2. You get to the lab and find out that the sevoflurane bottle is empty, but there is a full bottle of isoflurane. You use it instead of sevoflurane. How much isoflurane do you inject?
Answer: Roughly the same amount as sevoflurane (0.5 ml).
All of the volatile anesthetics that we use clinically have roughly the similar densities and molecular weights. Therefore each liquid ml of the different agents produces roughly the same amount of vapor.
| Agent | Density | Molecular Weight | ml of vaper per liq. ml |
| Sevoflurane | 1.52 | 200 | 170 |
| Desflurane | 1.45 | 168 | 193 |
| Isoflurane | 1.49 | 185 | 180 |
| Halothane | 1.86 | 197 | 210 |
| Enflurane | 1.52 | 185 | 184 |
| Mehoxyflurane | 1.42 | 165 | 192 |
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