Final answer:
Isoflurane is the inhaled anesthetic that is known to preserve cardiac output, making it a suitable choice for patients where stable hemodynamic conditions are required.
Step-by-step explanation:
The inhaled anesthetic known for preserving cardiac output among the options provided is isoflurane. Isoflurane is less likely to decrease cardiac output compared to other volatile anesthetics. It provides relatively stable hemodynamic conditions during surgery. If all other factors are equal, isoflurane might be preferred for patients with cardiac issues or where preservation of cardiac function is essential.
Nitrous oxide, while also an inhaled anesthetic, is not as potent as the other options and is typically used in combination with other agents. It is not primarily known for its effects on cardiac output. Desflurane and sevoflurane are newer agents and have properties beneficial in various clinical situations, but isoflurane has a more established track record regarding cardiac output preservation.