Association between video laryngoscopy characteristics and successful neonatal tracheal intubation: a prospective study

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OBJECTIVE: To identify associations between procedural characteristics and success of neonatal tracheal intubation (NTI) using video laryngoscopy (VL). DESIGN: Prospective single-centre observational study. SETTING: Quaternary neonatal intensive care unit. PATIENTS: Infants requiring NTI at the Children's Hospital of Philadelphia. INTERVENTIONS: VL NTI recordings were evaluated to assess 11 observable procedural characteristics hypothesised to be associated with VL NTI success. These characteristics included measures of procedural time and performance, glottic exposure and position, and laryngoscope blade tip location. MAIN OUTCOME MEASURE: VL NTI attempt success. RESULTS: A total of 109 patients underwent 109 intubation encounters with 164 intubation attempts. The first attempt success rate was 65%, and the overall encounter success rate was 100%. Successful VL NTI attempts were associated with shorter procedural duration (36 s vs 60 s, p<0.001) and improved Cormack-Lehane grade (63% grade I vs 49% grade II, p<0.001) compared with unsuccessful NTIs. Other factors more common in successful NTI attempts than unsuccessful attempts were laryngoscope blade placement to lift the epiglottis (45% vs 29%, p=0.002), fewer tracheal tube manoeuvres (3 vs 8, p<0.001) and a left-sided or non-visualised tongue location (76% vs 56%, p=0.009). CONCLUSION: We identified procedural characteristics visible on the VL screen that are associated with NTI procedural success. Study results may improve how VL is used to teach and perform neonatal intubation.

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