sedative-hypnotic drug
Học thuậtThân thiện
Definition
Noun: A sedative-hypnotic drug is a type of central nervous system depressant medication. Its primary functions are to reduce anxiety (sedative effect) and to induce sleep (hypnotic effect). The specific effect often depends on the dosage, with lower doses typically producing calming sedation and higher doses promoting sleep.
Usage
This term is used in medical, pharmacological, and clinical contexts to classify and describe a category of psychoactive drugs. - It is often discussed in relation to treatment plans for insomnia, anxiety disorders, or preoperative care. - The term highlights the drug's dual potential: to sedate (calm) or to cause hypnosis (sleep).
Examples
- General Statement:
- Benzodiazepines are a common class of sedative-hypnotic drug.
- Clinical Context:
- The physician prescribed a short-course sedative-hypnotic drug to manage the patient's acute insomnia.
- Pharmacological Description:
- The new compound is being studied for its potential as a sedative-hypnotic drug with fewer side effects.
Advanced Usage
- The term is often used in contrast to drugs that are purely sedatives (which calm without necessarily causing sleep) or purely hypnotics (which are primarily for sleep induction). A sedative-hypnotic drug encompasses both actions on a spectrum.
- In regulatory and research contexts, the safety profile, potential for dependence, and risk of respiratory depression are critical considerations for this drug class.
Variants and Related Words
- Sedative (noun/adjective): A substance or agent that relieves anxiety and has a calming effect. (e.g., )
- Hypnotic (noun/adjective): A substance or agent that induces sleep. (e.g., )
- Anxiolytic (noun/adjective): A drug that reduces anxiety. Many sedative-hypnotic drugs also have anxiolytic properties.
- Central Nervous System (CNS) Depressant: A broader category of drugs that slow down brain activity, which includes sedative-hypnotics.
Synonyms
- Tranquilizer (though this older term is less specific and can refer to antipsychotics as well as sedatives).
- Sleeping pill (a common term for hypnotic drugs, but it does not fully capture the sedative aspect).
- Calmative (a less common synonym emphasizing the sedative effect).
Related Phrases
- Drug-induced sedation: The state of calmness or drowsiness caused by the drug.
- Hypnotic effect: The sleep-inducing property of the drug.
- Sedative-hypnotic withdrawal: Symptoms that occur upon discontinuation of prolonged use of such drugs.
Notes
- Many drugs in this category, such as benzodiazepines (e.g., diazepam) and "Z-drugs" (e.g., zolpidem), have a high potential for tolerance, dependence, and abuse. Therefore, they are typically recommended for short-term use under medical supervision.
- The effects of a sedative-hypnotic drug can be potentiated by alcohol and other CNS depressants, leading to dangerous levels of respiratory suppression.
Noun
- a sedative that depresses activity of the central nervous system and reduces anxiety and induces sleep