Abstract
A low-cost video laryngoscope (VDL) called Hybrid 1.0 was developed using smart devices for visualization. To test its performance, we compared it with a high-end VDL device, using both in vitro and in vivo studies. During the in vitro study, medical students without experience in airway intubation were randomly asked to intubate a mannequin with different degrees of difficulty (Cormack–Lehane scales) by using either the Hybrid 1.0 VDL (GI) or a conventional laryngoscope (GII). During the in vivo study, N = 60 endotracheal intubations were performed by resident and base physicians, divided into two groups; the first group intubated with the Hybrid 1.0 VDL (GI) while the second group used a VDL C-Mac shovel (GII). As performance indexes, both studies reported the number of successful intubations (correct capnography signal) and intubation time. For the in vitro testing, no statistically significant differences were found regarding the number of successful intubations, while statistically significant differences were found regarding the intubation times. During the in vivo tests, procedures were performed by residents and by base physicians, and no statistically significant differences were found. The provided results point out that the VDL proposed can be clinically useful and offers technical characteristics similar to other VDLs that currently exist on the market.
Highlights
Nowadays, the worldwide population is going through the coronavirus disease 2019 (COVID-19)pandemic generated by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
These limitations have contributed to the fact that it is still common to use conventional type laryngoscopes (CTLs) with Miller, Macintosh and McCoy type blades, where each one has its own advantage over the previous one: i.e., Miller helps to raise the tongue and assemble the epiglottis for better visualization; Macintosh is a leaf with a parabolic design capable of pulling the epiglottis from the vallecula and is more delicate with the tissues of the larynx; and the McCoy blade is able to bend over itself with an ingenious pulley mechanism that allows an angulation of the tip, improving the elevation of the epiglottis and visual field with a clearer appreciation of the glottis than in previous situations [11,12]
No statistically significant differences were found between groups was very similar (GI) and GII regarding successful intubations (p = 0.215)
Summary
The worldwide population is going through the coronavirus disease 2019 (COVID-19)pandemic generated by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Health professionals, companies and governments from all around the world have faced the fact that any medical equipment that is being used to treat this disease must be technically and clinically accepted and affordable and accessible for any country [1]. In response to this emergency, many companies, universities and non-governmental organizations have developed. There are other blades, they are mainly derived from the first two
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