Laryngoscopes
Conditions
Keywords
Visual laryngoscope, Direct laryngoscope, Tracheal intubation time
Brief summary
Macintosh direct laryngoscope has been mostly widely used for anesthesiologists in operation rooms or emergency situations all over the world. With rapidly development of technical devices, nowadays videolaryngoscope has become more and more popular in hospitals, for it could improve first intubation success rate and it is easier for beginners to learn. And there are many different types of videolaryngoscope for different purpose, like with or without a channel, different curvature, and so go. In this study, our aim is to study whether the videolaryngoscope which can be adjustable or not costs less intubation time and causes fewer injury in expected non-difficult airway patients by experienced anesthesiologists, compared with the classic Macintosh direct laryngoscope.
Interventions
All the patients will receive the same anesthesia induction, and are randomized to three groups to receive different types of laryngoscope for intubation. These are the direct Macintosh laryngoscope, adjustable videolaryngoscope and nonadjustable videolaryngoscope.
Sponsors
Study design
Eligibility
Inclusion criteria
* age between18 and 65 years * ASA(American Society of anesthesiologists) I-II * BMI 18-30 kg/m2 * scheduled to receive elective surgery under general anesthesia with expected non-difficult airway in operation rooms.
Exclusion criteria
* expected difficult airway * allergy to anesthesia induction drugs * scheduled to receive surgeries affecting vocalisation * with high reflux aspiration risk * with acute and chronic cardiac or respiratory failure * with glucocorticoids medication history * with mental disorder or transferred to SICU(Surgical Intensive Care Unit) or ICU after surgery who can not cooperate well with others * refused or have participated in other clinical trials that may have effects on the outcomes of this study
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Tracheal intubation time | time from the removal of the patient's face mask for preoxygenation to confirmation of good tube position based on continuous positive end-tidal carbon dioxide reading (at least three breaths without a significant visual decrease in capnography). | total time to successful orotracheal intubation |