Comparison of one-handed face mask ventilation techniques on the simulation model: EO technique and EC technique

Purpose To compare the efficacy of two one-handed face mask ventilation techniques. Secondarily, we also assessed the effect of hand size on the performance of both these techniques. Methods Eighty subjects were randomized into the EO group and the EC group. After receiving face mask ventilation training, they carried out one-handed mask ventilation on a simulation model according to the order of EO technique-EC technique or EC technique-EO technique, and they performed each face mask ventilation technique for five consecutive ventilations. The primary outcomes were the time of the first chest undulation and the total number of chest undulations in the five operations. A questionnaire evaluated the subjects' feelings of simplicity and comfort regarding the two techniques. Results Compared with the EC technique, the first success time was significantly shorter with the EO technique (17.69 +/- 11.32 seconds vs 8.39 +/- 8.08 seconds, P < 0.001), and the EO technique produced an improved successful ventilation rate (50.00% +/- 33.89% vs 77.00% +/- 28.84%, P < 0.001). For the EC technique, the first success time and successful ventilation rate of male subjects were better than those of female subjects (P < 0.05), whereas the first success time and successful ventilation rate in males and females did not significantly differ from each other for the EO technique (P > 0.5). Most subjects reported that the EO technique was simpler and more comfortable than the EC technique. Conclusion On the simulation model, compared to the one-handed EC face mask ventilation technique, the EO technique is more conducive to the learning and mastery of novices and small-handed operators. Key messages What is already known on this topic? In the literature, the most described and well-known one-handed mask ventilation method is the EC technique, but in clinical work and literature research, it has been found that novices struggle to adapt to the EC technique. A few studies have suggested that the EO technique may be more suitable for novices than the EC technique. What this study adds? This study assessed two one-handed mask ventilation techniques and examined the influence of hand size on ventilation efficacy on the simulation model. On this basis, our research complements prior findings that the EO technique is more suitable for operators with smaller palms than the EC technique. How this study might affect research, practice, or police? Our study outlines an alternative one-handed ventilation technique that can improve ventilation efficiency for novices and operators with small hands in clinical work, providing guidance for mask ventilation education.