖ: Writing-Reviewing, Conceptualization, Data Curation, EŞ: Writing-Reviewing-Editing, Formal Analysis, OK: Methodology, Data Curation, EA: Data Curation, Investigation HCH: Conceptualization, Methodology, Writing-Original draft preparation.
All authors have also revised the material critically for important intellectual content and approved the final version to be submitted.

Conflict of Interest

None Declared.

Financial Disclosure