Final answer:
Sedatives produce sedation at low doses and sleep at higher doses, while hypnotic drugs induce sleep.
Step-by-step explanation:
The nurse explains the difference between a sedative and hypnotic by stating that most drugs produce sedation at low doses and sleep (the hypnotic effect) at higher doses. Sedatives are drugs that induce a state of relaxation and calmness, while hypnotic drugs specifically induce sleep. Sedatives are generally used for anxiety and insomnia, while hypnotic drugs are used primarily for sleep disorders.