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Observational Study
. 2022 Jan 3;22(1):3.
doi: 10.1186/s12871-021-01541-0.

Preliminary evaluation of SaCoVLM™ video laryngeal mask airway in airway management for general anesthesia

Chun-Ling Yan #  1 , Ying Chen #  1 , Pei Sun  2 , Zong-Yang Qv  1 , Ming-Zhang Zuo  3
Affiliations
Observational Study

Preliminary evaluation of SaCoVLM™ video laryngeal mask airway in airway management for general anesthesia

Chun-Ling Yan et al. BMC Anesthesiol. .

Abstract

Background: To preliminary evaluate the application of SaCoVLM™ video laryngeal mask airway in airway management of general anesthesia.

Methods: We recruited 100 adult patients (ages 18-78 years, male 19, female 81, weight 48-90 kg) with normal predicted airway (Mallampati I ~ II, unrestricted mouth opening, normal head and neck mobility) and ASA I-II who required general anaesthesia. The SaCoVLM™ was inserted after anesthesia induction and connected with the anesthesia machine for ventilation. Our primary outcome was glottic visualization grades. Secondary outcomes included seal pressure, success rate of insertion, intraoperative findings (gastric reflux and contraposition), gastric drainage and 24-h complications after operation.

Results: The laryngeal inlet was exposed in all the patients and shown on the video after SaCoVLM™ insertion. The status of glottic visualization was classified: grade 1 in 55 cases, grade 2 in 23 cases, grade 3 in 14 cases and grade 4 in 8 cases. The first-time success rate of SaCoVLM™ insertion was 95% (95% CI = 0.887 to 0.984), and the total success rate was 96% (95% CI = 0.901 to 0.989). The sealing pressure of SaCoVLM™ was 34.1 ± 6.2 cmH2O and the gastric drainage were smooth. Only a small number of patients developed mild complications after SaCoVLM™ was removed (such as blood stains on SaCoVLM™ and sore throat).

Conclusions: The SaCoVLM™ can visualize partial or whole laryngeal inlets during the surgery, with a high success rate, a high sealing pressure and smooth gastroesophageal drainage. SaCoVLM™ could be a promise new effective supraglottic device to airway management during general anesthesia.

Trial registration: ChiCTR, ChiCTR2000028802 .Registered 4 January 2020.

Keywords: Airway management; General anesthesia; Glottic exposure classification; SaCoVLM™ video laryngeal mask; Sealing pressure.

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Conflict of interest statement

The authors declare that they have no competing interests.

Figures

Fig. 1
Fig. 1
SaCoVLM™ disposable video laryngeal mask
Fig. 2
Fig. 2
SaCoVLM™ Glottic exposure grades. Grade 1: visualization of the lateral part of the right aryepiglottic fold and part of the laryngeal inlet, and the ventilation was good; Grade 2: visualization of the bilateral aryepiglottic fold and part of laryngeal inlet, and the ventilation was good; Grade 3: visualization of all laryngeal inlet and posterior glottis; Grade 4: visualization of the whole glottis
See this image and copyright information in PMC

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