Randomized comparison of the i-gelT, the LMA Supreme, and the Laryngeal Tube Suction-D using clinical and fibreoptic assessments in elective patients Full Text
BMC Anesthesiology, 08/08/2012
Russo SG et al. – All devices were suitable for ventilating the patients' lungs during elective surgery.Methods
- Prospective, randomized, comparative study of three groups of 40 elective surgical patients each.
- Speed of insertion and success rates, leak pressures (LP) at different cuff pressures, dynamic airway compliance, and signs of postoperative airway morbidity were recorded.
- Fibreoptic evaluation was used to determine the devices' position in situ.
- Leak pressures were similar (i–gel 25.9, LMA–S 27.1, LTS–D 24.0cmH2O; the latter two at 60cmH2O cuff pressure) as were insertion times (i–gel 10, LMA–S 11, LTS–D 14sec).
- LP of the LMA–S was higher than that of the LTS–D at lower cuff pressures (p<0.05).
- Insertion success rates differed significantly: i–gel 95%, LMA–S 95%, LTS–D 70% (p<0.05).
- The fibreoptically assessed position was more frequently suboptimal with the LTS–D but this was not associated with impaired ventilation.
- Dynamic airway compliance was highest with the i–gel and lowest with the LTS–D (p<0.05).
- Airway morbidity was more pronounced with the LTS–D (p<0.01).