Masui. The Japanese journal of anesthesiology · 2006
[Preliminary report: observation by video laryngoscope of glottal narrowing due to cricoid pressure].
Аннотация на английскомСтатьяНазвание и аннотация: Перевод в очереди
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Oshima Yoshiaki, Sasaki Akira, Kajitani Harumi, Sasaki Atsuko, Niino Norio, Matsubara Yasuhiro
Аннотация
BACKGROUND: When the applied cricoid pressure is too strong, or the place or direction of the pressure application is not appropriate, glottal closure may occur, but its details are unclear.
METHODS: We evaluated possible changes in the size of the rima glottides due to backward pressure on the cricoid cartilage or backward pressure or backward, upward, and rightward pressure (BURP) on the thyroid cartilage using a video laryngoscope (Fine View' Laryngoscope, Tray Medical, Tokyo) in 6 adult males and 6 females with Cormack and Lehane grade 1.
RESULTS: The right-to-left distance of the rima glottides was 5.1 +/- 1.2 mm without pressure application but was reduced to 3.8 +/- 1.7, 3.5 +/- 1.8, 2.8 +/- 1.9, 2.4 +/- 1.8, and 2.6 +/- 1.2 mm by 20 N and 30 N backward pressure on the cricoid cartilage and 20 N and 30 N backward pressure and BURP on the thyroid cartilage, respectively. Compared with the absence of pressure application, 20 N and 30 N backward pressure and BURP on the thyroid cartilage significantly reduced it. It was reduced to 1 mm by 30 N backward cricoid pressure in 1 patient while glottal closure occurred due to 30 backward thyroid pressure in 1 patient.
CONCLUSIONS: The right-to-left distance of the rima glottides was significantly reduced by backward pressure or BURP on the thyroid cartilage, and was also markedly reduced by cricoid pressure in 1 of the 12 patients.
METHODS: We evaluated possible changes in the size of the rima glottides due to backward pressure on the cricoid cartilage or backward pressure or backward, upward, and rightward pressure (BURP) on the thyroid cartilage using a video laryngoscope (Fine View' Laryngoscope, Tray Medical, Tokyo) in 6 adult males and 6 females with Cormack and Lehane grade 1.
RESULTS: The right-to-left distance of the rima glottides was 5.1 +/- 1.2 mm without pressure application but was reduced to 3.8 +/- 1.7, 3.5 +/- 1.8, 2.8 +/- 1.9, 2.4 +/- 1.8, and 2.6 +/- 1.2 mm by 20 N and 30 N backward pressure on the cricoid cartilage and 20 N and 30 N backward pressure and BURP on the thyroid cartilage, respectively. Compared with the absence of pressure application, 20 N and 30 N backward pressure and BURP on the thyroid cartilage significantly reduced it. It was reduced to 1 mm by 30 N backward cricoid pressure in 1 patient while glottal closure occurred due to 30 backward thyroid pressure in 1 patient.
CONCLUSIONS: The right-to-left distance of the rima glottides was significantly reduced by backward pressure or BURP on the thyroid cartilage, and was also markedly reduced by cricoid pressure in 1 of the 12 patients.