Schebesta, K. and Lorenz, V. and Schebesta, E. M. and Hoerauf, K. and Gruber, M. and Kimberger, O. and Chiari, A. and Frass, M. and Krafft, P. (2010) Exposure to anaesthetic trace gases during general anaesthesia: CobraPLA vs. LMA classic. ACTA ANAESTHESIOLOGICA SCANDINAVICA, 54 (7). pp. 848-854. ISSN 0001-5172, 1399-6576
Full text not available from this repository. (Request a copy)Abstract
Background To prospectively investigate the performance, sealing capacity and operating room (OR) staff exposure to waste anaesthetic gases during the use of the Cobra perilaryngeal airway (CobraPLA) compared with the laryngeal mask airway classic (LMA). Methods Sixty patients were randomly assigned to the CobraPLA or the LMA group. Insertion time, number of insertion attempts and airway leak pressures were assessed after induction of anaesthesia. Occupational exposure to nitrous oxide (N2O) and Sevoflurane (SEV) was measured at the anaesthetists' breathing zone and the patients' mouth using a photoacoustic infrared spectrometer. Results N2O waste gas concentrations differed significantly in the anaesthetist's breathing zone (11.7 +/- 7.2 p.p.m. in CobraPLA vs. 4.1 +/- 4.3 p.p.m. in LMA, P=0.03), whereas no difference could be shown in SEV concentrations. Correct CobraPLA positioning was possible in 28 out of 30 patients (more than one attempt necessary in five patients). Correct positioning of the LMA classic was possible in all 30 patients (more than one attempt in three patients). Peak airway pressure was higher in the CobraPLA group (16 +/- 3 vs. 14 +/- 2 cmH(2)O, P=0.01). The average leak pressure of the CobraPLA was 24 +/- 4 cmH(2)O, compared with 20 +/- 4 cmH(2)O of the LMA classic (P < 0.001; all values means +/- SD). Conclusion Despite higher airway seal pressures, the CobraPLA caused higher intraoperative N2O trace concentrations in the anaesthetists' breathing zone.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | LARYNGEAL MASK AIRWAY; OPERATING-ROOM PERSONNEL; SISTER-CHROMATID EXCHANGES; DIFFICULT TRACHEAL INTUBATION; OROPHARYNGEAL LEAK PRESSURE; NITROUS-OXIDE; OCCUPATIONAL-EXPOSURE; PERILARYNGEAL AIRWAY; NURSE ANESTHETISTS; MULTIPLE-SCLEROSIS; |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Anästhesiologie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 15 Jul 2020 09:49 |
| Last Modified: | 15 Jul 2020 09:49 |
| URI: | https://pred.uni-regensburg.de/id/eprint/24324 |
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