Pharmacology Nitrous oxide contraindicated on patients with pnumothorax, pneumopericrdium or intestinal obstruction, because it A Depressess an already compromised myocarium B Permits the use of limited FIO2 only C Is less soluble than nitrogen D Causes the expansion of air filled body cavities 💡 Explanation Nitrous oxide contraindicated on patients with pnumothorax, pneumopericrdium or intestinal obstruction, because it ✓ Correct Answer: D. Causes the expansion of air filled body cavities