by Toshiyuki Nakanishi, Ayaka Tani, Kei Matsumoto, Atsushi Ishikawa, Yuki Takami, Yuji Kamimura, Rina Kato, MinHye So, Kazuya Sobue Background The i-gel® Plus, a new supraglottic airway, has a high oropharyngeal leak pressure of 32 ± 7 cmH 2 O in the European population. Because the i-gel® series was developed based on the laryngeal anatomy in Western populations, its performance in other regions, such as East Asia, is unknown.
Therefore, we aimed to perform an initial clinical evaluation of i-gel® Plus in Japanese patients. Methods This prospective observational study, conducted from March to June 2024 at a university hospital in Japan, recruited a total of 64 adult patients, 16 each of nonelderly (18–69 years) male, nonelderly female, elderly (≥ 70 years) male, and elderly female patients.
Patients with a suspected high risk of aspiration or a predicted difficult airway were excluded. We recorded the oropharyngeal leak pressure (primary outcome), first-attempt success rate, and fiberoptic views of the i-gel® Plus.
Continuous variables were evaluated for normality using the Shapiro–Wilk test and Q-Q plot.
PLOS ONE (Medicine) published a clinical update in Research Highlights on 07 May 2026.
The item focuses on Clinical evaluation of the i-gel Plus supraglottic airway in Japanese patients: A prospective observational study.
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