Nitrous Oxide - MCI
Nitrous Oxide - MCI
Nitrous Oxide - MCI
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Problems with <strong>Nitrous</strong> <strong>Oxide</strong><br />
Expansion of Air Spaces<br />
• N2O solubility 34x nitrogen<br />
• Diffuses rapidly into closed air space<br />
• If compliant<br />
– Volume expansion<br />
• Air embolus, pneumothorax, distended bowel<br />
• Can occur rapidly x2 size in 10 minutes<br />
• Non compliant<br />
– Pressure<br />
• Sinuses, middle ear, intracranial, viteoretinal surgery – blindness<br />
secondary to retinal artery occlusion
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