scholarly journals Intubation using laryngeal mask airway CTrach and laryngeal mask airway Fastrach in anesthetized non-paralyzed patients: a randomized controlled study

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Ola T. Abdel Dayem ◽  
Tamer M. Farahat
Keyword(s):  
Laryngeal Mask Airway ◽  
Laryngeal Mask ◽  
Randomized Controlled Study ◽  
Controlled Study ◽  
Randomized Controlled

scholarly journals Hyomental distance measured by ultrasound for size selection of laryngeal mask airway in female patients: a randomized controlled study

2021 ◽  
Author(s):  
xia wang ◽  
Zhi-Hang Tang ◽  
wuhua ma
Keyword(s):  
Laryngeal Mask Airway ◽  
Laryngeal Mask ◽  
Randomized Controlled Study ◽  
Controlled Study ◽  
Weight Group ◽  
Female Patients ◽  
Size Selection ◽  
Randomized Controlled ◽  
Classic Laryngeal Mask Airway ◽  
Selection Of

Abstract BackgroundOptimal size selection of classic laryngeal mask airway (LMA) remains a major challenge for anaesthesiologists. Because the body weight, current method to select LMA size, might not inconsistent with dimension of hypopharynx where LMA is positioned. Hyomental distance by ultrasound as an common parameter in upper airway may be considered a predictor of LMA size choice, that we conducted a randomized, controlled study to compare the efficacy of size selection between commonly recommended weight-based method and hyomental distance-based method.MethodsSeventy female patients undergoing breast cancer surgery were enrolled in our study and randomly assigned into either the hyomental distance group or weight group. The primary outcome was the correct rate of selection LMA without need for size adjustment or use of other devices. Secondary outcomes included injury rate, oropharyngeal leak pressure (OLP), and insertion attempts.ResultsTwo participants were excluded from weight group due to tracheal intubation. The correct rate of LMA size-selected were significant difference of 77.14% and 51.51% in hyomental distance group and weight group, respectively(P=0.027). Five (14.29%) and 7 (21.21%) patients were injured in hyomental-distance group and weight group, respectively. Values of OLP in two groups were 22 (19-24) cmH2O and 22 (19.5-24) cmH2O, respectively. The insertion attempts were the same in both groups and no statistical differences were observed regarding these three outcomes. ConclusionThe hyomental distance-based method possessed a higher success rate for LMA-classic size selection than did the weight-based method, with the same excellent OLP value, low possibility of injury, and a low number of insertion attempts as weight-based method. Trial registrationOur study was registered with the Chinese Clinical Trial Registry (ChiCTR1900021123), registered 29 January 2019.

Surfactant Administration through Laryngeal Mask Airway: A Randomized Controlled Study in Rabbits

2017 ◽  
Vol 35 (07) ◽  
pp. 669-675
Author(s):  
Gonzalo Mariani ◽  
María Virasoro ◽  
Sebastián Burgos ◽  
María Labanca ◽  
Pablo Otero ◽  
...  
Keyword(s):  
Laryngeal Mask Airway ◽  
Minimally Invasive ◽  
Respiratory Distress ◽  
Feeding Tube ◽  
Laryngeal Mask ◽  
Controlled Study ◽  
Positive Pressure ◽  
Invasive Approach ◽  
Randomized Controlled ◽  
Surfactant Administration

Background Minimally invasive techniques for surfactant administration for infants with respiratory distress syndrome (RDS) of moderate severity have been proposed. The laryngeal mask airway (LMA) helps in securing the airway without the need of laryngoscopy, but still requires the use of positive pressure ventilation (PPV) to flush surfactant into the lungs. Objective This article compares the effectiveness of two techniques for LMA surfactant administration, instillation into the LMA lumen followed by PPV versus direct laryngeal instillation through a preinserted feeding tube inside the LMA during spontaneous respirations. Study Design This is a randomized controlled trial (RCT) of 18 rabbits with acquired respiratory distress after lung lavage. After surfactant was given, the rabbits remained on continuous positive airway pressure (CPAP). Gas exchange parameters were assessed at baseline and at 30 minutes and lung parenchyma pathology features were analyzed. Results Time required for surfactant administration, oxygenation improvement, and histopathologic findings did not differ between groups. The new technique decreased the need of PPV (p < 0.05). Conclusion In this animal model, surfactant administration through a preinserted feeding tube within the LMA lumen is safe and effective while providing the benefits of a minimally invasive approach. This technique reduces the need of PPV and may prevent its potential risks.

Sign in / Sign up

Export Citation Format

Share Document