The Effects of Endotracheal Tube and i-gel® Supraglottic Airway Device on Respiratory Impedance: A Prospective Observational Study
| Author | Shoko Nakano | en |
| Author | Junko Nakahira | en |
| Author | Yosuke Kuzukawa | en |
| Author | Toshiyuki Sawai | en |
| Author | Toshiaki Minami | en |
| Orcid | Junko Nakahira [0000-0002-8896-356X] | en |
| Issued Date | 2017-02-28 | en |
| Abstract | Background: The forced oscillation technique (FOT) is a non-invasive means of measuring respiratory resistance and reactance. We tested our hypothesis that endotracheal intubation would cause more substantial preoperative increases in FOT parameters than a supraglottic airway device (SGD). Methods: Forty patients requiring general anesthesia and mechanical ventilation for transurethral bladder tumor resection underwent spirometry the day before surgery. Forced oscillation was measured using a MostGraph-01 device the day before surgery and immediately after removal of the airway adjunct. Changes in respiratory resistance and reactance were compared between those intubated and those who used SGD. Results: The trachea was intubated in 23 patients and SGD was used in the remaining 17 patients. Both airway adjuncts caused significant increases in preoperative respiratory resistance and reactance; however, the magnitude of the changes was significantly greater in the intubated patients. Conclusions: The SGD appears to cause less pulmonary injury than tracheal intubation. Further study is needed to illuminate the influence of mechanical ventilation, and longer-term consequences and clinical significance of the changes we found in this study. Spontaneous ventilation through an SGD may be preferable in patients with severe respiratory disease. | en |
| DOI | https://doi.org/10.5812/aapm.42964 | en |
| Keyword | Forced Oscillation Technique | en |
| Keyword | Respiratory Impedance | en |
| Keyword | Endotracheal Intubation | en |
| Keyword | Supraglottic Airway Device | en |
| Publisher | Brieflands | en |
| Title | The Effects of Endotracheal Tube and i-gel® Supraglottic Airway Device on Respiratory Impedance: A Prospective Observational Study | en |
| Type | Brief Report | en |
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