Self-Assembled Modified Macintosh Videolaryngoscope Versus McGrath Macintosh (MAC®) Videolaryngoscope: Which is Better?
- Conditions
- Airway Management
- Interventions
- Device: Endotracheal intubation
- Registration Number
- NCT04850976
- Lead Sponsor
- Indonesia University
- Brief Summary
Videolaryngoscopy highly improves success rate for endotracheal intubation in both normal and difficult airway. However, commercially available videolaryngoscope such as McGrath MAC® can be costly.
The. investigators aim to study a more economical alternative by comparing the intubation time, first attempt success rate, laryngeal visualization, complications, and user satisfaction between our self-assembled modified macintosh videolaryngoscope (SAM-VL) and McGrath MAC® (McGrath).
The study shows that endotracheal intubation using self-assembled modified videolaryngoscope is faster, had more successful first attempts, and allowed better glottis visualization compared with McGrath MAC®. It is a suitable alternative for videolaryngoscope in low resource setting.
- Detailed Description
Background and Aims: Videolaryngoscopy highly improves success rate for endotracheal intubation in both normal and difficult airway. However, commercially available videolaryngoscope such as McGrath MAC® can be costly. The investigators aim to study a more economical alternative by comparing the intubation time, first attempt success rate, laryngeal visualization, complications, and user satisfaction between our self-assembled modified macintosh videolaryngoscope (SAM-VL) and McGrath MAC® (McGrath).
Settings and Design: This was a single-blind randomized clinical trial with 62 adult subjects. The investigators exclude patients with difficult airway, cardiac disease, and neuromuscular disease. The results were calculated using the Statistical Package for Social Scientists (SPSS) 24 Results: Median total intubation time was 63 s (27 - 114 s) in SAM-VL group, compared with 74 s (40 - 133 s), (p = 0,032) in McGrath group. The rate of successful first attempt in SAM-VL group was slightly higher than McGrath group at 90,3% vs 87.1%. Glottic visualization was more satisfactory in SAM-VL group with 67.7% of subjects having score of 100 and 29% of subject having score of 75. Complications found in this study were tachycardia (12.9% SAM-VL group vs 29% in McGrath group) and minimal airway mucosal laceration (9.7% in SAM-VL vs 3.2% in McGrath group). SAM-VL users rate the device high in ease of blade insertion and manoeuvrability, providing good laryngeal visualisation, and overall satisfaction rating.
Conclusions: Endotracheal intubation using self-assembled modified videolaryngoscope is faster, had more successful first attempts, and allowed better glottis visualization compared with McGrath MAC®.
Key-words: endotracheal intubation, self-assembled videolaryngoscope, McGrath MAC®, intubation time, glottis visualization Key Messages: Endotracheal intubation using self-assembled modified videolaryngoscope is faster, had more successful first attempts, and allowed better glottis visualization compared with McGrath MAC®. It is a suitable alternative for videolaryngoscope in low resource setting.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 62
- All adult patients (18-65 years old), American Society of Anesthesiologists (ASA) physical status of I - II, Body Mass Index (BMI) of 18 - 30 kg/m2, scheduled for elective surgical procedures under general anesthesia
- ASA III or above, difficult airway, pregnancy, cardiac condition, neuromuscular disease
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description McGrath MAC® videolaryngoscope (McGrath) group Endotracheal intubation The McGrath MAC® videolaryngoscope used in this study was equipped with disposable blade no.4 Self-Assembled Modified Macintosh Videolaryngoscope (SAM-VL) group Endotracheal intubation The self-assembled modified Macintosh videolaryngoscope (SAM-VL) used in this study was constructed from a portable video camera with Wi-fi connection (Wi-fi Endoscope Video Camera model YPC99) attached to a no. 4 Macintosh Laryngoscope blade (Riester® no.7040). The video signal is transmitted to an Android-based mobile phone (Android version 7.0). The portable 2 megapixels video camera is 8 mm in diameter with 8 Light Emitting Diode (LED) lights for adjustable lighting level and 3 meters cable length. Video resolution output is 640x480 pixels (VGA) and 1280x720 pixels (HD). The camera has 70º visual angle with focus length of 4- 6cm and is water-resistant. The camera was taped to the Macintosh blade at a distance of 5 cm from the distal end of the blade, using transparent waterproof Leukofix® tape.
- Primary Outcome Measures
Name Time Method Time needed for Intubation "A" After endotracheal intubation completed The time needed for Intubation "A" recording began when the tip of the laryngoscope blade passed through the incisors until the operator was able to achieve best visualization of the glottis. Measured in seconds (s).
Time needed for Intubation "B" After the endotracheal intubation completed The time needed for Intubation"B" recording began when the operator received visualization of the glottis and ended after the endotracheal tube tube was confirmed to enter the trachea. Measured in seconds (s).
Total time needed for intubation After the endotracheal intubation completed The sum total of time needed for Intubation A+B. Measured in seconds (s).
- Secondary Outcome Measures
Name Time Method Successful first attempt After the endotracheal intubation completed Measuring intubation's first attempt success rate between the two groups. Success rate defined in number (%).
Laryngeal visualization After the endotracheal intubation completed Measuring laryngeal visualization using Percentage of Glottic Opening (POGO) score: 100,75, 50, 25, 0.
Complications After the endotracheal intubation completed Documenting complications generated by each device. Complications recorded are: Hypertension, hypotension, tachycardia, bradycardia, mucosal laceration, and esophageal intubation. Incidence are presented in numbers (%).
Laryngoscope User Satisfaction After the endotracheal intubation completed Documenting laryngoscope user satisfaction in terms of blade insertion (very easy, easy, reasonable, difficult), device maneuverability (very easy, easy, reasonable, difficult), glottic visualization (very good, good, enough, poor), and overall satisfaction rating (very good, good, enough, poor).
Trial Locations
- Locations (1)
University of Indonesia and Cipto Mangunkusumo Hospital
🇮🇩Jakarta Pusat, DKI Jakarta, Indonesia